Notebookcheck

Test: LG Gram 15 (i5-8250U, FHD) Laptop (Sammanfattning)

Allen Ngo (översatt av Daniel Eriksson), 01/25/2018

Väger hälften så mycket som XPS 15. Hur lätt kan en 15-tums laptop bli? LG Gram 15 vågar vara den lättaste i världen på bara straxt över 1 kg, men systemet är inte utan en del funktioner och finesser som finns på dom flesta andra Ultrabook-modeller.

LG Gram 15Z975 (Gram Serie)
Processor
Intel Core i5-8250U
Grafikkort
Intel UHD Graphics 620, Kärna: 300 MHz, Minne: 1200 MHz, DDR4, 22.20.16.4708
Minne
8192 MB 
, 1200 MHz, Enkel-Kanals, 10-10-10-28
Skärm
15.6 tum 16:9, 1920 x 1080 pixlar 141 PPI, Kapacitiv, ID: LGD052A, Name: LG Philips LP156WFA-SPC1, IPS, glansig: ja
Moderkort
Intel Kaby Lake-U iHDCP 2.2 Premium PCH
Hårddisk
SK Hynix HFS256G39TND-N210A, 256 GB 
Ljudkort
Intel Kaby Lake-U/Y PCH - High Definition Audio
Anslutningar
1 USB 2.0, 2 USB 3.0, 1 USB 3.1 Gen2, 1 HDMI, 1 Kensingtonlås, Ljudanslutningar: 3.5 mm hörlur, Kortläsare: MicroSD-läsare, Brightness Sensor
Nätverk
Intel Dual Band Wireless-AC 8265 (a/b/g/n/ac), Bluetooth 4.2
Storlek
höjd x bredd x djup (i mm) 15.2 x 359 x 229
Batteri
60 Wh Litiumpolymer
Operativsystem
Microsoft Windows 10 Home 64 Bit
Camera
Webbkamera: 720p
Primary Camera: 1 MPix
Övrigt
Högtalare: 1 W stereo, Tangentbord: Chiclet, Tangentbordsbelysning: ja, USB Typ-C till RJ-45 adapter, Garantikort, Snabbstartsguide, LG Power Manager, LG On Screen Display, DTS Audio, Reader Mode, 12 Månader Garanti
Vikt
1.09 kg, Strömförsörjning: 318 g
Pris
1100 USD
Länkar

 

Front: No connectivity
Front: No connectivity
Left: AC adapter, USB 3.0, HDMI, USB Type-C Gen. 1
Left: AC adapter, USB 3.0, HDMI, USB Type-C Gen. 1
Rear: No connectivity
Rear: No connectivity
Right: MicroSD reader, 3.5 mm earphones, USB 3.0, USB 2.0, Kensington Lock
Right: MicroSD reader, 3.5 mm earphones, USB 3.0, USB 2.0, Kensington Lock
SDCardreader Transfer Speed
average JPG Copy Test (av. of 3 runs)
Dell XPS 15 9560 (i7-7700HQ, UHD)
 
