Breve Análise do Portátil LG Gram 15 (i5-8250U, FHD)
| SD Card Reader | |
| average JPG Copy Test (av. of 3 runs) | |
| Dell XPS 15 9560 (i7-7700HQ, UHD) | |
| LG Gram 15Z975 | |
| Samsung Notebook 9 NP900X5N-X01US | |
| maximum AS SSD Seq Read Test (1GB) | |
| Dell XPS 15 9560 (i7-7700HQ, UHD) | |
| Samsung Notebook 9 NP900X5N-X01US | |
| LG Gram 15Z975 | |
| Networking | |
| iperf3 transmit AX12 | |
| Dell XPS 15 9560 (i7-7700HQ, UHD) | |
| LG Gram 15Z975 | |
| Samsung Notebook 9 NP900X5N-X01US | |
| iperf3 receive AX12 | |
| Samsung Notebook 9 NP900X5N-X01US | |
| Dell XPS 15 9560 (i7-7700HQ, UHD) | |
| LG Gram 15Z975 | |
| |||||||||||||||||||||||||
iluminação: 89 %
iluminação com acumulador: 273 cd/m²
Contraste: 1241:1 (Preto: 0.22 cd/m²)
ΔE Color 4.77 | 0.5-29.43 Ø4.91
ΔE Greyscale 8.6 | 0.5-98 Ø5.2
76.9% sRGB (Argyll 1.6.3 3D)
50.2% AdobeRGB 1998 (Argyll 1.6.3 3D)
56.3% AdobeRGB 1998 (Argyll 2.2.0 3D)
77.1% sRGB (Argyll 2.2.0 3D)
54.9% Display P3 (Argyll 2.2.0 3D)
Gamma: 1.7
| LG Gram 15Z975 ID: LGD052A, Name: LG Philips LP156WFA-SPC1, IPS, 15.6", 1920x1080 | Acer Swift 3 SF315-51G-57E5 BOE NV156FHM-N48, IPS, 15.6", 1920x1080 | Dell XPS 15 9560 (i7-7700HQ, UHD) IGZO IPS, 15.6", 3840x2160 | Samsung Notebook 9 NP900X5N-X01US ID: BOE06E8, Name: BOE HF NV150FHB-N31, IPS, 15", 1920x1080 | HP Envy 15-as133cl Chi Mei CMN15D8, IPS, 15.6", 1920x1080 | Dell Inspiron 15 7570 BOE06B4, IPS, 15.6", 1920x1080 | |
|---|---|---|---|---|---|---|
| Display | -26% | 57% | 22% | -20% | -25% | |
| Display P3 Coverage | 54.9 | 39.86 -27% | 89.7 63% | 65.2 19% | 42.95 -22% | 40.43 -26% |
| sRGB Coverage | 77.1 | 58.7 -24% | 100 30% | 97.7 27% | 64.3 -17% | 60 -22% |
| AdobeRGB 1998 Coverage | 56.3 | 41.18 -27% | 100 78% | 67.2 19% | 44.41 -21% | 41.77 -26% |
| Response Times | -22% | -58% | -22% | -22% | -29% | |
| Response Time Grey 50% / Grey 80% * | 35.2 ? | 42 ? -19% | 57.2 ? -63% | 40.8 ? -16% | 44.4 ? -26% | 45 ? -28% |
| Response Time Black / White * | 25.6 ? | 32 ? -25% | 39.2 ? -53% | 32.4 ? -27% | 30 ? -17% | 33 ? -29% |
| PWM Frequency | 21000 ? | 962 | 208.3 ? | 1000 ? | 996 ? | |
| Screen | -2% | 13% | 30% | -11% | 8% | |
| Brightness middle | 273 | 248 -9% | 370.1 36% | 565.6 107% | 262.3 -4% | 255 -7% |
| Brightness | 276 | 237 -14% | 356 29% | 524 90% | 240 -13% | 240 -13% |
| Brightness Distribution | 89 | 79 -11% | 87 -2% | 88 -1% | 83 -7% | 91 2% |
| Black Level * | 0.22 | 0.21 5% | 0.37 -68% | 0.49 -123% | 0.24 -9% | 0.16 27% |
| Contrast | 1241 | 1181 -5% | 1000 -19% | 1154 -7% | 1093 -12% | 1594 28% |
| Colorchecker dE 2000 * | 4.77 | 4.98 -4% | 5.3 -11% | 2 58% | 5 -5% | 4.74 1% |
| Colorchecker dE 2000 max. * | 10.76 | 8.41 22% | 9.9 8% | 5 54% | 20.6 -91% | 7.68 29% |
| Greyscale dE 2000 * | 8.6 | 4.26 50% | 4.6 47% | 2.5 71% | 3.2 63% | 3.44 60% |
