联想 ThinkPad L15 Gen 4 评测:省电、静音的 Ryzen 笔记本电脑
ThinkPad L 系列以合理的价格提供入门级和中端商务笔记本。这款 15.6 英寸笔记本最便宜的型号约为 900 美元。联想同时销售采用 AMD 和英特尔内核的机型,而这款机型采用的是 AMD 内核。 ThinkPad L14 Gen 4是我们刚刚评估过的一款 14 英寸机型。
宏碁 Aspire Vero AV15-53P、申克 VIA 15 Pro M22, 惠普 ProBook 445 G10, 富士通 LifeBook E5412A和 戴尔Latitude 3440都是竞争对手。后三款笔记本电脑各自的 15.6 英寸姊妹版更具有这种相似性。
潜在的竞争对手比较
Rating | Date | Model | Weight | Height | Size | Resolution | Best Price |
---|---|---|---|---|---|---|---|
86.6 % | 12/2023 | Lenovo ThinkPad L15 Gen 4 21H70021GE R7 PRO 7730U, Vega 8 | 1.9 kg | 19.93 mm | 15.60" | 1920x1080 | |
87.6 % | 11/2023 | Acer Aspire Vero AV15-53P i7-1355U, Iris Xe G7 96EUs | 1.8 kg | 17.78 mm | 15.60" | 1920x1080 | |
87.1 % | 06/2023 | SCHENKER VIA 15 Pro M22 R7 5700U, Vega 8 | 1.4 kg | 16.8 mm | 15.60" | 2560x1440 | |
84.6 % | 10/2023 | HP ProBook 445 G10 R5 7530U, Vega 7 | 1.3 kg | 20 mm | 14.00" | 1920x1080 | |
82.1 % | 06/2023 | Fujitsu LifeBook E5412A E542AMHAAMDE R5 PRO 5675U, Vega 7 | 1.4 kg | 19.9 mm | 14.00" | 1920x1080 | |
85.3 % | 06/2023 | Dell Latitude 3440 i5-1345U, Iris Xe G7 80EUs | 1.5 kg | 19.4 mm | 14.00" | 1920x1080 |
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外壳 - L15 的技术封装在塑料外壳中
该机箱采用黑色塑料制成,设计简洁实用。更高级的 ThinkPad 系列才采用更精致的外壳材料。机盖背面和掌托上都醒目地印有标志性的 "ThinkPad "字样,表面光滑哑光。值得注意的是,该机没有维护挡板;不过,取下底部外壳后,可以接触到电池(用螺丝固定,而非胶粘)和其他内部元件。
该设备在加工方面没有明显缺陷,缝隙尺寸正确。虽然底座的扭转幅度稍大,但还是希望能有更高的刚性。盖子保持在合理的范围内。向盖子背面施压不会导致图像变化,紧固的铰链能牢牢地将盖子固定在位置上。最大开启角度为 180 度,可单手开启。
在同类产品中,ThinkPad 是最重的笔记本电脑,重约 4.188 磅。就尺寸而言,测试中的 15.6 英寸设备并无太多相似之处。当然,14 英寸的竞争对手要小巧和轻便得多。
连接性 - ThinkPad 没有配备 Thunderbolt
该笔记本配备了两个 USB-A 端口(USB 3.2 Gen 1)和两个 USB-C 端口(USB 3.2 Gen 2)。值得注意的是,USB-C 端口支持 Power Delivery 和 DisplayPort 功能。结合 HDMI 插槽,该笔记本电脑拥有多达三个视频输出端口。此外,它还配备了一个组合音频插座、千兆以太网和一个可选的智能卡读卡器,使其连接选项更加完善。
SD 读卡器
使用 AV Pro SD microSD 128 GB V60 参考卡测试的 microSD 存储卡读卡器属于中等速度型号。它在传输 250 个 JPG 图像文件(每个文件大小为 5 MB)时的传输速率为 55.9 MB/s,在复制大数据块时的传输速率为 88.9 MB/s。
SD Card Reader | |
average JPG Copy Test (av. of 3 runs) | |
Fujitsu LifeBook E5412A E542AMHAAMDE (AV Pro V60) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Average of class Office (8 - 82.7, n=50, last 2 years) | |
SCHENKER VIA 15 Pro M22 (Angelbird AV Pro V60) | |
maximum AS SSD Seq Read Test (1GB) | |
Fujitsu LifeBook E5412A E542AMHAAMDE (AV Pro V60) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Average of class Office (25 - 90.5, n=44, last 2 years) | |
SCHENKER VIA 15 Pro M22 (Angelbird AV Pro V60) |
交流
在最佳条件下,例如附近没有 WiFi 设备,笔记本电脑和服务器 PC 之间的距离很短,就能实现非常好的 WiFi 数据传输速率。L15 配备了 WiFi 6E 芯片(联发科 MT7922)。在有线连接方面,它采用了 Realtek 的控制器(RTL8168/8111;1 GBit/s)。
除 WiFi 外,由于配备了相应的调制解调器(Quectel EM05-G;CAT 4,最大下载速率 150 MBit/s,上传速率 50 MBit/s),还可通过 LTE 网络建立无线连接。SIM 卡读卡器(nano-SIM)位于笔记本电脑背面,还支持 eSIM 卡
网络摄像头
在质量方面,网络摄像头(210 万像素 + 红外,最大像素 1,920 x 1,080)的表现符合标准。不过,色彩偏差约为 12(目标值为 DeltaE < 3),略高于预期。值得肯定的是,该摄像头配有一个机械盖,增强了隐私性和安全性。
安全
该笔记本电脑通过指纹识别、Windows Hello 或智能卡身份验证提供访问安全性。此外,它还配备了可信平台模块(2.0),可增强安全性。在物理安全方面,该设备可使用电缆锁进行保护。
配件
除了标准文件(保修信息、快速入门海报)外,TP 不包括其他附件。
维护
拧松下面的螺丝后,可以用扁平刮刀取下底板。这样就可以接触到各种组件,包括固态硬盘(PCIe 3 插槽中的 PCIe 4 固态硬盘,M.2-2242)、WLAN 模块、LTE 调制解调器、内存库、电池、扬声器、风扇和 BIOS 电池。
保修
联想为 ThinkPad 在美国境内提供为期一年的保修服务。
输入设备 - 键盘的稳定性有待提高
键盘
联想为 ThinkPad 配备了背光(两级)chiclet 键盘,其中包括数字键盘。光滑的凹面按键键程短而清晰。虽然按键阻力尚可接受,但有些用户可能更喜欢清脆的手感。值得注意的是,键盘在键入时会有轻微的反弹。一个不便之处是 FN 键和左 CTRL 键的位置对调,需要用户调整练习手部动作。尽管如此,联想还是提供了一个非常出色的键盘,非常适合日常使用。
触摸板
点击垫的尺寸约为 4.52 x 2.20 英寸,是鼠标的主要替代品,具有较短的行程和清晰的压力点。轨迹点也可用于更精确地控制鼠标指针。与之配套的三个运行流畅的鼠标按键提供了一个清晰的压力点。
显示屏 - FHD 面板,色彩空间覆盖率低
联想为 ThinkPad L15 G4 配备了 16:9 格式的 15.6 英寸哑光、视角稳定的显示屏(1920 x 1080 像素)。值得注意的是,显示屏没有 PWM 闪烁,对比度也相当高。亮度略低于目标值(大于 300 cd/m²)。此外,ThinkPad 还提供亮度稍高的全高清触摸屏。没有其他显示屏可供选择。
|
Brightness Distribution: 84 %
Center on Battery: 275 cd/m²
Contrast: 1719:1 (Black: 0.16 cd/m²)
ΔE Color 6.2 | 0.5-29.43 Ø5, calibrated: 4.2
ΔE Greyscale 4.1 | 0.57-98 Ø5.3
43.2% AdobeRGB 1998 (Argyll 2.2.0 3D)
62.5% sRGB (Argyll 2.2.0 3D)
41.8% Display P3 (Argyll 2.2.0 3D)
Gamma: 1.91