120.5 MB/s ∼100% +43%
LG Gram 15Z975
 
84.34 MB/s ∼70%
Samsung Notebook 9 NP900X5N-X01US
 
68.72 MB/s ∼57% -19%
maximum AS SSD Seq Read Test (1GB)
Dell XPS 15 9560 (i7-7700HQ, UHD)
 
252.6 MB/s ∼100% +195%
Samsung Notebook 9 NP900X5N-X01US
 
86.49 MB/s ∼34% +1%
LG Gram 15Z975
 
85.57 MB/s ∼34%
Networking
iperf3 Client (receive) TCP 1 m 4M x10
Samsung Notebook 9 NP900X5N-X01US
Intel Dual Band Wireless-AC 8265
668 MBit/s ∼100% +5%
Dell XPS 15 9560 (i7-7700HQ, UHD)
Killer Wireless-n/a/ac 1535 Wireless Network Adapter
648 MBit/s ∼97% +1%
LG Gram 15Z975
Intel Dual Band Wireless-AC 8265
639 MBit/s ∼96%
iperf3 Client (transmit) TCP 1 m 4M x10
Dell XPS 15 9560 (i7-7700HQ, UHD)
Killer Wireless-n/a/ac 1535 Wireless Network Adapter
529 MBit/s ∼100% +12%
LG Gram 15Z975
Intel Dual Band Wireless-AC 8265
471 MBit/s ∼89%
Samsung Notebook 9 NP900X5N-X01US
Intel Dual Band Wireless-AC 8265
465 MBit/s ∼88% -1%
282.1
cd/m²
282.5
cd/m²
285.6
cd/m²
274.1
cd/m²
273
cd/m²
285
cd/m²
252.9
cd/m²
266.9
cd/m²
284
cd/m²
Distribution av ljusstyrkan
X-Rite i1Basic Pro 2
Max: 285.6 cd/m² Medel: 276.2 cd/m² Minimum: 18.52 cd/m²
Distribution av ljusstyrkan: 89 %
Mitt på batteriet: 273 cd/m²
Kontrast: 1241:1 (Svärta: 0.22 cd/m²)
ΔE Color 4.77 | 0.8-29.43 Ø6.4
ΔE Greyscale 8.6 | 0.64-98 Ø6.6
76.9% sRGB (Argyll) 50.2% AdobeRGB 1998 (Argyll)
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
Response Times
-22%
-58%
-22%
-22%
-29%
Response Time Grey 50% / Grey 80% *
35.2 (19.6, 15.6)
42 (22, 20)
-19%
57.2 (27.2, 30)
-63%
40.8 (20.4, 20.4)
-16%
44.4 (16, 28.4)
-26%
45 (23, 22)
-28%
Response Time Black / White *
25.6 (14.8, 10.8)
32 (17, 15)
-25%
39.2 (23.6, 15.6)
-53%
32.4 (17.6, 14.8)
-27%
30 (6.4, 23.6)
-17%
33 (18, 15)
-29%
PWM Frequency
21000 (80)
961.5
208.3 (99)
1000 (99)
996 (90)
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 DeltaE2000 *
4.77
4.98
-4%
5.3
-11%
2
58%
5
-5%
4.74
1%
Colorchecker DeltaE2000 max. *
10.76
8.41
22%
9.9
8%
5
54%
20.6
-91%
7.68
29%
Greyscale DeltaE2000 *
8.6
4.26
50%
4.6
47%
2.5
71%
3.2
63%
3.44
60%
Gamma
1.7 141%
2.37 101%
2.31 104%
2.21 109%
2.45 98%
2.43 99%
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)
-12% / -5%
-23% / 1%
4% / 21%
-17% / -13%
-11% / 2%

* ... smaller is better

Display Response Times

Display response times show how fast the screen is able to change from one color to the next. Slow response times can lead to afterimages and can cause moving objects to appear blurry (ghosting). Gamers of fast-paced 3D titles should pay special attention to fast 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 0.8 (minimum) to 240 (maximum) ms. » 42 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (26.2 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 0.9 (minimum) to 636 (maximum) ms. » 25 % of all devices are better.
This means that the measured response time is better than the average of all tested devices (41.9 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

To dim the screen, some notebooks will simply cycle the backlight on and off in rapid succession - a method called Pulse Width Modulation (PWM) . This cycling frequency should ideally be undetectable to the human eye. If said frequency is too low, users with sensitive eyes may experience strain or headaches or even notice the flickering altogether.
Screen flickering / PWM not detected

In comparison: 54 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 10287 (minimum: 43 - maximum: 588200) Hz was measured.