| Gamma | 1.7 129% | 2.37 93% | 2.31 95% | 2.21 100% | 2.45 90% | 2.43 91% |
| CCT | 6678 97% | 7149 91% | 6284 103% | 6896 94% | 6817 95% | 7064 92% |
| Color Space (Percent of AdobeRGB 1998) | 50.2 | 38 -24% | 88.3 76% | 61.2 22% | 40.5 -19% | 38 -24% |
| Color Space (Percent of sRGB) | 76.9 | 58 -25% | 100 30% | 97.5 27% | 63.5 -17% | 60 -22% |
| Total Average (Program / Settings) | -17% /
-9% | 4% /
12% | 10% /
21% | -18% /
-14% | -15% /
-3% |
* ... smaller is better
Display Response Times
| ↔ Response Time Black to White | ||
|---|---|---|
| 25.6 ms ... rise ↗ and fall ↘ combined | ↗ 14.8 ms rise |  |
| ↘ 10.8 ms fall | ||
| The screen shows relatively slow response rates in our tests and may be too slow for gamers. In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 58 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (20.9 ms). | ||
| ↔ Response Time 50% Grey to 80% Grey | ||
| 35.2 ms ... rise ↗ and fall ↘ combined | ↗ 19.6 ms rise |  |
| ↘ 15.6 ms fall | ||
| The screen shows slow response rates in our tests and will be unsatisfactory for gamers. In comparison, all tested devices range from 0.165 (minimum) to 636 (maximum) ms. » 45 % of all devices are better. This means that the measured response time is similar to the average of all tested devices (32.8 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 8719 (minimum: 5 - maximum: 343500) Hz was measured. | |||
| wPrime 2.10 - 1024m | |
| Lenovo ThinkPad 25 | |
| Dell Latitude 5280 | |
| Microsoft Surface Laptop i7 | |
| Razer Blade Stealth QHD i7-8550U | |
| Dell Inspiron 15 7000 7577 | |
| LG Gram 15Z975 | |
| HP Envy x360 15m-bq121dx | |
* ... smaller is better
| PCMark 8 Home Score Accelerated v2 | 3557 pontos | |
| PCMark 8 Creative Score Accelerated v2 | 4651 pontos | |
| PCMark 8 Work Score Accelerated v2 | 4736 pontos | |
| PCMark 10 Score | 3391 pontos | |
Ajuda | ||
| LG Gram 15Z975 SK Hynix HFS256G39TND-N210A | Acer Swift 3 SF315-51G-57E5 Hynix HFS128G39TND | Dell XPS 15 9560 (i7-7700HQ, UHD) Lite-On CX2-8B512-Q11 | Samsung Notebook 9 NP900X5N-X01US Samsung PM961 MZVLW256HEHP | Dell Inspiron 15 7570 Samsung PM961 NVMe MZVLW512HMJP | |
|---|---|---|---|---|---|
| AS SSD | -20% | 203% | 269% | -127% | |
| Copy Game MB/s | 179.8 | 112.3 -38% | 540 200% | 648 260% | |
| Copy Program MB/s | 141.2 | 97.9 -31% | 411.5 191% | 497.9 253% | |
| Copy ISO MB/s | 197.5 | 130.3 -34% | 1272 544% | 1685 753% | |
| Score Total | 1003 | 854 -15% | 2810 180% | 3906 289% | 1455 45% |
| Score Write | 339 | 204 -40% | 1022 201% | 928 174% | 68 -80% |
| Score Read | 442 | 437 -1% | 1206 173% | 2011 355% | 960 117% |
| Access Time Write * | 0.232 | 0.273 -18% | 0.034 85% | 0.03 87% | 4.391 -1793% |
| Access Time Read * | 0.08 | 0.101 -26% | 0.034 57% | 0.043 46% | 0.04 50% |
| 4K-64 Write | 246.7 | 114.1 -54% | 789 220% | 674 173% | 40.26 -84% |