Lenovo ThinkPad L15 Gen 4 21H70021GE N156HCA-E5B, IPS, 1920x1080, 15.60 | Acer Aspire Vero AV15-53P AUO B156HAN09.0, IPS, 1920x1080, 15.60 | SCHENKER VIA 15 Pro M22 NE156QHM-NY2, IPS, 2560x1440, 15.60 | HP ProBook 445 G10 AUO2FA6, IPS, 1920x1080, 14.00 | Fujitsu LifeBook E5412A E542AMHAAMDE LP140WFH-SPD1, IPS, 1920x1080, 14.00 | Dell Latitude 3440 BOE NE140FH, IPS, 1920x1080, 14.00 | |
---|---|---|---|---|---|---|
Display | 58% | 58% | 60% | -10% | -3% | |
Display P3 Coverage | 41.8 | 66.67 59% | 67.5 61% | 68.4 64% | 37.5 -10% | 40.4 -3% |
sRGB Coverage | 62.5 | 97.48 56% | 97.1 55% | 95.2 52% | 56.1 -10% | 60.7 -3% |
AdobeRGB 1998 Coverage | 43.2 | 68.14 58% | 68.5 59% | 70.6 63% | 38.8 -10% | 41.8 -3% |
Response Times | -20% | 47% | -65% | -37% | -48% | |
Response Time Grey 50% / Grey 80% * | 24.4 ? | 25 ? -2% | 13.8 ? 43% | 53.4 ? -119% | 35 ? -43% | 35.3 ? -45% |
Response Time Black / White * | 19.7 ? | 27 ? -37% | 9.8 ? 50% | 21.8 ? -11% | 25.6 ? -30% | 29.8 ? -51% |
PWM Frequency | 60 ? | |||||
Screen | 8% | 7% | 36% | -30% | 11% | |
Brightness middle | 275 | 411.5 50% | 354 29% | 501 82% | 231 -16% | 292.6 6% |
Brightness | 252 | 372 48% | 331 31% | 464 84% | 228 -10% | 270 7% |
Brightness Distribution | 84 | 84 0% | 80 -5% | 87 4% | 77 -8% | 88 5% |
Black Level * | 0.16 | 0.52 -225% | 0.41 -156% | 0.26 -63% | 0.31 -94% | 0.19 -19% |
Contrast | 1719 | 791 -54% | 863 -50% | 1927 12% | 745 -57% | 1540 -10% |
Colorchecker dE 2000 * | 6.2 | 3.07 50% | 2.4 61% | 2.64 57% | 7.2 -16% | 4.63 25% |
Colorchecker dE 2000 max. * | 19.2 | 4.95 74% | 6.4 67% | 5.06 74% | 20.8 -8% | 17.1 11% |
Colorchecker dE 2000 calibrated * | 4.2 | 1.03 75% | 1.4 67% | 1.57 63% | 5.5 -31% | 2.13 49% |
Greyscale dE 2000 * | 4.1 | 1.74 58% | 3.2 22% | 3.8 7% | 5.3 -29% | 3.2 22% |
Gamma | 1.91 115% | 2.238 98% | 2.08 106% | 2.103 105% | 2.16 102% | 2.34 94% |
CCT | 6352 102% | 6611 98% | 6786 96% | 6562 99% | 6407 101% | 7184 90% |
Total Average (Program / Settings) | 15% /
15% | 37% /
24% | 10% /
26% | -26% /
-27% | -13% /
-1% |
* ... smaller is better
显示器开箱即可显示可接受的色彩,但偏差约为 6.2,未达到目标(DeltaE < 3)。
该面板无法再现 AdobeRGB(43%)、sRGB(63%)和 DCI-P3 (42%)色彩空间。因此,它可能不适合对色彩保真度要求较高的应用场景,因为一些竞争对手在这方面提供了更好的性能。
Display Response Times
↔ Response Time Black to White | ||
---|---|---|
19.7 ms ... rise ↗ and fall ↘ combined | ↗ 10.7 ms rise | |
↘ 9 ms fall | ||
The screen shows good response rates in our tests, but may be too slow for competitive gamers. In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 37 % of all devices are better. This means that the measured response time is similar to the average of all tested devices (21.5 ms). | ||
↔ Response Time 50% Grey to 80% Grey | ||
24.4 ms ... rise ↗ and fall ↘ combined | ↗ 11.9 ms rise | |
↘ 12.5 ms fall | ||
The screen shows good response rates in our tests, but may be too slow for competitive gamers. In comparison, all tested devices range from 0.2 (minimum) to 636 (maximum) ms. » 29 % of all devices are better. This means that the measured response time is better than the average of all tested devices (33.7 ms). |
Screen Flickering / PWM (Pulse-Width Modulation)
Screen flickering / PWM not detected | |||
In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 17903 (minimum: 5 - maximum: 3846000) Hz was measured. |
视角稳定的 IPS 面板允许从任何位置进行阅读。此外,只要阳光不太强烈,在户外也可以阅读屏幕。
性能 - Ryzen 火力全开
在 ThinkPad L15 G4 系列中,联想提供了搭载 AMD APU(Ryzen 7000)和英特尔 CPU(Raptor Lake)的机型。在本次评测中,我们将重点介绍基于 AMD 的机型。在测试期间,AMD 机型的价格从 900 美元到 1300 美元不等。
测试条件
联想没有使用自己的能耗配置文件,而是采用了 Windows 配置文件,称为能耗状态(见表)。根据所选状态的不同,所提供的性能水平也不同。对于基准测试和运行时负载,使用了 "最佳性能 "配置文件,而对于其他运行时测试,则使用了 "平衡 "配置文件。
最佳性能 | 平衡 | 最佳节能 | |
---|---|---|---|
功率限制 1 (HWInfo) | 31 瓦 | 25 瓦 | 15 瓦 |
功率限制 2 (HWInfo) | 40 瓦 | 30 瓦 | 20 瓦 |
处理器
产品 Ryzen 7 PRO 7730U APURyzen 7 PRO 7730U APU 属于 Barcelo 系列,基于 Zen 3 架构,拥有 8 个 CPU 内核,共 16 个线程,单核心最高主频可达 4.55 GHz。正如在 CB15 循环中观察到的那样,在持续的多线程负载下,CPU 始终保持较高的 Turbo 时钟。
虽然性能受使用中的能源配置文件影响,但不同配置文件之间的差异并不大。
基准测试结果与非 "PRO "版本的 Ryzen 7 7730U APU 相比,表明在 "最佳性能 "配置文件下,目前的 APU 值处于平均水平。PRO "表示支持AMD PRO 技术。技术,包括一系列专为商业用途定制的安全功能。
