联想Tab M8 2022(第三代)LTE评测--小型平板电脑还是巨型智能手机?
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潜在的竞争对手比较
Rating | Date | Model | Weight | Height | Size | Resolution | Best Price |
---|---|---|---|---|---|---|---|
80.8 % | 02/2023 | Lenovo Tab M8 (3rd Gen) Helio P22T MT8768T, PowerVR GE8320 | 305 g | 8.15 mm | 8.00" | 1280x800 | |
79.7 % | 08/2021 | Samsung Galaxy Tab A7 Lite Helio P22T MT8768T, PowerVR GE8320 | 366 g | 8 mm | 8.70" | 1340x800 | |
80.4 % | 01/2023 | Amazon Fire HD 8 2022 MT8169A, Mali-G52 MP2 | 337 g | 9.7 mm | 8.00" | 1280x800 | |
81 % | 03/2020 | Lenovo Tab M8 HD Helio A22 MT6762M, PowerVR GE8320 | 305 g | 8.2 mm | 8.00" | 1280x800 |
外壳和功能 - Tab M8 2022的金属背面
联想Tab M8 2022是联想廉价而方便的平板电脑的第三次迭代,其价格远低于200欧元(约200美元)。联想已经发布了一个Wi-Fi和一个LTE变体。我们测试的是也能使用移动网络的变体,因为它有一个有趣的功能:你也可以用这台8英寸的平板电脑打电话。
与第二代相比,外壳在视觉上几乎没有变化,但它变得更窄了一些,这是由屏幕周围更薄的边缘实现的。此外,还有一个相当稳定的金属背面,平板电脑只能被扭动一下,然后悄悄地吱吱作响,但它整体看起来非常坚固。它非常轻,有305克。
安装的32GB大容量存储空间很紧张,但至少你还可以使用microSD来存储数据。然而,在我们用参考的microSD卡Angelbird V60进行的测试中,读卡器在复制时有点慢。尤其是写入速度相对较慢。
SD Card Reader - average JPG Copy Test (av. of 3 runs) | |
Samsung Galaxy Tab A7 Lite (Toshiba Exceria Pro M501) | |
Amazon Fire HD 8 2022 (Angelbird V60) | |
Lenovo Tab M8 (3rd Gen) (Angelbird V60) |
Cross Platform Disk Test (CPDT)
通信、软件和操作 - 支持通话
联想Tab M8第三代在我们的Wi-Fi测试中显示了稳定的传输速率。通过参考路由器华硕ROG Rapture AXE11000,我们得到的速度对于WiFi-5设备来说处于良好水平。
然而,你也可以在LTE版本(我们的测试设备)中插入一张SIM卡。如果你想在国外使用移动互联网,你应该在出发前获得详细的信息,因为许多LTE频率不被支持。
这款8英寸平板电脑甚至提供了电话功能。你可以通过平板电脑连接耳机或直接拨打电话,但 只能通过扬声器和麦克风(免提)。在一个简短的测试电话中,我们很喜欢其通话质量。这款LTE平板电脑还可以通过卫星定位确定其位置。
联想预装了Android 11,依靠一个相当纯粹的系统,没有重大变化,也没有安装任何第三方应用程序。在测试时,安全补丁是2022年11月的,因此需要再次更新。
通过60赫兹触摸屏的操作大多是精确的,但并不总是反应灵敏,因为系统经常抽搐或需要一会儿来处理输入。即使在菜单中,该平板电脑也不总是没有停顿,在更复杂的应用程序中,操作变得非常迟缓。
没有指纹传感器;你只能使用面部识别作为生物识别解锁方法。这在光线良好的情况下效果还不错,但需要花点时间来识别面部。由于是基于软件的解决方案,这种方法也不是很安全,不能被操纵。
Networking | |
iperf3 transmit AX12 | |
Samsung Galaxy Tab A7 Lite | |
Lenovo Tab M8 HD | |
iperf3 receive AX12 | |
Samsung Galaxy Tab A7 Lite | |
Lenovo Tab M8 HD | |
iperf3 receive AXE11000 | |
Amazon Fire HD 8 2022 | |
Lenovo Tab M8 (3rd Gen) | |
iperf3 transmit AXE11000 | |
Amazon Fire HD 8 2022 | |
Lenovo Tab M8 (3rd Gen) |
相机 - 简单的设备
由于预算紧张,Tab M8 2022也不得不使用非常基本的摄像头:背面的500万像素镜头作为主摄像头,拍出的照片细节不多,只有较低的动态和清晰度。当光线变暗,对比度增加时,照片会变得更加模糊,通常在黑暗区域没有什么可看的。
相机的低锐度在实验室图片中也很明显,文字有时几乎看不清楚。在1勒克斯的照明下,图片图案完全消失。
视频可以在1080p和30fps下进行。然而,自动对焦速度很慢,整体图片质量非常平庸。
在前面,有一个同样非常基本的200万像素传感器作为摄像头。自拍可以满足低要求,但往往有点暗淡,而且细节不多。
Image Comparison
Choose a scene and navigate within the first image. One click changes the position on touchscreens. One click on the zoomed-in image opens the original in a new window. The first image shows the scaled photograph of the test device.