 
0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350360370380390400410420430440450460470480490500510520530540Tooltip
Cinebench R15 CPU Multi 64 Bit
Cinebench R15
CPU Single 64Bit
Microsoft Surface Book 2
Intel Core i7-8650U
177 Points ∼86% +24%
Razer Blade Stealth QHD i7-8550U
Intel Core i7-8550U
164 Points ∼80% +15%
Gigabyte Aero 15X
Intel Core i7-7700HQ
161 Points ∼79% +13%
Microsoft Surface Laptop i7
Intel Core i7-7660U
154 Points ∼75% +8%
Lenovo ThinkPad 25
Intel Core i7-7500U
146 Points ∼71% +2%
HP ProBook 470 G5
Intel Core i5-8250U
144 Points ∼70% +1%
LG Gram 15Z975
Intel Core i5-8250U
143 Points ∼70%
HP Envy x360 15m-bq121dx
AMD Ryzen 5 2500U
137 Points ∼67% -4%
Dell Inspiron 15 7000 7577
Intel Core i5-7300HQ
131 Points ∼64% -8%
Dell Latitude 5280
Intel Core i5-7200U
129 Points ∼63% -10%
Xiaomi Mi Notebook Air 13.3 2016
Intel Core i5-6200U
118 Points ∼58% -17%
HP 250 G4 T6P08ES
Intel Core i5-5200U
108 Points ∼53% -24%
CPU Multi 64Bit
Gigabyte Aero 15X
Intel Core i7-7700HQ
742 Points ∼35% +43%
Microsoft Surface Book 2
Intel Core i7-8650U
673 Points ∼31% +30%
HP ProBook 470 G5
Intel Core i5-8250U
603 Points ∼28% +16%
HP Envy x360 15m-bq121dx
AMD Ryzen 5 2500U
574 Points ∼27% +11%
Razer Blade Stealth QHD i7-8550U
Intel Core i7-8550U
521 Points ∼24% 0%
LG Gram 15Z975
Intel Core i5-8250U
519 Points ∼24%
Dell Inspiron 15 7000 7577
Intel Core i5-7300HQ
514 Points ∼24% -1%
Microsoft Surface Laptop i7
Intel Core i7-7660U
397 (min: 337, max: 397) Points ∼18% -24%
Lenovo ThinkPad 25
Intel Core i7-7500U
367 Points ∼17% -29%
Dell Latitude 5280
Intel Core i5-7200U
328 Points ∼15% -37%
Xiaomi Mi Notebook Air 13.3 2016
Intel Core i5-6200U
294 Points ∼14% -43%
HP 250 G4 T6P08ES
Intel Core i5-5200U
257 Points ∼12% -50%
Cinebench R11.5
CPU Single 64Bit
Microsoft Surface Book 2
Intel Core i7-8650U
2.01 Points ∼86% +23%
Razer Blade Stealth QHD i7-8550U
Intel Core i7-8550U
1.88 Points ∼81% +15%
Microsoft Surface Laptop i7
Intel Core i7-7660U
1.84 Points ∼79% +13%
Gigabyte Aero 15X
Intel Core i7-7700HQ
1.84 Points ∼79% +13%
HP ProBook 470 G5
Intel Core i5-8250U
1.65 Points ∼71% +1%
LG Gram 15Z975
Intel Core i5-8250U
1.63 Points ∼70%
Lenovo ThinkPad 25
Intel Core i7-7500U
1.61 Points ∼69% -1%
HP Envy x360 15m-bq121dx
AMD Ryzen 5 2500U
1.53 Points ∼66% -6%
Dell Inspiron 15 7000 7577
Intel Core i5-7300HQ
1.52 Points ∼65% -7%
Dell Latitude 5280
Intel Core i5-7200U
1.47 Points ∼63% -10%
HP 250 G4 T6P08ES
Intel Core i5-5200U
1.28 Points ∼55% -21%
Xiaomi Mi Notebook Air 13.3 2016
Intel Core i5-6200U
1.21 Points ∼52% -26%
CPU Multi 64Bit
Gigabyte Aero 15X
Intel Core i7-7700HQ
8.21 Points ∼34% +42%
Microsoft Surface Book 2
Intel Core i7-8650U
7.24 Points ∼30% +25%
HP ProBook 470 G5
Intel Core i5-8250U
6.75 Points ∼28% +17%
HP Envy x360 15m-bq121dx
AMD Ryzen 5 2500U
6.46 Points ∼27% +12%
Razer Blade Stealth QHD i7-8550U