最佳性能(网络/电池) | 平衡 | 最佳节能 | |
---|---|---|---|
CB 15(多线程) | 1.756 pts/1.029 pts | 1.543 pts | 1.385 pts |
CB 15(单线程) | 230 分/96 分 | 226 分 | 209 分 |
Cinebench R15 Multi Loop
* ... smaller is better
AIDA64: FP32 Ray-Trace | FPU Julia | CPU SHA3 | CPU Queen | FPU SinJulia | FPU Mandel | CPU AES | CPU ZLib | FP64 Ray-Trace | CPU PhotoWorxx
Performance Rating | |
SCHENKER VIA 15 Pro M22 | |
Average AMD Ryzen 7 PRO 7730U | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
HP ProBook 445 G10 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average of class Office | |
Acer Aspire Vero AV15-53P | |
Dell Latitude 3440 |
AIDA64 / FP32 Ray-Trace | |
SCHENKER VIA 15 Pro M22 | |
Average AMD Ryzen 7 PRO 7730U (11737 - 11830, n=2) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
HP ProBook 445 G10 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average of class Office (763 - 24250, n=121, last 2 years) | |
Dell Latitude 3440 | |
Acer Aspire Vero AV15-53P |
AIDA64 / FPU Julia | |
Average AMD Ryzen 7 PRO 7730U (75606 - 76225, n=2) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
SCHENKER VIA 15 Pro M22 | |
HP ProBook 445 G10 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average of class Office (4027 - 102228, n=121, last 2 years) | |
Acer Aspire Vero AV15-53P | |
Dell Latitude 3440 |
AIDA64 / CPU SHA3 | |
Average AMD Ryzen 7 PRO 7730U (2459 - 2526, n=2) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
SCHENKER VIA 15 Pro M22 | |
Average of class Office (279 - 4442, n=120, last 2 years) | |
HP ProBook 445 G10 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Dell Latitude 3440 | |
Acer Aspire Vero AV15-53P |
AIDA64 / CPU Queen | |
SCHENKER VIA 15 Pro M22 | |
Average AMD Ryzen 7 PRO 7730U (89597 - 89652, n=2) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
HP ProBook 445 G10 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average of class Office (8031 - 113016, n=121, last 2 years) | |
Acer Aspire Vero AV15-53P | |
Dell Latitude 3440 |
AIDA64 / FPU SinJulia | |
SCHENKER VIA 15 Pro M22 | |
Average AMD Ryzen 7 PRO 7730U (10952 - 11119, n=2) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
HP ProBook 445 G10 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average of class Office (404 - 14288, n=121, last 2 years) | |
Acer Aspire Vero AV15-53P | |
Dell Latitude 3440 |
AIDA64 / FPU Mandel | |
Average AMD Ryzen 7 PRO 7730U (41392 - 41775, n=2) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
SCHENKER VIA 15 Pro M22 | |
HP ProBook 445 G10 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average of class Office (2054 - 54365, n=121, last 2 years) | |
Acer Aspire Vero AV15-53P | |
Dell Latitude 3440 |
AIDA64 / CPU AES | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Average AMD Ryzen 7 PRO 7730U (50550 - 50614, n=2) | |
Average of class Office (5226 - 147611, n=121, last 2 years) | |
SCHENKER VIA 15 Pro M22 | |
Dell Latitude 3440 | |
Acer Aspire Vero AV15-53P | |
HP ProBook 445 G10 | |
Fujitsu LifeBook E5412A E542AMHAAMDE |
AIDA64 / CPU ZLib | |
SCHENKER VIA 15 Pro M22 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Average AMD Ryzen 7 PRO 7730U (689 - 694, n=2) | |
Dell Latitude 3440 | |
Acer Aspire Vero AV15-53P | |
Average of class Office (67.6 - 1018, n=121, last 2 years) | |
HP ProBook 445 G10 | |
Fujitsu LifeBook E5412A E542AMHAAMDE |
AIDA64 / FP64 Ray-Trace | |
SCHENKER VIA 15 Pro M22 | |
Average AMD Ryzen 7 PRO 7730U (6093 - 6134, n=2) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
HP ProBook 445 G10 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average of class Office (432 - 12755, n=121, last 2 years) | |
Dell Latitude 3440 | |
Acer Aspire Vero AV15-53P |
AIDA64 / CPU PhotoWorxx | |
Acer Aspire Vero AV15-53P | |
SCHENKER VIA 15 Pro M22 | |
Average of class Office (4814 - 48177, n=121, last 2 years) | |
Dell Latitude 3440 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average AMD Ryzen 7 PRO 7730U (9310 - 17734, n=2) | |