Main cameraMain cameraLow Light显示 - 该类的典型特征
无论如何,你不能指望相对便宜的平板电脑屏幕有多高的亮度。然而,Tab M8 2022的IPS面板是相当暗的屏幕之一,即使与其他平板电脑相比,其平均亮度为330 cd/m²。这使得户外使用很困难,但通常在室内就足够了。
1,280 x 800像素的分辨率是该级别的标准,但仍然会导致图片有些模糊。当流媒体时,你还必须接受这样一个事实,即该平板电脑没有Widevine认证,因此内容不能以高清显示。
由于黑值较高,对比度也明显下降,显示的颜色看起来非常暗淡。在灰阶中可以看到偏色。所有棕色的色调也明显失真。
至少我们没有注意到任何PWM,所以即使是对闪烁敏感的人也应该能够很好地使用这款平板电脑。
|
Brightness Distribution: 81 %
Center on Battery: 353 cd/m²
Contrast: 552:1 (Black: 0.64 cd/m²)
ΔE Color 6.5 | 0.5-29.43 Ø5
ΔE Greyscale 7.3 | 0.57-98 Ø5.3
84.6% sRGB (Calman 2D)
Gamma: 2.118
Lenovo Tab M8 (3rd Gen) IPS, 1280x800, 8.00 | Samsung Galaxy Tab A7 Lite TFT, 1340x800, 8.70 | Amazon Fire HD 8 2022 LCD, 1280x800, 8.00 | Lenovo Tab M8 HD IPS, 1280x800, 8.00 | |
---|---|---|---|---|
Screen | 28% | 34% | 53% | |
Brightness middle | 353 | 360 2% | 388 10% | 379 7% |
Brightness | 330 | 332 1% | 364 10% | 346 5% |
Brightness Distribution | 81 | 85 5% | 90 11% | 88 9% |
Black Level * | 0.64 | 0.24 62% | 0.36 44% | 0.21 67% |
Contrast | 552 | 1500 172% | 1078 95% | 1805 227% |
Colorchecker dE 2000 * | 6.5 | 6.7 -3% | 4.38 33% | 3.8 42% |
Colorchecker dE 2000 max. * | 11.36 | 12.4 -9% | 10.7 6% | 7.5 34% |
Greyscale dE 2000 * | 7.3 | 7.6 -4% | 2.9 60% | 5 32% |
Gamma | 2.118 104% | 2.33 94% | 2.232 99% | 2.23 99% |
CCT | 8264 79% | 8744 74% | 6221 104% | 7514 87% |
* ... smaller is better
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 18071 (minimum: 5 - maximum: 3846000) Hz was measured. |
Display Response Times
↔ Response Time Black to White | ||
---|---|---|
31.2 ms ... rise ↗ and fall ↘ combined | ↗ 13.7 ms rise | |
↘ 17.5 ms fall | ||
The screen shows slow response rates in our tests and will be unsatisfactory for gamers. In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 82 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (21.6 ms). | ||
↔ Response Time 50% Grey to 80% Grey | ||
45.2 ms ... rise ↗ and fall ↘ combined | ↗ 23 ms rise | |
↘ 22.2 ms fall | ||
The screen shows slow response rates in our tests and will be unsatisfactory for gamers. In comparison, all tested devices range from 0.2 (minimum) to 636 (maximum) ms. » 74 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (33.9 ms). |
性能、排放和电池寿命--功率小,运行时间好
