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

Name: LG Gram 15Z975
Brand: LG

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.

Allen Ngo (översatt av Daniel Eriksson), Published 01/25/2018 🇺🇸 🇳🇱 ...

Ultrabook Windows Kaby Lake

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LG Gram 15Z975 (gram 15 Serie)

Processor

Intel Core i5-8250U 4 x 1.6 - 3.4 GHz, Kaby Lake Refresh

Grafikkort

Intel UHD Graphics 620, Kärna: 300 MHz, Minne: 1200 MHz, DDR4, 22.20.16.4708

Minne

8 GB

, 1200 MHz, Enkel-Kanals, 10-10-10-28

Skärm

15.60 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 = Wi-Fi 4/ac = Wi-Fi 5/), 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

LG hemsida

Note: The manufacturer may use components from different suppliers including display panels, drives or memory sticks with similar specifications.

see all specifications

Acer Swift 3 SF315-51G-57E5 HP Envy 15-as133cl Dell Inspiron 15 7570 LG Gram 15Z975 Dell XPS 15 9560 (i7-7700HQ, UHD) Samsung Notebook 9 NP900X5N-X01US DIN A4 ❌

Left: AC adapter, USB 3.0, HDMI, USB Type-C Gen. 1

Right: MicroSD reader, 3.5 mm earphones, USB 3.0, USB 2.0, Kensington Lock

SD Card Reader
average JPG Copy Test (av. of 3 runs)
Dell XPS 15 9560 (i7-7700HQ, UHD)	120.5 MB/s +43%
LG Gram 15Z975	84.3 MB/s
Samsung Notebook 9 NP900X5N-X01US	68.7 MB/s -19%
maximum AS SSD Seq Read Test (1GB)
Dell XPS 15 9560 (i7-7700HQ, UHD)	252.6 MB/s +195%
Samsung Notebook 9 NP900X5N-X01US	86.5 MB/s +1%
LG Gram 15Z975	85.6 MB/s

Networking
iperf3 transmit AX12
Dell XPS 15 9560 (i7-7700HQ, UHD) Killer Wireless-n/a/ac 1535 Wireless Network Adapter	529 MBit/s +12%
LG Gram 15Z975 Intel Dual Band Wireless-AC 8265	471 MBit/s
Samsung Notebook 9 NP900X5N-X01US Intel Dual Band Wireless-AC 8265	465 MBit/s -1%
iperf3 receive AX12
Samsung Notebook 9 NP900X5N-X01US Intel Dual Band Wireless-AC 8265	668 MBit/s +5%
Dell XPS 15 9560 (i7-7700HQ, UHD) Killer Wireless-n/a/ac 1535 Wireless Network Adapter	648 MBit/s +1%
LG Gram 15Z975 Intel Dual Band Wireless-AC 8265	639 MBit/s


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

ID: LGD052A, Name: LG Philips LP156WFA-SPC1 tested with X-Rite i1Basic Pro 2

Max: 285.6 cd/m² (Nits) 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 | 0.5-29.43 Ø4.92
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

Download ICC-fil (X-Rite i1Basic Pro 2)

	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 ?(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)	962	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 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

ℹ

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
25.6 ms ... rise ↗ and fall ↘ combined	↘ 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. » 57 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (21 ms).
↔ Response Time 50% Grey to 80% Grey
35.2 ms ... rise ↗ and fall ↘ combined	↗ 19.6 ms rise
35.2 ms ... rise ↗ and fall ↘ combined	↘ 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 (32.9 ms).

Screen Flickering / PWM (Pulse-Width Modulation)

ℹ

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: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 8746 (minimum: 5 - maximum: 343500) Hz was measured.

Cinebench R15 CPU Multi 64 Bit

Cinebench R15 | Cinebench R11.5 | Cinebench R10 | wPrime 2.10

Cinebench R15
CPU Single 64Bit
Microsoft Surface Book 2 Intel Core i7-8650U	177 Points +24%
Razer Blade Stealth QHD i7-8550U Intel Core i7-8550U	164 Points +15%
Gigabyte Aero 15X Intel Core i7-7700HQ	161 Points +13%
Microsoft Surface Laptop i7 Intel Core i7-7660U	154 Points +8%
Lenovo ThinkPad 25 Intel Core i7-7500U	146 Points +2%
HP ProBook 470 G5 Intel Core i5-8250U	144 Points +1%
LG Gram 15Z975 Intel Core i5-8250U	143 Points
HP Envy x360 15m-bq121dx AMD Ryzen 5 2500U	137 Points -4%
Dell Inspiron 15 7000 7577 Intel Core i5-7300HQ	131 Points -8%
Dell Latitude 5280 Intel Core i5-7200U	129 Points -10%
Xiaomi Mi Notebook Air 13.3 2016 Intel Core i5-6200U	118 Points -17%
HP 250 G4 T6P08ES Intel Core i5-5200U	108 Points -24%
CPU Multi 64Bit
Gigabyte Aero 15X Intel Core i7-7700HQ	742 Points +39%
Microsoft Surface Book 2 Intel Core i7-8650U	673 Points +26%
HP ProBook 470 G5 Intel Core i5-8250U	603 Points +13%
HP Envy x360 15m-bq121dx AMD Ryzen 5 2500U	574 Points +8%
LG Gram 15Z975 Intel Core i5-8250U	533 Points
Razer Blade Stealth QHD i7-8550U Intel Core i7-8550U	521 Points -2%
Dell Inspiron 15 7000 7577 Intel Core i5-7300HQ	514 Points -4%
Microsoft Surface Laptop i7 Intel Core i7-7660U	397 (337^min - 397^max) Points -26%
Lenovo ThinkPad 25 Intel Core i7-7500U	367 Points -31%
Dell Latitude 5280 Intel Core i5-7200U	328 Points -38%
Xiaomi Mi Notebook Air 13.3 2016 Intel Core i5-6200U	294 Points -45%
HP 250 G4 T6P08ES Intel Core i5-5200U	257 Points -52%