Intel Core i7-8550U
6.28 Points ∼26% +8%
Dell Inspiron 15 7000 7577
Intel Core i5-7300HQ
5.92 Points ∼25% +2%
LG Gram 15Z975
Intel Core i5-8250U
5.79 Points ∼24%
Microsoft Surface Laptop i7
Intel Core i7-7660U
4.39 Points ∼18% -24%
Dell Latitude 5280
Intel Core i5-7200U
3.67 Points ∼15% -37%
Lenovo ThinkPad 25
Intel Core i7-7500U
3.4 Points ∼14% -41%
Xiaomi Mi Notebook Air 13.3 2016
Intel Core i5-6200U
3.23 Points ∼14% -44%
HP 250 G4 T6P08ES
Intel Core i5-5200U
2.81 Points ∼12% -51%
Cinebench R10
Rendering Single 32Bit
Microsoft Surface Book 2
Intel Core i7-8650U
6531 Points ∼60% +19%
Razer Blade Stealth QHD i7-8550U
Intel Core i7-8550U
6183 Points ∼57% +13%
Microsoft Surface Laptop i7
Intel Core i7-7660U
6126 Points ∼57% +12%
Gigabyte Aero 15X
Intel Core i7-7700HQ
5952 Points ∼55% +9%
Lenovo ThinkPad 25
Intel Core i7-7500U
5595 Points ∼52% +2%
HP ProBook 470 G5
Intel Core i5-8250U
5560 Points ∼51% +1%
LG Gram 15Z975
Intel Core i5-8250U
5480 Points ∼51%
Dell Inspiron 15 7000 7577
Intel Core i5-7300HQ
5433 Points ∼50% -1%
Dell Latitude 5280
Intel Core i5-7200U
4999 Points ∼46% -9%
HP 250 G4 T6P08ES
Intel Core i5-5200U
4134 Points ∼38% -25%
HP Envy x360 15m-bq121dx
AMD Ryzen 5 2500U
4103 Points ∼38% -25%
Rendering Multiple CPUs 32Bit
Gigabyte Aero 15X
Intel Core i7-7700HQ
22380 Points ∼45% +32%
Microsoft Surface Book 2
Intel Core i7-8650U
21455 Points ∼43% +27%
HP ProBook 470 G5
Intel Core i5-8250U
19724 Points ∼40% +16%
Dell Inspiron 15 7000 7577
Intel Core i5-7300HQ
17971 Points ∼36% +6%
LG Gram 15Z975
Intel Core i5-8250U
16942 Points ∼34%
Razer Blade Stealth QHD i7-8550U
Intel Core i7-8550U
16554 Points ∼33% -2%
HP Envy x360 15m-bq121dx
AMD Ryzen 5 2500U
14400 Points ∼29% -15%
Microsoft Surface Laptop i7
Intel Core i7-7660U
13779 Points ∼28% -19%
Lenovo ThinkPad 25
Intel Core i7-7500U
12799 Points ∼26% -24%
Dell Latitude 5280
Intel Core i5-7200U
11292 Points ∼23% -33%
HP 250 G4 T6P08ES
Intel Core i5-5200U
8672 Points ∼17% -49%
wPrime 2.0x - 1024m
Lenovo ThinkPad 25
Intel Core i7-7500U
473.575 s * ∼6% -58%
Dell Latitude 5280
Intel Core i5-7200U
467.287 s * ∼6% -56%
Microsoft Surface Laptop i7
Intel Core i7-7660U
433 s * ∼5% -45%
Razer Blade Stealth QHD i7-8550U
Intel Core i7-8550U
338.4 s * ∼4% -13%
Dell Inspiron 15 7000 7577
Intel Core i5-7300HQ
331.085 s * ∼4% -11%
LG Gram 15Z975
Intel Core i5-8250U
299.068 s * ∼4%
HP Envy x360 15m-bq121dx
AMD Ryzen 5 2500U
251.078 s * ∼3% +16%
Super Pi Mod 1.5 XS 32M - ---
HP Envy x360 15m-bq121dx
AMD Ryzen 5 2500U
684.933 Seconds * ∼3% -9%
Dell Latitude 5280
Intel Core i5-7200U
655.742 Seconds * ∼3% -4%
Dell Inspiron 15 7000 7577
Intel Core i5-7300HQ
654.006 Seconds * ∼3% -4%
LG Gram 15Z975
Intel Core i5-8250U
630.784 Seconds * ∼3%
Lenovo ThinkPad 25
Intel Core i7-7500U
594.092 Seconds * ∼3% +6%
Microsoft Surface Book 2
Intel Core i7-8650U
505.9 Seconds * ∼2% +20%

