Test: LG Gram 15 (i5-8250U, FHD) Laptop (Sammanfattning)
| 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 | |
| |||||||||||||||||||||||||
Distribution av ljusstyrkan: 89 %
Mitt på batteriet: 273 cd/m²
Kontrast: 1241:1 (Svärta: 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. | |||
| Cinebench R15 | |
| CPU Single 64Bit | |
| Microsoft Surface Book 2 | |
| Razer Blade Stealth QHD i7-8550U | |
| Gigabyte Aero 15X | |
| Microsoft Surface Laptop i7 | |
| Lenovo ThinkPad 25 | |
| HP ProBook 470 G5 | |
| LG Gram 15Z975 | |
| HP Envy x360 15m-bq121dx | |
| Dell Inspiron 15 7000 7577 | |
| Dell Latitude 5280 | |
| Xiaomi Mi Notebook Air 13.3 2016 | |
| HP 250 G4 T6P08ES | |
| CPU Multi 64Bit | |
| Gigabyte Aero 15X | |
| Microsoft Surface Book 2 | |
| HP ProBook 470 G5 | |
| HP Envy x360 15m-bq121dx | |
| LG Gram 15Z975 | |
| Razer Blade Stealth QHD i7-8550U | |
| Dell Inspiron 15 7000 7577 | |
| Microsoft Surface Laptop i7 | |
| Lenovo ThinkPad 25 | |
| Dell Latitude 5280 | |
| Xiaomi Mi Notebook Air 13.3 2016 | |
| HP 250 G4 T6P08ES | |
| Cinebench R11.5 | |
| CPU Single 64Bit | |
| Microsoft Surface Book 2 | |
| Razer Blade Stealth QHD i7-8550U | |
| Microsoft Surface Laptop i7 | |
| Gigabyte Aero 15X | |
| HP ProBook 470 G5 | |
| LG Gram 15Z975 | |
| Lenovo ThinkPad 25 | |
| HP Envy x360 15m-bq121dx | |
| Dell Inspiron 15 7000 7577 | |
| Dell Latitude 5280 | |
| HP 250 G4 T6P08ES | |
| Xiaomi Mi Notebook Air 13.3 2016 | |
| CPU Multi 64Bit | |
| Gigabyte Aero 15X | |
| Microsoft Surface Book 2 | |
| HP ProBook 470 G5 | |
| HP Envy x360 15m-bq121dx | |
| Razer Blade Stealth QHD i7-8550U | |
| Dell Inspiron 15 7000 7577 | |
| LG Gram 15Z975 | |
| Microsoft Surface Laptop i7 | |
| Dell Latitude 5280 | |
| Lenovo ThinkPad 25 | |
| Xiaomi Mi Notebook Air 13.3 2016 | |
| HP 250 G4 T6P08ES | |
| Cinebench R10 | |
| Rendering Multiple CPUs 32Bit | |
| Gigabyte Aero 15X | |
| Microsoft Surface Book 2 | |
| HP ProBook 470 G5 | |
| Dell Inspiron 15 7000 7577 | |
| LG Gram 15Z975 | |
| Razer Blade Stealth QHD i7-8550U | |
| HP Envy x360 15m-bq121dx | |
| Microsoft Surface Laptop i7 | |
| Lenovo ThinkPad 25 | |
| Dell Latitude 5280 | |
| HP 250 G4 T6P08ES | |
| Rendering Single 32Bit | |
| Microsoft Surface Book 2 | |
| Razer Blade Stealth QHD i7-8550U | |
| Microsoft Surface Laptop i7 | |
| Gigabyte Aero 15X | |
| Lenovo ThinkPad 25 | |
| HP ProBook 470 G5 | |
| LG Gram 15Z975 | |
| Dell Inspiron 15 7000 7577 | |
| Dell Latitude 5280 | |
| HP 250 G4 T6P08ES | |
| HP Envy x360 15m-bq121dx | |
| 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 poäng | |
| PCMark 8 Creative Score Accelerated v2 | 4651 poäng | |
| PCMark 8 Work Score Accelerated v2 | 4736 poäng | |
| PCMark 10 Score | 3391 poäng | |
Hjälp | ||
| 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 poäng | |
| 3DMark Ice Storm Standard Score | 52051 poäng | |
| 3DMark Cloud Gate Standard Score | 7121 poäng | |
| 3DMark Fire Strike Score | 864 poäng | |