Cinebench R11.5
CPU Single 64Bit
Microsoft Surface Book 2 Intel Core i7-8650U	2.01 Points +23%
Razer Blade Stealth QHD i7-8550U Intel Core i7-8550U	1.88 Points +15%
Microsoft Surface Laptop i7 Intel Core i7-7660U	1.84 Points +13%
Gigabyte Aero 15X Intel Core i7-7700HQ	1.84 Points +13%
HP ProBook 470 G5 Intel Core i5-8250U	1.65 Points +1%
LG Gram 15Z975 Intel Core i5-8250U	1.63 Points
Lenovo ThinkPad 25 Intel Core i7-7500U	1.61 Points -1%
HP Envy x360 15m-bq121dx AMD Ryzen 5 2500U	1.53 Points -6%
Dell Inspiron 15 7000 7577 Intel Core i5-7300HQ	1.52 Points -7%
Dell Latitude 5280 Intel Core i5-7200U	1.47 Points -10%
HP 250 G4 T6P08ES Intel Core i5-5200U	1.28 Points -21%
Xiaomi Mi Notebook Air 13.3 2016 Intel Core i5-6200U	1.21 Points -26%
CPU Multi 64Bit
Gigabyte Aero 15X Intel Core i7-7700HQ	8.21 Points +42%
Microsoft Surface Book 2 Intel Core i7-8650U	7.24 Points +25%
HP ProBook 470 G5 Intel Core i5-8250U	6.75 Points +17%
HP Envy x360 15m-bq121dx AMD Ryzen 5 2500U	6.46 Points +12%
Razer Blade Stealth QHD i7-8550U Intel Core i7-8550U	6.28 Points +8%
Dell Inspiron 15 7000 7577 Intel Core i5-7300HQ	5.92 Points +2%
LG Gram 15Z975 Intel Core i5-8250U	5.79 Points
Microsoft Surface Laptop i7 Intel Core i7-7660U	4.39 Points -24%
Dell Latitude 5280 Intel Core i5-7200U	3.67 Points -37%
Lenovo ThinkPad 25 Intel Core i7-7500U	3.4 Points -41%
Xiaomi Mi Notebook Air 13.3 2016 Intel Core i5-6200U	3.23 Points -44%
HP 250 G4 T6P08ES Intel Core i5-5200U	2.81 Points -51%

Cinebench R10
Rendering Multiple CPUs 32Bit
Gigabyte Aero 15X Intel Core i7-7700HQ	22380 Points +32%
Microsoft Surface Book 2 Intel Core i7-8650U	21455 Points +27%
HP ProBook 470 G5 Intel Core i5-8250U	19724 Points +16%
Dell Inspiron 15 7000 7577 Intel Core i5-7300HQ	17971 Points +6%
LG Gram 15Z975 Intel Core i5-8250U	16942 Points
Razer Blade Stealth QHD i7-8550U Intel Core i7-8550U	16554 Points -2%
HP Envy x360 15m-bq121dx AMD Ryzen 5 2500U	14400 Points -15%
Microsoft Surface Laptop i7 Intel Core i7-7660U	13779 Points -19%
Lenovo ThinkPad 25 Intel Core i7-7500U	12799 Points -24%
Dell Latitude 5280 Intel Core i5-7200U	11292 Points -33%
HP 250 G4 T6P08ES Intel Core i5-5200U	8672 Points -49%
Rendering Single 32Bit
Microsoft Surface Book 2 Intel Core i7-8650U	6531 Points +19%
Razer Blade Stealth QHD i7-8550U Intel Core i7-8550U	6183 Points +13%
Microsoft Surface Laptop i7 Intel Core i7-7660U	6126 Points +12%
Gigabyte Aero 15X Intel Core i7-7700HQ	5952 Points +9%
Lenovo ThinkPad 25 Intel Core i7-7500U	5595 Points +2%
HP ProBook 470 G5 Intel Core i5-8250U	5560 Points +1%
LG Gram 15Z975 Intel Core i5-8250U	5480 Points
Dell Inspiron 15 7000 7577 Intel Core i5-7300HQ	5433 Points -1%
Dell Latitude 5280 Intel Core i5-7200U	4999 Points -9%
HP 250 G4 T6P08ES Intel Core i5-5200U	4134 Points -25%
HP Envy x360 15m-bq121dx AMD Ryzen 5 2500U	4103 Points -25%