* ... smaller is better

Cinebench R10 Shading 32Bit
8722
Cinebench R10 Rendering Multiple CPUs 32Bit
16942
Cinebench R10 Rendering Single 32Bit
5480
Cinebench R11.5 OpenGL 64Bit
41.11 fps
Cinebench R11.5 CPU Multi 64Bit
5.79 Points
Cinebench R11.5 CPU Single 64Bit
1.63 Points
Cinebench R15 Ref. Match 64Bit
97.8 %
Cinebench R15 OpenGL 64Bit
43.45 fps
Cinebench R15 CPU Multi 64Bit
519 Points
Cinebench R15 CPU Single 64Bit
143 Points
Hjälp
PCMark 10 - Score
Dell Inspiron 15 7000 7577
GeForce GTX 1060 Max-Q, 7300HQ, Samsung PM961 MZVLW256HEHP
4406 Points ∼57% +30%
Microsoft Surface Book 2
GeForce GTX 1050 (Notebook), 8650U, Samsung PM961 MZVLW256HEHP
4119 (min: 4106, max: 4190) Points ∼53% +21%
Acer Swift 3 SF315-51G-57E5
GeForce MX150, 8250U, Hynix HFS128G39TND
3802 Points ∼49% +12%
LG Gram 15Z975
UHD Graphics 620, 8250U, SK Hynix HFS256G39TND-N210A
3391 Points ∼44%
Lenovo ThinkPad 25
GeForce 940MX, 7500U, Samsung SM961 MZVKW512HMJP m.2 PCI-e
3035 Points ∼39% -10%
HP Envy x360 15m-bq121dx
Vega 8, 2500U, HGST Travelstar 7K1000 HTS721010A9E630
2814 Points ∼36% -17%
PCMark 8 Home Score Accelerated v2
3557 poäng
PCMark 8 Creative Score Accelerated v2
4651 poäng
PCMark 8 Work Score Accelerated v2
4736 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 NVMe SSD
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
179.79
112.33
-38%
539.5
200%
648.34
261%
Copy Program MB/s
141.2
97.89
-31%
411.54
191%
497.88
253%
Copy ISO MB/s
197.53
130.26
-34%
1272.4
544%
1684.56
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
246.71
114.09
-54%
788.85
220%
673.57
173%
40.26
-84%
4K-64 Read
366.5
355.32
-3%
961.61
162%
1708.65
366%
736.09
101%
4K Write
67.57
77.46
15%
112.15
66%
124.12
84%
1
-99%
4K Read
26.24
29.84
14%
41.34
58%
48.71
86%
44.3
69%
Seq Write
248.48
124.01
-50%
1206.58
386%
1298.57
423%
271.55
9%
Seq Read
488.13
514.68
5%
2026.09
315%
2533.21
419%
1800.26
269%