| 4K-64 Read | 366.5 | 355.3 -3% | 962 162% | 1709 366% | 736 101% |
| 4K Write | 67.6 | 77.5 15% | 112.2 66% | 124.1 84% | 1 -99% |
| 4K Read | 26.24 | 29.84 14% | 41.34 58% | 48.71 86% | 44.3 69% |
| Seq Write | 248.5 | 124 -50% | 1207 386% | 1299 423% | 271.5 9% |
| Seq Read | 488.1 | 515 6% | 2026 315% | 2533 419% | 1800 269% |
* ... smaller is better
| 3DMark | |
| 1280x720 Cloud Gate Standard Graphics | |
| HP Envy x360 15m-bq121dx | |
| Microsoft Surface Laptop i7 | |
| Razer Blade Stealth QHD i7-8550U | |
| HP ProBook 470 G5 | |
| Asus Transformer 4 Pro (i7-7500U, HD620) | |
| LG Gram 15Z975 | |
| Acer TravelMate P257-M-56AX | |
| HP 250 G5 SP X0N33EA | |
| Teclast Tbook 16 Power | |
| 1920x1080 Fire Strike Graphics | |
| HP Envy x360 15m-bq121dx | |
| HP ProBook 470 G5 | |
| Microsoft Surface Laptop i7 | |
| LG Gram 15Z975 | |
| Asus Transformer 4 Pro (i7-7500U, HD620) | |
| 1920x1080 Ice Storm Extreme Graphics | |
| HP ProBook 470 G5 | |
| LG Gram 15Z975 | |
| 3DMark 11 Performance | 1668 pontos | |
| 3DMark Ice Storm Standard Score | 52051 pontos | |
| 3DMark Cloud Gate Standard Score | 7121 pontos | |
| 3DMark Fire Strike Score | 864 pontos | |
Ajuda | ||
| baixo | média | alto | ultra | |
|---|---|---|---|---|
| BioShock Infinite (2013) | 49 | 28 | 23 | 7.5 |
| Rise of the Tomb Raider (2016) | 17 | 10 |
Barulho
| Ocioso |
| 29.2 / 29.2 / 29.2 dB |
| Carga |
| 32.5 / 37.2 dB |
 | ||
30 dB silencioso 40 dB(A) audível 50 dB(A) ruidosamente alto |
||
min:  , med:  , max:  Audix TM1, Arta (15 cm de distância) environment noise: 29.2 dB(A) | ||
| LG Gram 15Z975 UHD Graphics 620, i5-8250U, SK Hynix HFS256G39TND-N210A | Acer Swift 3 SF315-51G-57E5 GeForce MX150, i5-8250U, Hynix HFS128G39TND | Dell XPS 15 9560 (i7-7700HQ, UHD) GeForce GTX 1050 Mobile, i7-7700HQ, Lite-On CX2-8B512-Q11 | Samsung Notebook 9 NP900X5N-X01US GeForce 940MX, i7-7500U, Samsung PM961 MZVLW256HEHP | HP Envy 15-as133cl HD Graphics 620, i7-7500U, HGST Travelstar 5K1000 HTS541010A7E630 | Acer Swift 3 SF315-41-R4W1 Vega 8, R5 2500U, Intel SSD 600p SSDPEKKW256G7 | |
|---|---|---|---|---|---|---|
| Noise | -4% | -13% | -2% | -7% | -6% | |
| off / environment * | 29.2 | 30.5 -4% | 28.4 3% | 28.3 3% | 30 -3% | 31.8 -9% |
| Idle Minimum * | 29.2 | 30.5 -4% | 29 1% | 28.3 3% | 32.5 -11% | 31.8 -9% |
| Idle Average * | 29.2 | 30.5 -4% | 29 1% | 28.3 3% | 32.5 -11% | 32.1 -10% |
| Idle Maximum * | 29.2 | 30.9 -6% | 32.2 -10% | 28.3 3% | 32.5 -11% | 32.1 -10% |
| Load Average * | 32.5 | 35.7 -10% | 47.1 -45% | 38.3 -18% | 38.7 -19% | 33 -2% |
| Load Maximum * | 37.2 | 35.6 4% | 47.1 -27% | 38.3 -3% | 32.5 13% | 34.8 6% |
| Witcher 3 ultra * | 52 |
* ... smaller is better
(±) The maximum temperature on the upper side is 41.4 °C / 107 F, compared to the average of 36.9 °C / 98 F, ranging from 21.1 to 71 °C for the class Multimedia.