HP ProBook 445 G10 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE |
系统性能
流畅的操作系统经过优化,适用于办公和互联网应用,以及低设置下的节俭型游戏。由于内存(16 GB,DDR4-3200)仅在单通道模式下运行,部分计算能力仍未发挥出来。安装第二个内存模块可以弥补这一缺陷,激活双通道模式以提高性能。
CrossMark: Overall | Productivity | Creativity | Responsiveness
PCMark 10 / Score | |
Acer Aspire Vero AV15-53P | |
HP ProBook 445 G10 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Average AMD Ryzen 7 PRO 7730U, AMD Radeon RX Vega 8 (Ryzen 4000/5000) () | |
Average of class Office (2325 - 7157, n=106, last 2 years) | |
Dell Latitude 3440 | |
SCHENKER VIA 15 Pro M22 |
PCMark 10 / Essentials | |
Acer Aspire Vero AV15-53P | |
Dell Latitude 3440 | |
HP ProBook 445 G10 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Average AMD Ryzen 7 PRO 7730U, AMD Radeon RX Vega 8 (Ryzen 4000/5000) () | |
Average of class Office (5095 - 20841, n=106, last 2 years) | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
SCHENKER VIA 15 Pro M22 |
PCMark 10 / Productivity | |
HP ProBook 445 G10 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Average AMD Ryzen 7 PRO 7730U, AMD Radeon RX Vega 8 (Ryzen 4000/5000) () | |
Acer Aspire Vero AV15-53P | |
Average of class Office (3041 - 10198, n=106, last 2 years) | |
SCHENKER VIA 15 Pro M22 | |
Dell Latitude 3440 |
PCMark 10 / Digital Content Creation | |
Acer Aspire Vero AV15-53P | |
Average of class Office (1912 - 9056, n=106, last 2 years) | |
SCHENKER VIA 15 Pro M22 | |
Dell Latitude 3440 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
HP ProBook 445 G10 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Average AMD Ryzen 7 PRO 7730U, AMD Radeon RX Vega 8 (Ryzen 4000/5000) () |
CrossMark / Overall | |
Acer Aspire Vero AV15-53P | |
Dell Latitude 3440 | |
Average of class Office (348 - 1891, n=107, last 2 years) | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Average AMD Ryzen 7 PRO 7730U, AMD Radeon RX Vega 8 (Ryzen 4000/5000) () | |
SCHENKER VIA 15 Pro M22 |
CrossMark / Productivity | |
Acer Aspire Vero AV15-53P | |
Dell Latitude 3440 | |
Average of class Office (393 - 1870, n=107, last 2 years) | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Average AMD Ryzen 7 PRO 7730U, AMD Radeon RX Vega 8 (Ryzen 4000/5000) () | |
SCHENKER VIA 15 Pro M22 |
CrossMark / Creativity | |
Acer Aspire Vero AV15-53P | |
Dell Latitude 3440 | |
Average of class Office (340 - 1982, n=107, last 2 years) | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Average AMD Ryzen 7 PRO 7730U, AMD Radeon RX Vega 8 (Ryzen 4000/5000) () | |
SCHENKER VIA 15 Pro M22 |
CrossMark / Responsiveness | |
Acer Aspire Vero AV15-53P | |
Dell Latitude 3440 | |
Average of class Office (258 - 2017, n=107, last 2 years) | |
SCHENKER VIA 15 Pro M22 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Average AMD Ryzen 7 PRO 7730U, AMD Radeon RX Vega 8 (Ryzen 4000/5000) () | |
Fujitsu LifeBook E5412A E542AMHAAMDE |
PCMark 8 Home Score Accelerated v2 | 4542 points | |
PCMark 8 Work Score Accelerated v2 | 5420 points | |
PCMark 10 Score | 5404 points | |
Help |
AIDA64 / Memory Copy | |
Acer Aspire Vero AV15-53P | |
Average of class Office (7158 - 88119, n=122, last 2 years) | |
Dell Latitude 3440 | |
SCHENKER VIA 15 Pro M22 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average AMD Ryzen 7 PRO 7730U (19927 - 37712, n=2) | |
HP ProBook 445 G10 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE |
AIDA64 / Memory Read | |
Acer Aspire Vero AV15-53P | |
SCHENKER VIA 15 Pro M22 | |
Average of class Office (7325 - 87297, n=122, last 2 years) | |
Dell Latitude 3440 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average AMD Ryzen 7 PRO 7730U (23035 - 39082, n=2) | |
HP ProBook 445 G10 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE |
AIDA64 / Memory Write | |
Acer Aspire Vero AV15-53P | |
Average of class Office (7579 - 94965, n=122, last 2 years) | |
SCHENKER VIA 15 Pro M22 | |
Dell Latitude 3440 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average AMD Ryzen 7 PRO 7730U (22793 - 40738, n=2) | |