* ... smaller is better

SK Hynix HFS256G39TND-N210A
CDM 5/6 Read Seq Q32T1: 555.2 MB/s
CDM 5/6 Write Seq Q32T1: 264.4 MB/s
CDM 5/6 Read 4K Q32T1: 314.3 MB/s
CDM 5/6 Write 4K Q32T1: 264.6 MB/s
CDM 5 Read Seq: 463.9 MB/s
CDM 5 Write Seq: 264.4 MB/s
CDM 5/6 Read 4K: 22.86 MB/s
CDM 5/6 Write 4K: 89.06 MB/s
3DMark 11
1280x720 Performance Combined
HP Envy x360 15m-bq121dx
AMD Radeon RX Vega 8, 2500U
2918 Points ∼17% +131%
Microsoft Surface Laptop i7
Intel Iris Plus Graphics 640, 7660U
1968 Points ∼11% +56%
Microsoft Surface Laptop i7
Intel Iris Plus Graphics 640, 7660U
1800 Points ∼10% +42%
HP ProBook 470 G5
NVIDIA GeForce 930MX, 8250U
1888 Points ∼11% +49%
Razer Blade Stealth QHD i7-8550U
Intel UHD Graphics 620, 8550U
1681 Points ∼10% +33%
Asus Transformer 4 Pro (i7-7500U, HD620)
Intel HD Graphics 620, 7500U
1370 Points ∼8% +8%
LG Gram 15Z975
Intel UHD Graphics 620, 8250U
1265 Points ∼7%
Acer TravelMate P257-M-56AX
Intel HD Graphics 5500, 5200U
1248 Points ∼7% -1%
HP 250 G5 SP X0N33EA
Intel HD Graphics 520, 6200U
1196 Points ∼7% -5%
Teclast Tbook 16 Power
Intel HD Graphics 405 (Braswell), Z8750
363 Points ∼2% -71%
1280x720 Performance GPU
HP Envy x360 15m-bq121dx
AMD Radeon RX Vega 8, 2500U
3602 Points ∼7% +137%
Microsoft Surface Laptop i7
Intel Iris Plus Graphics 640, 7660U
2401 Points ∼5% +58%
Microsoft Surface Laptop i7
Intel Iris Plus Graphics 640, 7660U
1980 Points ∼4% +31%
HP ProBook 470 G5
NVIDIA GeForce 930MX, 8250U
2376 Points ∼5% +57%
Razer Blade Stealth QHD i7-8550U
Intel UHD Graphics 620, 8550U
1675 Points ∼3% +10%
LG Gram 15Z975
Intel UHD Graphics 620, 8250U
1517 Points ∼3%
Asus Transformer 4 Pro (i7-7500U, HD620)
Intel HD Graphics 620, 7500U
1419 Points ∼3% -6%
HP 250 G5 SP X0N33EA
Intel HD Graphics 520, 6200U
1257 Points ∼2% -17%
Acer TravelMate P257-M-56AX
Intel HD Graphics 5500, 5200U
1147 Points ∼2% -24%
Teclast Tbook 16 Power
Intel HD Graphics 405 (Braswell), Z8750
408 Points ∼1% -73%
3DMark
1920x1080 Fire Strike Graphics
HP Envy x360 15m-bq121dx
AMD Radeon RX Vega 8, 2500U
2460 Points ∼6% +167%
HP ProBook 470 G5
NVIDIA GeForce 930MX, 8250U
1660 Points ∼4% +80%
Microsoft Surface Laptop i7
Intel Iris Plus Graphics 640, 7660U
1315 Points ∼3% +42%
LG Gram 15Z975
Intel UHD Graphics 620, 8250U
923 Points ∼2%
Asus Transformer 4 Pro (i7-7500U, HD620)
Intel HD Graphics 620, 7500U
328 Points ∼1% -64%
1280x720 Cloud Gate Standard Graphics
HP Envy x360 15m-bq121dx
AMD Radeon RX Vega 8, 2500U
16285 Points ∼9% +110%
Microsoft Surface Laptop i7
Intel Iris Plus Graphics 640, 7660U
10486 Points ∼6% +35%
Razer Blade Stealth QHD i7-8550U
Intel UHD Graphics 620, 8550U
9349 Points ∼5% +20%
HP ProBook 470 G5
NVIDIA GeForce 930MX, 8250U
9050 Points ∼5% +17%
Asus Transformer 4 Pro (i7-7500U, HD620)
Intel HD Graphics 620, 7500U
7894 Points ∼4% +2%
LG Gram 15Z975
Intel UHD Graphics 620, 8250U
7760 Points ∼4%
Acer TravelMate P257-M-56AX
Intel HD Graphics 5500, 5200U
6590 Points ∼4% -15%
HP 250 G5 SP X0N33EA
Intel HD Graphics 520, 6200U
6314 Points ∼3% -19%
Teclast Tbook 16 Power
Intel HD Graphics 405 (Braswell), Z8750
1767 Points ∼1% -77%
1920x1080 Ice Storm Extreme Graphics
HP ProBook 470 G5
NVIDIA GeForce 930MX, 8250U
59831 Points ∼8% +48%
LG Gram 15Z975
Intel UHD Graphics 620, 8250U
40357 Points ∼6%
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) 4928237.5fps
Rise of the Tomb Raider (2016) 1710fps