(+) The bottom heats up to a maximum of 39.4 °C / 103 F, compared to the average of 39.2 °C / 103 F
(+) In idle usage, the average temperature for the upper side is 23 °C / 73 F, compared to the device average of 31.3 °C / 88 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 24.2 °C / 75.6 F and are therefore cool to the touch.
(+) The average temperature of the palmrest area of similar devices was 28.8 °C / 83.8 F (+4.6 °C / 8.2 F).
LG Gram 15Z975 audio analysis
(-) | not very loud speakers (71.9 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 28.2% lower than median
(+) | bass is linear (2.6% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | reduced mids - on average 7.6% lower than median
(-) | mids are not linear (18.4% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 9.8% higher than median
(±) | linearity of highs is average (9.4% delta to prev. frequency)
Overall 100 - 16.000 Hz
(-) | overall sound is not linear (42.9% difference to median)
Compared to same class
» 99% of all tested devices in this class were better, 0% similar, 0% worse
» The best had a delta of 5%, average was 18%, worst was 45%
Compared to all devices tested
» 95% of all tested devices were better, 0% similar, 5% worse
» The best had a delta of 4%, average was 25%, worst was 134%
Apple MacBook 12 (Early 2016) 1.1 GHz audio analysis
(+) | speakers can play relatively loud (83.6 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 11.3% lower than median
(±) | linearity of bass is average (14.2% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 2.4% away from median
(+) | mids are linear (5.5% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 2% away from median
(+) | highs are linear (4.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(+) | overall sound is linear (10.2% difference to median)
Compared to same class
» 6% of all tested devices in this class were better, 2% similar, 92% worse
» The best had a delta of 5%, average was 19%, worst was 53%
Compared to all devices tested
» 4% of all tested devices were better, 1% similar, 95% worse
» The best had a delta of 4%, average was 25%, worst was 134%
| desligado | 0.18 / 0.42 Watt |
| Ocioso | 4.4 / 9.1 / 9.6 Watt |
| Carga |
34.8 / 36 Watt |
   
| |
Key:
min: ,
med: ,
max: Metrahit Energy | |
| LG Gram 15Z975 i5-8250U, UHD Graphics 620, SK Hynix HFS256G39TND-N210A, IPS, 1920x1080, 15.6" | Acer Swift 3 SF315-51G-57E5 i5-8250U, GeForce MX150, Hynix HFS128G39TND, IPS, 1920x1080, 15.6" | Samsung Notebook 9 NP900X5N-X01US i7-7500U, GeForce 940MX, Samsung PM961 MZVLW256HEHP, IPS, 1920x1080, 15" | HP Envy 15-as133cl i7-7500U, HD Graphics 620, HGST Travelstar 5K1000 HTS541010A7E630, IPS, 1920x1080, 15.6" | HP Envy x360 15m-bq121dx R5 2500U, Vega 8, HGST Travelstar 7K1000 HTS721010A9E630, IPS, 1920x1080, 15.6" | Apple MacBook Pro 15 2017 (2.9 GHz, 560) i7-7820HQ, Radeon Pro 560, , , 2880x1800, 15.4" | |
|---|---|---|---|---|---|---|
| Power Consumption | -12% | -32% | 16% | -21% | -73% | |
| Idle Minimum * | 4.4 | 3.8 14% | 5 -14% | 4.6 -5% | 5.9 -34% | 3.7 16% |
| Idle Average * | 9.1 | 6.5 29% | 11.6 -27% | 7.7 15% | 8.7 4% | 16.2 -78% |
| Idle Maximum * | 9.6 | 9.1 5% | 12.2 -27% | 7.8 19% | 10.5 -9% | 18 -88% |