芯片 联发科Helio P22T是一个入门级的SoC,共有8个核心,时钟频率高达2.3GHz。它也被用在 三星Galaxy Tab A7 Lite但它已经相当老了,距离发布已经快5年了。它通常足以在菜单中进行合理流畅的移动,但除此之外,联想Tab M8 2022第三代应该用于简单的任务。它在要求较高的应用程序中经常出现停顿,操作变得困难。
内存也被证明是非常慢的,尽管对于非常便宜的平板电脑来说,其水平并不高。
显卡在3DMark的现代野生生活基准测试中也无能为力。如果你喜欢游戏的话,这给这台平板电脑的未来生存能力带来了不好的影响。此外,长期压力测试也不能运行,所以我们必须切换到GFXBench。在这里,即使在多次运行基准测试后,该平板电脑也没有显示任何性能下降。在较长时间的负载下,发热几乎是不明显的。
上部边缘的扬声器是单独的,但它能产生良好的单声道声音,即使在最大音量下也不会过载,让你享受中音和高音平衡的流行歌曲。耳机或扬声器可以通过一个插孔插座或蓝牙连接。无线编解码器有aptX、aptX HD、SBC、AAC和LDAC。
电池大小合适,有5000毫安时。在我们的WLAN测试中,所产生的运行时间也很好,刚刚超过16小时,足够在没有电源插座的情况下使用一天。充电时你必须有点耐心:当电池电量不足时,可能需要3个小时甚至更长的时间才能再次显示出100%。
Geekbench 5.5 | |
Single-Core | |
Average of class Tablet (140 - 1892, n=67, last 2 years) | |
Samsung Galaxy Tab A7 Lite | |
Average Mediatek Helio P22T MT8768T (160 - 172, n=2) | |
Lenovo Tab M8 (3rd Gen) | |
Amazon Fire HD 8 2022 | |
Multi-Core | |
Average of class Tablet (312 - 8524, n=67, last 2 years) | |
Lenovo Tab M8 (3rd Gen) | |
Average Mediatek Helio P22T MT8768T (920 - 952, n=2) | |
Samsung Galaxy Tab A7 Lite |
PCMark for Android - Work 3.0 | |
Average of class Tablet (3195 - 17267, n=63, last 2 years) | |
Lenovo Tab M8 (3rd Gen) | |
Average Mediatek Helio P22T MT8768T (5120 - 5221, n=2) | |
Samsung Galaxy Tab A7 Lite | |
Amazon Fire HD 8 2022 |
Octane V2 - Total Score | |
Average of class Tablet (2672 - 74614, n=70, last 2 years) | |
Amazon Fire HD 8 2022 | |
Samsung Galaxy Tab A7 Lite | |
Average Mediatek Helio P22T MT8768T (5004 - 5156, n=2) | |
Lenovo Tab M8 (3rd Gen) | |
Lenovo Tab M8 HD |
Lenovo Tab M8 (3rd Gen) | Samsung Galaxy Tab A7 Lite | Amazon Fire HD 8 2022 | Lenovo Tab M8 HD | Average 32 GB eMMC Flash | Average of class Tablet | |
---|---|---|---|---|---|---|
AndroBench 3-5 | 88% | 38% | 36% | 39% | 644% | |
Sequential Read 256KB | 262.1 | 271.1 3% | 270.37 3% | 297.1 13% | 242 ? -8% | 850 ? 224% |
Sequential Write 256KB | 66.7 | 87.2 31% | 113.44 70% | 79.6 19% | 100.5 ? 51% | 535 ? 702% |
Random Read 4KB | 50.8 | 60.8 20% | 39.46 -22% | 77.4 52% | 43.2 ? -15% | 167 ? 229% |
Random Write 4KB | 9.9 | 39.51 299% | 19.81 100% | 15.84 60% | 22.4 ? 126% | 150.6 ? 1421% |
(+) The maximum temperature on the upper side is 30.9 °C / 88 F, compared to the average of 33.8 °C / 93 F, ranging from 20.7 to 53.2 °C for the class Tablet.