Ljudnivå

Låg belastning
29.2 / 29.2 / 29.2 dB(A)
Hög belastning
32.5 / 37.2 dB(A)
  red to green bar
 
 
30 dB
tyst
40 dB(A)
hörbar
50 dB(A)
högt ljud
 
min: dark, med: mid, max: light   Audix TM1, Arta (15 cm avstånd)   environment noise: 29.2 dB(A)
LG Gram 15Z975
UHD Graphics 620, 8250U, SK Hynix HFS256G39TND-N210A
Acer Swift 3 SF315-51G-57E5
GeForce MX150, 8250U, Hynix HFS128G39TND
Dell XPS 15 9560 (i7-7700HQ, UHD)
GeForce GTX 1050 (Notebook), 7700HQ, Lite-on CX2-8B512-Q11 NVMe SSD
Samsung Notebook 9 NP900X5N-X01US
GeForce 940MX, 7500U, Samsung PM961 MZVLW256HEHP
HP Envy 15-as133cl
HD Graphics 620, 7500U, HGST Travelstar 5K1000 HTS541010A7E630
Acer Swift 3 SF315-41-R4W1
Vega 8, 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

Hög belastning
 30.8 °C41.4 °C27.2 °C 
 26.8 °C34 °C22 °C 
 22.6 °C24.2 °C21.8 °C 
Max: 41.4 °C
Medel: 27.9 °C
29.6 °C39.4 °C34.2 °C
26.4 °C30 °C31 °C
25 °C27.4 °C28.2 °C
Max: 39.4 °C
Medel: 30.1 °C
Strömförsörjning (max.)  43 °C | Rumstemperatur 20 °C | Fluke 62 Mini IR Thermometer
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2037.238.42534.233.63130.932.84031.332.95032.934.6633031.98030.631.610029.729.512527.528.516026.727.120026.327.22502527.431525.427.740024.633.450023.340.663023.646.98002356.1100022.962.1125022.757.6160022.953.3200022.759250022.660.3315022.560.8400022.568.4500022.771.9630022.770.7800022.666.41000022.662.91250022.859.61600022.846.4SPL3577.4N2.332.7median 22.9LG Gram 15Z975median 56.1Delta1.312.935.335.132.931.831.83236.535.132.428.93328.936.328.848.32761.52752.924.860.92462.822.763.32269.521.267.82174.82075.919.472.718.97117.770.117.86917.671.817.668.117.671.417.673.717.670.417.571.617.671.617.669.617.459.717.583.630.662.51.5median 69.6Apple MacBook 12 (Early 2016) 1.1 GHzmedian 17.84.62.4hearing rangehide median Pink Noise
LG Gram 15Z975 audio analysis

(-) | not very loud speakers (71.92 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 (40.7% difference to median)
Compared to same class
» 99% of all tested devices in this class were better, 1% similar, 0% worse
» The best had a delta of 3%, average was 18%, worst was 41%
Compared to all devices tested
» 98% of all tested devices were better, 1% similar, 1% worse
» The best had a delta of 3%, average was 21%, worst was 53%

