LG Gram Book 15 牺牲处理器性能，换来更安静的风扇
ⓘ Notebookcheck
虽然我们 的显示屏上的 LG Gram Book 15但我们仍然不得不承认，这款经济型笔记本电脑在性能和风扇噪音方面取得了令人感兴趣的平衡。与其他采用相同处理器的笔记本电脑相比，LG 选择了较慢的 CPU 性能，以大幅降低风扇噪音。
从下面的对比图中可以看出，Gram Book 15 的运行速度比联想 IdeaPad 5 2 合 1 16 或 ThinkPad T14s 2 合 1 低 20% 到 25%，它们都配备了相同的 酷睿至尊 7 255U处理器。作为回报，LG 的风扇噪音要小得多，即使在运行苛刻负载的情况下，在 25 dB(A) 的静音背景下，风扇噪音也只有 28 dB(A)，而上述联想机型在类似条件下的风扇噪音会超过 41 dB(A)。因此，那些将更安静的运行环境置于原始性能之上的用户可能会更喜欢 LG 的做法。
尽管如此，25% 的性能下降还是难以忽视的，因为这基本上抹去了酷睿至尊 7 255U 相对于上一代酷睿至尊 7 155U 的性能优势。例如，Gram Book 15 和 HP Envy x360 15 的 CPU 基准测试结果几乎相同。 惠普 Envy x360 15尽管后者采用的是较早的酷睿 Ultra 7 155U。LG 机型上的 "最大风扇 "模式对于那些偶尔喜欢更快性能的用户来说是个不错的功能。
CPU Performance rating: Percent
Cinebench R23: Multi Core | Single Core
Cinebench R20: CPU (Multi Core) | CPU (Single Core)
Cinebench R15: CPU Multi 64Bit | CPU Single 64Bit
Blender: v2.79 BMW27 CPU
7-Zip 18.03: 7z b 4 | 7z b 4 -mmt1
Geekbench 6.5: Multi-Core | Single-Core
Geekbench 5.5: Multi-Core | Single-Core
HWBOT x265 Benchmark v2.2: 4k Preset
LibreOffice : 20 Documents To PDF
R Benchmark 2.5: Overall mean
Cinebench R23: Multi Core | Single Core
Cinebench R20: CPU (Multi Core) | CPU (Single Core)
Cinebench R15: CPU Multi 64Bit | CPU Single 64Bit
Blender: v2.79 BMW27 CPU
7-Zip 18.03: 7z b 4 | 7z b 4 -mmt1
Geekbench 6.5: Multi-Core | Single-Core
Geekbench 5.5: Multi-Core | Single-Core
HWBOT x265 Benchmark v2.2: 4k Preset
LibreOffice : 20 Documents To PDF
R Benchmark 2.5: Overall mean
| CPU Performance rating | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| Average Intel Core Ultra 7 255U | |
| HP Omnibook 5 16-af1037nr | |
| LG Gram 15U55T | |
| HP 17t-cn500 | |
| Cinebench R23 / Multi Core | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| Average Intel Core Ultra 7 255U (8586 - 12157, n=5) | |
| LG Gram 15U55T | |
| HP Omnibook 5 16-af1037nr | |
| HP 17t-cn500 | |
| Cinebench R23 / Single Core | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| HP Omnibook 5 16-af1037nr | |
| LG Gram 15U55T | |
| Average Intel Core Ultra 7 255U (1717 - 1915, n=5) | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| HP 17t-cn500 | |
| Cinebench R20 / CPU (Multi Core) | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| Average Intel Core Ultra 7 255U (3178 - 4714, n=5) | |
| LG Gram 15U55T | |
| HP Omnibook 5 16-af1037nr | |
| HP 17t-cn500 | |
| Cinebench R20 / CPU (Single Core) | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| HP Omnibook 5 16-af1037nr | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| Average Intel Core Ultra 7 255U (657 - 738, n=5) | |
| LG Gram 15U55T | |
| HP 17t-cn500 | |
| Cinebench R15 / CPU Multi 64Bit | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| Average Intel Core Ultra 7 255U (1490 - 1957, n=5) | |
| LG Gram 15U55T | |
| HP Omnibook 5 16-af1037nr | |
| HP 17t-cn500 | |
| Cinebench R15 / CPU Single 64Bit | |
| LG Gram 15U55T | |
| HP Omnibook 5 16-af1037nr | |
| Average Intel Core Ultra 7 255U (244 - 265, n=5) | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| HP 17t-cn500 | |
| Blender / v2.79 BMW27 CPU | |
| HP 17t-cn500 | |
| LG Gram 15U55T | |
| HP Omnibook 5 16-af1037nr | |
| Average Intel Core Ultra 7 255U (315 - 418, n=5) | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| 7-Zip 18.03 / 7z b 4 | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| Average Intel Core Ultra 7 255U (33768 - 44657, n=5) | |