HP ProBook 445 G10 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE |
AIDA64 / Memory Latency | |
Acer Aspire Vero AV15-53P | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average AMD Ryzen 7 PRO 7730U (98.5 - 102.6, n=2) | |
SCHENKER VIA 15 Pro M22 | |
Average of class Office (44.3 - 188.3, n=123, last 2 years) | |
HP ProBook 445 G10 | |
Dell Latitude 3440 |
* ... smaller is better
DPC 延迟
标准延迟监控测试包括网上冲浪、4K 视频播放和 Prime95 高负载,发现了异常情况。该系统似乎不太适合实时视频和音频编辑。值得注意的是,未来的软件更新可能会改善甚至降低性能。
DPC Latencies / LatencyMon - interrupt to process latency (max), Web, Youtube, Prime95 | |
SCHENKER VIA 15 Pro M22 | |
Dell Latitude 3440 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
HP ProBook 445 G10 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Acer Aspire Vero AV15-53P |
* ... smaller is better
存储设备
系统硬盘是来自 SK Hynix 的 512 GB SSD(PCIe 4,M.2-2242),整体数据传输率良好。由于安装在 PCIe 3 插槽中,它未能充分发挥潜力。值得肯定的是,它没有出现热引起的节流现象。需要强调的是,它只兼容 M.2-2242 格式的固态硬盘,不兼容更常见的 M.2-2280 型号。遗憾的是,L15 没有为额外的固态硬盘提供空间。
* ... smaller is better
Continuous power read: DiskSpd Read Loop, Queue Depth 8
图形卡
集成的 Vega 8iGPU 在 AMD 目前的产品阵容中处于中端位置,拥有 512 个着色器,支持 DirectX 12,最高时钟频率为 2,000 MHz。令人印象深刻的是,后者可以永久保持,这在Witcher 3 测试中得到了证明。由于工作内存在单通道模式下运行,基准测试结果远远低于平均水平。如果安装第二个内存模块,激活双通道模式(见图),就能大幅提升性能。
3DMark Performance Rating - Percent | |
Acer Aspire Vero AV15-53P | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
SCHENKER VIA 15 Pro M22 -1! | |
Average of class Office | |
Average AMD Radeon RX Vega 8 (Ryzen 4000/5000) | |
Dell Latitude 3440 -1! | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
HP ProBook 445 G10 -1! | |
Lenovo ThinkPad L15 Gen 4 21H70021GE |
3DMark 11 - 1280x720 Performance GPU | |
Lenovo ThinkPad L15 Gen 4 21H70021GE (Dual-Channel-Mode) | |
SCHENKER VIA 15 Pro M22 | |
Acer Aspire Vero AV15-53P | |
Average of class Office (1474 - 13132, n=114, last 2 years) | |
Average AMD Radeon RX Vega 8 (Ryzen 4000/5000) (3459 - 7591, n=54) | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Dell Latitude 3440 | |
HP ProBook 445 G10 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE |
3DMark 06 Standard Score | 14729 points | |
3DMark 11 Performance | 4207 points | |
3DMark Cloud Gate Standard Score | 15779 points | |
3DMark Fire Strike Score | 2186 points | |
3DMark Time Spy Score | 908 points | |
Help |
游戏性能
虽然内置 APU 的运算能力可以满足许多低设置下的低要求游戏,但必须指出的是,ThinkPad 并不是作为游戏笔记本设计的。所观察到的相对较低的帧速率可归因于在单通道模式下运行的内存。值得注意的是,如果安装第二个内存模块,从而激活双通道模式(见图),性能将得到明显改善。
Performance Rating - Percent | |
Acer Aspire Vero AV15-53P -1! | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
Average AMD Radeon RX Vega 8 (Ryzen 4000/5000) | |
Average of class Office | |
SCHENKER VIA 15 Pro M22 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Dell Latitude 3440 | |
HP ProBook 445 G10 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE |
The Witcher 3 - 1024x768 Low Graphics & Postprocessing | |
Average of class Office (8.4 - 177, n=105, last 2 years) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE (Dual-Channel-Mode) | |
SCHENKER VIA 15 Pro M22 | |
Average AMD Radeon RX Vega 8 (Ryzen 4000/5000) (27.2 - 89, n=47) | |
Dell Latitude 3440 | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
HP ProBook 445 G10 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE |
GTA V - 1366x768 Normal/Off AF:4x | |
Lenovo ThinkPad L15 Gen 4 21H70021GE (Dual-Channel-Mode) | |
SCHENKER VIA 15 Pro M22 | |
Acer Aspire Vero AV15-53P | |
Average AMD Radeon RX Vega 8 (Ryzen 4000/5000) (34 - 148, n=42) | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average of class Office (7.47 - 171.4, n=103, last 2 years) | |
Dell Latitude 3440 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE | |
HP ProBook 445 G10 |
Final Fantasy XV Benchmark - 1280x720 Lite Quality | |
Acer Aspire Vero AV15-53P (1.3) | |
SCHENKER VIA 15 Pro M22 (1.3) | |
Average of class Office (5.42 - 103.1, n=116, last 2 years) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE (1.3, Dual-Channel-Mode) | |