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 (9.3% difference to median)
Compared to same class
» 1% of all tested devices in this class were better, 1% similar, 98% worse
» The best had a delta of 9%, average was 19%, worst was 47%
Compared to all devices tested
» 1% of all tested devices were better, 0% similar, 98% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Strömförbrukning
Av/Standbydarklight 0.18 / 0.42 Watt
Låg belastningdarkmidlight 4.4 / 9.1 / 9.6 Watt
Hög belastning midlight 34.8 / 36 Watt
 color bar
Förklaring: min: dark, med: mid, max: light        Metrahit Energy
LG Gram 15Z975
8250U, UHD Graphics 620, SK Hynix HFS256G39TND-N210A, IPS, 1920x1080, 15.6
Acer Swift 3 SF315-51G-57E5
8250U, GeForce MX150, Hynix HFS128G39TND, IPS, 1920x1080, 15.6
Samsung Notebook 9 NP900X5N-X01US
7500U, GeForce 940MX, Samsung PM961 MZVLW256HEHP, IPS, 1920x1080, 15
HP Envy 15-as133cl
7500U, HD Graphics 620, HGST Travelstar 5K1000 HTS541010A7E630, IPS, 1920x1080, 15.6
HP Envy x360 15m-bq121dx
2500U, Vega 8, HGST Travelstar 7K1000 HTS721010A9E630, IPS, 1920x1080, 15.6
Apple MacBook Pro 15 2017 (2.9 GHz, 560)
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

Batteritid
Låg belastning (utan WLAN, min. ljusstyrka)
17tim 58min
NBC WiFi Websurfing Battery Test 1.3
7tim 15min
Hög belastning (maximal ljusstyrka)
2tim 11min
LG Gram 15Z975
8250U, UHD Graphics 620, 60 Wh
Acer Swift 3 SF315-51G-57E5
8250U, GeForce MX150, 49.7 Wh
Dell XPS 15 9560 (i7-7700HQ, UHD)
7700HQ, GeForce GTX 1050 (Notebook), 97 Wh
Samsung Notebook 9 NP900X5N-X01US
7500U, GeForce 940MX, 66 Wh
Dell Inspiron 15-7570
8550U, GeForce 940MX, 42 Wh
HP Envy 15-as133cl
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

+ bra utbud av portar; HDMI, USB Typ-A, USB Typ-C, MicroSD-läsare
+ utökningsbart RAM och M.2 2280-lagring
+ tunn infattning, design i magnesium-legering
+ skarp IPS-skärm, djup kontrast
+ relativt tyst fläktljud
+ väldigt låg vikt

Emot

- påtvingad glansig skärm; inga alternativ för högre upplösning
- väldigt böjligt lock och bas; ger ett ömtåligt intryck
- ingen Thunderbolt 3 (endast Gram 15975 SKU)
- svaga högtalare och svag basåtergivning
- medelmåttig synlighet utomhus, mycket glans
- ostadig Turbo Boost-prestanda
- inget sida-till-sida skydd för glaset
- dålig gamma på färgerna efter uppackning
- knapparna på tangentbordet kunde varit fastare
- mjuk styrplatta, svag återkoppling
- medelmåttig ljusstyrka
- besvärlig kameraplacering
- ingen SD-läsare i full storlek
- gångjärnet kunde varit fastare
- väldigt långsam laddning
- inga dGPU-alternativ
In review: LG Gram 15Z975
In review: LG Gram 15Z975

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
Allen Ngo

Design
66 / 98 → 67%
Tangentbord
71%
Mus
81%
Anslutningar
49 / 81 → 61%
Vikt
74 / 20-67 → 100%
Batteri
89%
Skärm
78%
Spelprestanda
56 / 85 → 66%
Programprestanda
86 / 92 → 93%
Temperatur
94%
Ljudnivå
95 / 95 → 100%
Audio
40%
Camera
37 / 85 → 43%
Medel
71%
78%
Multimedia - Vägt medel

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> Bärbara datorer, laptops - tester och nyheter > Tester > Test: LG Gram 15 (i5-8250U, FHD) Laptop (Sammanfattning)
Allen Ngo, 2018-01-25 (Update: 2018-01-25)