| LG Gram 15U55T | |
| HP 17t-cn500 | |
| HP Omnibook 5 16-af1037nr | |
| 7-Zip 18.03 / 7z b 4 -mmt1 | |
| LG Gram 15U55T | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| Average Intel Core Ultra 7 255U (5099 - 5229, n=5) | |
| HP Omnibook 5 16-af1037nr | |
| HP 17t-cn500 | |
| Geekbench 6.5 / Multi-Core | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| HP Omnibook 5 16-af1037nr | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| Average Intel Core Ultra 7 255U (9040 - 11075, n=5) | |
| LG Gram 15U55T | |
| HP 17t-cn500 | |
| Geekbench 6.5 / Single-Core | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| LG Gram 15U55T | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| Average Intel Core Ultra 7 255U (2223 - 2523, n=5) | |
| HP Omnibook 5 16-af1037nr | |
| HP 17t-cn500 | |
| Geekbench 5.5 / Multi-Core | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| HP Omnibook 5 16-af1037nr | |
| Average Intel Core Ultra 7 255U (7957 - 10220, n=5) | |
| LG Gram 15U55T | |
| HP 17t-cn500 | |
| Geekbench 5.5 / Single-Core | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| LG Gram 15U55T | |
| HP Omnibook 5 16-af1037nr | |
| Average Intel Core Ultra 7 255U (1616 - 1859, n=5) | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| HP 17t-cn500 | |
| HWBOT x265 Benchmark v2.2 / 4k Preset | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| HP Omnibook 5 16-af1037nr | |
| Average Intel Core Ultra 7 255U (6.6 - 13.1, n=5) | |
| LG Gram 15U55T | |
| HP 17t-cn500 | |
| LibreOffice / 20 Documents To PDF | |
| HP 17t-cn500 | |
| Average Intel Core Ultra 7 255U (47.3 - 60.5, n=5) | |
| LG Gram 15U55T | |
| HP Omnibook 5 16-af1037nr | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| R Benchmark 2.5 / Overall mean | |
| HP 17t-cn500 | |
| Average Intel Core Ultra 7 255U (0.4615 - 0.591, n=5) | |
| Lenovo ThinkPad T14s 2in1 Gen1 | |
| Lenovo IdeaPad 5 2-in-1 16IAL10 | |
| HP Omnibook 5 16-af1037nr | |
| LG Gram 15U55T | |
* ... smaller is better
| LG Gram 15U55T Ultra 7 255U, Graphics 4-Core iGPU (Arrow Lake) | LG Gram SuperSlim (2023) i7-1360P, Iris Xe G7 96EUs | HP Envy x360 15 fe1071cl Ultra 7 155U, Graphics 4-Core iGPU (Arrow Lake) | Asus VivoBook S15 K5504 i9-13900H, Iris Xe G7 96EUs | Lenovo ThinkPad T14s 2in1 Gen1 Ultra 7 255U, Graphics 4-Core iGPU (Arrow Lake) | Lenovo IdeaPad 5 2-in-1 16IAL10 Ultra 7 255U, Graphics 4-Core iGPU (Arrow Lake) | |
|---|---|---|---|---|---|---|
| Noise | -22% | -14% | -27% | -23% | -19% | |
| off / environment * (dB) | 24.8 | 25.2 -2% | 23.6 5% | 25.3 -2% | 25.2 -2% | 23.1 7% |
| Idle Minimum * (dB) | 24.8 | 25.2 -2% | 23.6 5% | 25.3 -2% | 25.2 -2% | 23.1 7% |
| Idle Average * (dB) | 24.8 | 25.2 -2% | 23.6 5% | 25.3 -2% | 25.2 -2% | 23.1 7% |
| Idle Maximum * (dB) | 24.8 | 25.2 -2% | 23.6 5% | 25.3 -2% | 28.5 -15% | 23.1 7% |
| Load Average * (dB) | 25.6 | 43.1 -68% | 23.7 7% | 43.5 -70% | 35.6 -39% | 41.8 -63% |
| Cyberpunk 2077 ultra * (dB) | 28 | 45.8 -64% | 41.8 -49% | 41.8 -49% | ||
| Load Maximum * (dB) | 28.1 | 43.3 -54% | 45.2 -61% | 50.75 -81% | 41.8 -49% | 41.8 -49% |
* ... smaller is better