Hjälp | ||
| låg | med. | hög | ultra | |
|---|---|---|---|---|
| BioShock Infinite (2013) | 49 | 28 | 23 | 7.5 |
| Rise of the Tomb Raider (2016) | 17 | 10 |
Ljudnivå
| Låg belastning |
| 29.2 / 29.2 / 29.2 dB(A) |
| Hög belastning |
| 32.5 / 37.2 dB(A) |
 | ||
30 dB tyst 40 dB(A) hörbar 50 dB(A) högt ljud |
||
min:  , med:  , max:  Audix TM1, Arta (15 cm avstånd) 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%
| Av/Standby | 0.18 / 0.42 Watt |
| Låg belastning | 4.4 / 9.1 / 9.6 Watt |
| Hög belastning |
34.8 / 36 Watt |
   
| |
Förklaring:
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% |
För
Emot
I likhet med hur "världens tunnaste laptop" måste offra en del aspekter av sin design för att nå det önskade marknadsföringspåståendet så kommer "världens lättaste Ultrabook" med sin egen uppsättning unika nackdelar. LG Gram 15 må vara otroligt lätt, men ägaren kommer ge upp en lång lista av funktioner som annars hade varit närvarande på en Ultrabook med "genomsnittlig vikt".
Den tydligaste nackdelen är dess svaga hölje. Den tunnt infattade skärmen saknar förstärkning från en kant-till-kant glaspanel och är därför väldigt böjlig jämfört med dom flesta Ultrabook-modeller. Basen i magnesium-legering känns tunn och ihålig jämfört med det tjocka och bastanta skelettet från XPS 15. Dessa nedskärningar för att minska systemets vikt kommer på bekostnad av rigiditet.
På prestandafronten, det finns inga alternativ för en diskret GPU och processorn kan inte upprätthålla Turbo Boost särskilt länge. Andra nackdelar verkar orelaterade till systemets låga vikt såsom den relativt svaga bakgrundsbelysningen, de medelmåttiga gångjärnen, de mjuka knapparna på tangentbordet och styrplattan, den besvärliga placeringen av kameran och avsaknaden av Thunderbolt 3. Som helhet känns upplevelsen av LG Gram billig och lågkvalitativ jämfört med tyngre och mer gedigna alternativ såsom XPS 15, Spectre x360 15 eller Yoga 720. Den uppdaterade Gram Z15980 löser tydligen många av dom här problemen, men det kommer behövas en full recension av den nyare modellen för att analysera skillnaderna.
Det finns en del ljuspunkter trots nackdelarna. Fläktljudet är för det mesta lågt, både lagring och RAM är förvånansvärt uppgraderingsbara, det finns en ansenlig mängd portar och utgångspriset är några tusen kronor mindre än flaggskepps-modeller från mer välkända konkurrenter. Om en lätt 15-tums Ultrabook är nödvändig så rekommenderar vi en titt på Samsung Notebook 9 istället för Gram 15Z975, då Samsung-modellen är nästan lika lätt men erbjuder ett fastare tangentbord och en mycket mer ljusstark skärm för bättre synlighet utomhus.
Lättviktaren Gram 15 uppmuntrar frekvent resande och användning utomhus, men allt från den relativt svaga skärmen, det svampiga tangentbordet, den dåliga placeringen av webbkameran och det ömtåligare chassit gör det svårt att rekommendera denna LG-modell.
LG Gram 15Z975
- 01/22/2018 v6 (old)
Allen Ngo
Price comparison