Average AMD Radeon RX Vega 8 (Ryzen 4000/5000) (21.9 - 50.1, n=52) | |
Dell Latitude 3440 (1.3) | |
Fujitsu LifeBook E5412A E542AMHAAMDE (1.3) | |
HP ProBook 445 G10 (1.3) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE (1.3) |
Strange Brigade - 1280x720 lowest AF:1 | |
Acer Aspire Vero AV15-53P (1.47.22.14 D3D12) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE (1.47.22.14 D3D12, Dual-Channel-Mode) | |
Average of class Office (16.3 - 175.7, n=110, last 2 years) | |
Average AMD Radeon RX Vega 8 (Ryzen 4000/5000) (43 - 117, n=50) | |
SCHENKER VIA 15 Pro M22 (1.47.22.14 D3D12) | |
Fujitsu LifeBook E5412A E542AMHAAMDE (1.47.22.14 D3D12) | |
Dell Latitude 3440 (1.47.22.14 D3D12) | |
HP ProBook 445 G10 (1.47.22.14 D3D12) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE (1.47.22.14 D3D12) |
Dota 2 Reborn - 1366x768 med (1/3) | |
Average AMD Radeon RX Vega 8 (Ryzen 4000/5000) (49.9 - 122.3, n=57) | |
Lenovo ThinkPad L15 Gen 4 21H70021GE (Dual-Channel-Mode) | |
SCHENKER VIA 15 Pro M22 | |
Acer Aspire Vero AV15-53P | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Average of class Office (10.9 - 146.2, n=124, last 2 years) | |
HP ProBook 445 G10 | |
Dell Latitude 3440 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE |
X-Plane 11.11 - 1280x720 low (fps_test=1) | |
Acer Aspire Vero AV15-53P | |
Average AMD Radeon RX Vega 8 (Ryzen 4000/5000) (26.9 - 64.9, n=57) | |
Fujitsu LifeBook E5412A E542AMHAAMDE | |
Lenovo ThinkPad L15 Gen 4 21H70021GE (Dual-Channel-Mode) | |
Average of class Office (9.12 - 128.2, n=124, last 2 years) | |
Dell Latitude 3440 | |
SCHENKER VIA 15 Pro M22 | |
HP ProBook 445 G10 | |
Lenovo ThinkPad L15 Gen 4 21H70021GE |
为了评估帧频在较长时间内的稳定性,我们以全高清分辨率和最高质量设置对游戏 "TheWitcher 3"进行了 60 分钟的测试。游戏中的角色保持静止不动,没有观察到明显的帧速率下降。
Witcher 3 FPS chart
low | med. | high | ultra | |
GTA V (2015) | 61.8 | 56.1 | 15.6 | 6.76 |
The Witcher 3 (2015) | 38.8 | 24 | 12 | 8.1 |
Dota 2 Reborn (2015) | 95.2 | 66.8 | 33.4 | 31.4 |
Final Fantasy XV Benchmark (2018) | 22.2 | 11.7 | 7.87 | |
X-Plane 11.11 (2018) | 29.7 | 23.8 | 21.2 | |
Far Cry 5 (2018) | 27 | 13 | 12 | 12 |
Strange Brigade (2018) | 43.4 | 16.9 | 14.6 | 12.8 |
Cyberpunk 2077 1.6 (2022) | 10.9 | 8.08 | 6.33 | 5.6 |
F1 23 (2023) | 21 | 19 | 14.9 | 10.9 |
排放 - L15 几乎没有噪音
系统噪音
ThinkPad 在整个负载范围内都能保持极低的噪音水平。风扇经常保持静止或低速运转。在 "最佳性能 "能耗模式下,满载时的最大声压级达到 32.7 dB(A)--许多笔记本电脑在低负载时甚至达不到这个值。
可惜的是:当大量访问固态硬盘时,机壳内会传出电子溅射声。
Noise Level
Idle |
| 23.5 / 23.5 / 23.5 dB(A) |
Load |
| 27.5 / 32.7 dB(A) |
| ||
30 dB silent 40 dB(A) audible 50 dB(A) loud |
||
min: , med: , max: Earthworks M23R, Arta (15 cm distance) environment noise: 23.5 dB(A) |
Lenovo ThinkPad L15 Gen 4 21H70021GE Vega 8, R7 PRO 7730U, SK hynix HFS512GEJ4X113N | Acer Aspire Vero AV15-53P Iris Xe G7 96EUs, i7-1355U, Kingston OM8SEP4512Q-AA | SCHENKER VIA 15 Pro M22 Vega 8, R7 5700U, Samsung SSD 970 EVO Plus 1TB | HP ProBook 445 G10 Vega 7, R5 7530U, Kioxia BG5 KBG50ZNS512G | Fujitsu LifeBook E5412A E542AMHAAMDE Vega 7, R5 PRO 5675U, WDC PC SN530 SDBQNPZ-512G | Dell Latitude 3440 Iris Xe G7 80EUs, i5-1345U, Samsung PM9A1 MZVL2512HCJQ | |
---|---|---|---|---|---|---|
Noise | -19% | -11% | -10% | -11% | -13% | |
off / environment * | 23.5 | 25.89 -10% | 24 -2% | 24 -2% | 23.6 -0% | 23.9 -2% |
Idle Minimum * | 23.5 | 26.68 -14% | 24 -2% | 24 -2% | 23.6 -0% | 24.4 -4% |
Idle Average * | 23.5 | 26.04 -11% | 24 -2% | 25 -6% | 23.6 -0% | 24.4 -4% |
Idle Maximum * | 23.5 | 26.05 -11% | 27.5 -17% | 28 -19% | 28.7 -22% | 24.4 -4% |
Load Average * | 27.5 | 39.23 -43% | 33.7 -23% | 33 -20% | 36.3 -32% | 37.1 -35% |
Witcher 3 ultra * | 32.7 | 33.7 -3% | 36 -10% | 36.3 -11% | 38.2 -17% | |
Load Maximum * | 32.7 | 40.25 -23% | 42.4 -30% | 36 -10% | 36.3 -11% | 40.2 -23% |
* ... smaller is better
温度
总体而言,笔记本电脑仅有轻微发热。Witcher 3 测试记录的选择性最高值为 113 °F。在日常使用中,温度值保持在绿色范围内,非常舒适。
(+) The maximum temperature on the upper side is 39.1 °C / 102 F, compared to the average of 34.2 °C / 94 F, ranging from 21.2 to 62.5 °C for the class Office.