| Load Average * | 34.8 | 53.4 -53% | 47.8 -37% | 30.5 12% | 45.7 -31% | 58.4 -68% |
| Load Maximum * | 36 | 55.6 -54% | 55.7 -55% | 22.7 37% | 49.4 -37% | 89.6 -149% |
| Witcher 3 ultra * | 51.9 | 45.8 |
* ... smaller is better
| LG Gram 15Z975 i5-8250U, UHD Graphics 620, 60 Wh | Acer Swift 3 SF315-51G-57E5 i5-8250U, GeForce MX150, 49.7 Wh | Dell XPS 15 9560 (i7-7700HQ, UHD) i7-7700HQ, GeForce GTX 1050 Mobile, 97 Wh | Samsung Notebook 9 NP900X5N-X01US i7-7500U, GeForce 940MX, 66 Wh | Dell Inspiron 15 7570 i5-8550U, GeForce 940MX, 42 Wh | HP Envy 15-as133cl i7-7500U, HD Graphics 620, 52 Wh | |
|---|---|---|---|---|---|---|
| Battery Runtime | 17% | -15% | 27% | -63% | -33% | |
| Reader / Idle | 1078 | 831 -23% | 1642 52% | 280 -74% | 573 -47% | |
| WiFi v1.3 | 435 | 511 17% | 434 0% | 604 39% | 105 -76% | 408 -6% |
| Load | 131 | 103 -21% | 116 -11% | 80 -39% | 72 -45% |
Pro
Contra
Semelhante à forma como o "portátil mais fino do mundo" deve sacrificar certos aspectos do design para alcançar o impulso de marketing desejado, o "Ultrabook mais leve do mundo" traz seu próprio conjunto de inconvenientes únicos. O LG Gram 15 pode ser incrivelmente leve, mas os proprietários estarão desistindo de uma lista de recursos que, de outra forma, estariam presentes em Ultrabooks de "peso padrão".
A desvantagem mais notável é o chassi fraco. A tela com marcos finos não possui reforço de um painel de vidro de ponta a ponta e, portanto, é muito flexível em comparação com a maioria dos Ultrabooks. A base da liga de magnésio é fina e oca em comparação com o esqueleto grosso e pesado do XPS 15. Esses cortes reduzem o peso total do sistema ao custo da rigidez.
Na frente de desempenho, não há opções discretas de GPU e o processador não consegue manter o máximo Turbo Boost por muito tempo. Outros contratempos aparecem sem relação com o baixo peso do sistema, como a luz de fundo relativamente fraca, as dobradiças médias, teclas e trackpad suaves, localização estranha da câmera e a falta de Thunderbolt 3. Quando tomado como um todo, a experiência da LG Gram se sente mais barata e de menor qualidade em comparação com alternativas mais pesadas e mais sólidas como o XPS 15, Spectre x360 15, ou Yoga 720. O Gram-Z15980 atualizado supostamente aborda muitas dessas questões, mas uma avaliação completa do modelo mais recente será necessária para avaliar as mudanças.
Há alguns pontos que se destacam, apesar das desvantagens. O ruído do ventilador geralmente é baixo, tanto o armazenamento como a RAM são surpreendentemente atualizáveis, há uma quantidade razoável de portas, e o preço de entrada é de algumas centenas de dólares a menos do que os Ultrabooks carros-chefe de concorrentes mais conhecidos. Se um Ultrabook leve de 15 polegadas for uma necessidade, então recomendamos conferir o Samsung Notebook 9 em vez do Gram 15Z975 dado que o Samsung é quase tão leve quanto e oferece um teclado mais forme e uma tela muito mais brilhante para uma melhor visibilidade em exteriores.
O leve Gram 15 incentiva o uso em exteriores e em viagens frequentes, mas tudo, desde a tela relativamente fraca, teclado esponjoso, posicionamento pobre da webcam e chassis mais frágil, tornam o LG difícil de recomendar.
LG Gram 15Z975
- 01/22/2018 v6 (old)
Allen Ngo
Price comparison