(+) The bottom heats up to a maximum of 31.3 °C / 88 F, compared to the average of 33.3 °C / 92 F
(+) In idle usage, the average temperature for the upper side is 25.4 °C / 78 F, compared to the device average of 30 °C / 86 F.
Lenovo Tab M8 (3rd Gen) audio analysis
(±) | speaker loudness is average but good (77.1 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 23.7% lower than median
(±) | linearity of bass is average (8% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 4.6% away from median
(±) | linearity of mids is average (9% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 6.5% higher than median
(+) | highs are linear (5.7% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (23.9% difference to median)
Compared to same class
» 68% of all tested devices in this class were better, 7% similar, 25% worse
» The best had a delta of 7%, average was 23%, worst was 129%
Compared to all devices tested
» 67% of all tested devices were better, 7% similar, 26% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Lenovo Tab M8 HD audio analysis
(+) | speakers can play relatively loud (86 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 24.5% lower than median
(±) | linearity of bass is average (8.7% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 6.9% higher than median
(+) | mids are linear (6.1% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 12.3% higher than median
(+) | highs are linear (3.3% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (27.7% difference to median)
Compared to same class
» 82% of all tested devices in this class were better, 3% similar, 15% worse
» The best had a delta of 7%, average was 23%, worst was 129%
Compared to all devices tested
» 81% of all tested devices were better, 4% similar, 15% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Lenovo Tab M8 (3rd Gen) 5000 mAh | Samsung Galaxy Tab A7 Lite 5100 mAh | Amazon Fire HD 8 2022 4850 mAh | Lenovo Tab M8 HD 5100 mAh | |
---|---|---|---|---|
Battery Runtime | -17% | -3% | 17% | |
WiFi v1.3 | 962 | 803 -17% | 935 -3% | 1124 17% |
Reader / Idle | 2463 | 3581 | ||
H.264 | 800 | 1696 | ||
Load | 245 | 374 |
Pros
Cons
结论 - 一款具有LTE功能的特殊平板电脑
联想Tab M8 2022是一款便宜又方便的平板电脑,由于它的LTE版本和打电话的可能性,它具有有趣的应用可能性。因此,你也可以在WLAN之外使用这款平板电脑,在没有单独的智能手机的情况下,在路上打电话。
然而,有几件事必须考虑:屏幕相当暗,对比度低,所以你只能在户外阴暗的环境中合理地阅读它。至少我们没有注意到任何PWM的闪烁。除非连接了耳机,否则电话只能通过内置的扬声器进行,所以每个人都能听到。
与大多数廉价的平板电脑一样,这些摄像头只对快照或扫描二维码有用。扬声器还不错,Wi-Fi和LTE连接也很稳定和快速。由于有GNSS模块,这款平板电脑也可以用于导航。
然而,处理器的速度相当慢,稀少而迟缓的内存也不是真正的快乐。在软件更新方面,你也必须满足于不频繁的补丁。
作为LTE版本,廉价的联想Tab M8 2022(第三代)提供了有趣的功能,但缓慢的组件使它变得缓慢。
该 三星Galaxy Tab A7 Lite也有LTE版本,但你不能用它打电话。 亚马逊的Fire HD 8甚至更便宜,但你必须接受有限的软件。
价格和可用性
在测试的时候,Tab M8 2022 LTE在联想没有上市。在amazon.de你可以用177欧元买到它。
Wi-Fi版本目前在互联网上的零售商几乎没有便宜的。
Lenovo Tab M8 (3rd Gen)
-
01/30/2023 v7
Florian Schmitt
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.