(+) The bottom heats up to a maximum of 36.1 °C / 97 F, compared to the average of 36.7 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 22.1 °C / 72 F, compared to the device average of 29.5 °C / 85 F.
(+) Playing The Witcher 3, the average temperature for the upper side is 30.5 °C / 87 F, compared to the device average of 29.5 °C / 85 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 24.5 °C / 76.1 F and are therefore cool to the touch.
(+) The average temperature of the palmrest area of similar devices was 27.7 °C / 81.9 F (+3.2 °C / 5.8 F).
Lenovo ThinkPad L15 Gen 4 21H70021GE AMD Ryzen 7 PRO 7730U, AMD Radeon RX Vega 8 (Ryzen 4000/5000) | Acer Aspire Vero AV15-53P Intel Core i7-1355U, Intel Iris Xe Graphics G7 96EUs | SCHENKER VIA 15 Pro M22 AMD Ryzen 7 5700U, AMD Radeon RX Vega 8 (Ryzen 4000/5000) | HP ProBook 445 G10 AMD Ryzen 5 7530U, AMD Radeon RX Vega 7 | Fujitsu LifeBook E5412A E542AMHAAMDE AMD Ryzen 5 PRO 5675U, AMD Radeon RX Vega 7 | Dell Latitude 3440 Intel Core i5-1345U, Intel Iris Xe Graphics G7 80EUs | |
---|---|---|---|---|---|---|
Heat | -20% | -14% | -21% | -28% | -15% | |
Maximum Upper Side * | 39.1 | 43 -10% | 41.2 -5% | 43 -10% | 49.5 -27% | 35.2 10% |
Maximum Bottom * | 36.1 | 42.6 -18% | 43.5 -20% | 51 -41% | 50.3 -39% | 41 -14% |
Idle Upper Side * | 23.1 | 30 -30% | 28.4 -23% | 27 -17% | 29.6 -28% | 29.8 -29% |
Idle Bottom * | 25.7 | 31.1 -21% | 28.1 -9% | 30 -17% | 30 -17% | 32 -25% |
* ... smaller is better
压力测试
压力测试包括 Prime95 和 Furmark 的连续运行,是测试系统在满负荷情况下稳定性的极端场景。测试开始时,CPU 的时钟频率为 3.4 至 3.6 GHz,随着测试的进行,时钟频率逐渐降至 3 至 3.1 GHz。与此同时,GPU 的时钟频率在短时间内从 2 GHz 降至 1.4 GHz,并保持在这一较低水平。
发言人
立体声扬声器能产生不错的音效,尽管低音效果极差。
Lenovo ThinkPad L15 Gen 4 21H70021GE audio analysis
(±) | speaker loudness is average but good (78.5 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 23.7% lower than median
(±) | linearity of bass is average (11.2% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.9% away from median
(+) | mids are linear (6.8% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.4% away from median
(+) | highs are linear (2.2% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (17.5% difference to median)
Compared to same class
» 22% of all tested devices in this class were better, 6% similar, 71% worse
» The best had a delta of 7%, average was 22%, worst was 53%
Compared to all devices tested
» 28% of all tested devices were better, 8% similar, 63% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Acer Aspire Vero AV15-53P audio analysis
(±) | speaker loudness is average but good (76.3 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 28.3% lower than median
(±) | linearity of bass is average (13% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.6% away from median
(+) | mids are linear (6.2% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2.6% away from median
(+) | highs are linear (6.1% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (20.4% difference to median)
Compared to same class
» 39% of all tested devices in this class were better, 11% similar, 51% worse
» The best had a delta of 7%, average was 22%, worst was 53%
Compared to all devices tested
» 48% of all tested devices were better, 8% similar, 44% worse
» The best had a delta of 4%, average was 25%, worst was 134%
能源管理 - 联想笔记本电脑提供良好的运行时间
耗电量
功耗符合所安装硬件的预期水平。在Witcher 3 恒定功耗测试中,观察到压力测试的需求明显下降。所提供的电源装置(65 瓦)的尺寸足以满足系统的需要。
Off / Standby | 0.8 / 1 Watt |
Idle | 4.5 / 8.5 / 10.5 Watt |
Load |
35.6 / 57.9 Watt |
Lenovo ThinkPad L15 Gen 4 21H70021GE R7 PRO 7730U, Vega 8, SK hynix HFS512GEJ4X113N, IPS, 1920x1080, 15.60 | Acer Aspire Vero AV15-53P i7-1355U, Iris Xe G7 96EUs, Kingston OM8SEP4512Q-AA, IPS, 1920x1080, 15.60 | SCHENKER VIA 15 Pro M22 R7 5700U, Vega 8, Samsung SSD 970 EVO Plus 1TB, IPS, 2560x1440, 15.60 | HP ProBook 445 G10 R5 7530U, Vega 7, Kioxia BG5 KBG50ZNS512G, IPS, 1920x1080, 14.00 | Fujitsu LifeBook E5412A E542AMHAAMDE R5 PRO 5675U, Vega 7, WDC PC SN530 SDBQNPZ-512G, IPS, 1920x1080, 14.00 | Dell Latitude 3440 i5-1345U, Iris Xe G7 80EUs, Samsung PM9A1 MZVL2512HCJQ, IPS, 1920x1080, 14.00 | Average AMD Radeon RX Vega 8 (Ryzen 4000/5000) | Average of class Office | |
---|---|---|---|---|---|---|---|---|
Power Consumption | -4% | -31% | -2% | 6% | -2% | -6% | 3% | |
Idle Minimum * | 4.5 | 5.05 -12% | 6.9 -53% | 7 -56% | 4.1 9% | 3.7 18% | 5.25 ? -17% | 4.3 ? 4% |
Idle Average * | 8.5 | 6.28 26% | 10.9 -28% | 8 6% | 6.6 22% | 6.5 24% | 7.82 ? 8% | 7.34 ? 14% |
Idle Maximum * | 10.5 | 8.5 19% | 11.3 -8% | 9 14% | 7.4 30% | 9.5 10% | 9.25 ? 12% | 9.13 ? 13% |
Load Average * | 35.6 | 42.184 -18% | 54.2 -52% | 34 4% | 43.1 -21% | 46.9 -32% | 45.3 ? -27% | 41 ? -15% |
Witcher 3 ultra * | 37.4 | 45.4 -21% | 47.3 -26% | 36.2 3% | 42.6 -14% | 42.1 -13% | ||
Load Maximum * | 57.9 | 69.5 -20% | 69 -19% | 47 19% | 50.9 12% | 67 -16% | 60.1 ? -4% | 58 ? -0% |
* ... smaller is better
Power consumption Witcher 3 / stress test
Power consumption with external monitor
电池寿命
根据数据表,联想为 ThinkPad 提供了三种电池选择(46.5 Wh、57 Wh 和 63 Wh),本次测试使用的是中间一种。因此,这款 15.6 英寸平板电脑的实际运行时间非常出色,达到了 11:56 小时(WiFi;通过脚本浏览网站)和 9:29 小时(视频;短片 Big Buck Bunny,H.264 编码,FHD)。
Lenovo ThinkPad L15 Gen 4 21H70021GE R7 PRO 7730U, Vega 8, 57 Wh | Acer Aspire Vero AV15-53P i7-1355U, Iris Xe G7 96EUs, 54.4 Wh | SCHENKER VIA 15 Pro M22 R7 5700U, Vega 8, 91 Wh | HP ProBook 445 G10 R5 7530U, Vega 7, 42 Wh | Fujitsu LifeBook E5412A E542AMHAAMDE R5 PRO 5675U, Vega 7, 60 Wh | Dell Latitude 3440 i5-1345U, Iris Xe G7 80EUs, 54 Wh | Average of class Office | |
---|---|---|---|---|---|---|---|
Battery Runtime | 6% | -8% | -21% | -24% | -26% | -3% | |
Reader / Idle | 1504 | 1436 ? -5% | |||||
H.264 | 569 | 493 -13% | 705 ? 24% | ||||
WiFi v1.3 | 716 | 714 0% | 660 -8% | 568 -21% | 623 -13% | 528 -26% | 592 ? -17% |
Load | 133 | 148 11% | 70 -47% | 117.7 ? -12% |
Pros
Cons
评语 - 可靠的商务笔记本
与 Ryzen 7 PRO 7730U和 16GB 内存(单通道模式)的组合,可轻松应对办公、互联网应用和节俭型游戏。我们建议安装第二个内存模块,以充分释放 APU 的潜力,尤其是图形性能。
联想推出的 ThinkPad L15 Gen 4(AMD)是一款性能全面的中端商务笔记本电脑,但也存在一些小缺点。
其紧凑的设计、适中的重量(约 4.18 磅)和出色的运行时间使 L15 成为一款移动性很强的笔记本电脑。两个用于供电的 USB-C 端口(USB 3.2 Gen 2)和与现有工作站设置的无缝集成是其显著特点。此外,低辐射值和内置的 LTE 调制解调器也起到了积极作用。
不过,内置的 FHD 屏幕(IPS,15.6 英寸)在色彩空间覆盖方面存在不足,亮度仍低于目标值(大于 300 cd/m²)。尽管存在这些缺点,但该显示屏仍拥有出色的对比度和哑光表面。
作为 L15 的替代品,Acer Aspire Vero AV15 。它拥有更亮、色彩更丰富(sRGB)的 FHD 显示屏、两个 Thunderbolt 4 端口和一个 QHD 网络摄像头。但它也有不足之处,比如没有千兆以太网插槽和存储卡读卡器。此外,内存是板载的,这意味着无法更换或扩展。
价格和供应情况
联想 ThinkPad L15 Gen 4(AMD)在亚马逊的售价为 1,300 美元。
Lenovo ThinkPad L15 Gen 4 21H70021GE
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12/06/2023 v7
Sascha Mölck
Transparency
The present review sample was made available to the author as a loan by the manufacturer or a shop for the purposes of review. The lender had no influence on this review, nor did the manufacturer receive a copy of this review before publication. There was no obligation to publish this review.