wPrime 2.10 - 1024m
Lenovo ThinkPad 25 Intel Core i7-7500U	473.6 s * -58%
Dell Latitude 5280 Intel Core i5-7200U	467.3 s * -56%
Microsoft Surface Laptop i7 Intel Core i7-7660U	433 s * -45%
Razer Blade Stealth QHD i7-8550U Intel Core i7-8550U	338.4 s * -13%
Dell Inspiron 15 7000 7577 Intel Core i5-7300HQ	331.1 s * -11%
LG Gram 15Z975 Intel Core i5-8250U	299.1 s *
HP Envy x360 15m-bq121dx AMD Ryzen 5 2500U	251.1 s * +16%

Cinebench R15 | Cinebench R11.5 | Cinebench R10 | wPrime 2.10

* ... 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

533 Points

Cinebench R15 CPU Single 64Bit

143 Points

Hjälp

... jämför

PCMark 10 - Score
Dell Inspiron 15 7000 7577 GeForce GTX 1060 Max-Q, i5-7300HQ, Samsung PM961 MZVLW256HEHP	4406 Points +30%
Microsoft Surface Book 2 GeForce GTX 1050 Mobile, i7-8650U, Samsung PM961 MZVLW256HEHP	4119 (4106^min - 4190^max) Points +21%
Acer Swift 3 SF315-51G-57E5 GeForce MX150, i5-8250U, Hynix HFS128G39TND	3802 Points +12%
LG Gram 15Z975 UHD Graphics 620, i5-8250U, SK Hynix HFS256G39TND-N210A	3391 Points
Lenovo ThinkPad 25 GeForce 940MX, i7-7500U, Samsung SM961 MZVKW512HMJP m.2 PCI-e	3035 Points -10%
HP Envy x360 15m-bq121dx Vega 8, R5 2500U, HGST Travelstar 7K1000 HTS721010A9E630	2814 Points -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
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

CrystalDiskMark 5.2 / 6

AS SSD

SK Hynix HFS256G39TND-N210A

CDM 5/6 Read Seq Q32T1: 555 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: 89.1 MB/s

3DMark 11 | 3DMark

3DMark 11
1280x720 Performance GPU
HP Envy x360 15m-bq121dx AMD Radeon RX Vega 8 (Ryzen 2000/3000), R5 2500U	3602 Points +137%
Microsoft Surface Laptop i7 Intel Iris Plus Graphics 640, i7-7660U	2401 Points +58%
Microsoft Surface Laptop i7 Intel Iris Plus Graphics 640, i7-7660U	1980 Points +31%
HP ProBook 470 G5 NVIDIA GeForce 930MX, i5-8250U	2376 Points +57%
Razer Blade Stealth QHD i7-8550U Intel UHD Graphics 620, i5-8550U	1675 Points +10%
LG Gram 15Z975 Intel UHD Graphics 620, i5-8250U	1517 Points
Asus Transformer 4 Pro (i7-7500U, HD620) Intel HD Graphics 620, i7-7500U	1419 Points -6%
HP 250 G5 SP X0N33EA Intel HD Graphics 520, 6200U	1257 Points -17%
Acer TravelMate P257-M-56AX Intel HD Graphics 5500, 5200U	1147 Points -24%
Teclast Tbook 16 Power Intel HD Graphics 405 (Braswell), Z8750	408 Points -73%
1280x720 Performance Combined
HP Envy x360 15m-bq121dx AMD Radeon RX Vega 8 (Ryzen 2000/3000), R5 2500U	2918 Points +131%
Microsoft Surface Laptop i7 Intel Iris Plus Graphics 640, i7-7660U	1968 Points +56%
Microsoft Surface Laptop i7 Intel Iris Plus Graphics 640, i7-7660U	1800 Points +42%
HP ProBook 470 G5 NVIDIA GeForce 930MX, i5-8250U	1888 Points +49%
Razer Blade Stealth QHD i7-8550U Intel UHD Graphics 620, i5-8550U	1681 Points +33%
Asus Transformer 4 Pro (i7-7500U, HD620) Intel HD Graphics 620, i7-7500U	1370 Points +8%
LG Gram 15Z975 Intel UHD Graphics 620, i5-8250U	1265 Points
Acer TravelMate P257-M-56AX Intel HD Graphics 5500, 5200U	1248 Points -1%
HP 250 G5 SP X0N33EA Intel HD Graphics 520, 6200U	1196 Points -5%
Teclast Tbook 16 Power Intel HD Graphics 405 (Braswell), Z8750	363 Points -71%

3DMark
1280x720 Cloud Gate Standard Graphics
HP Envy x360 15m-bq121dx AMD Radeon RX Vega 8 (Ryzen 2000/3000), R5 2500U	16285 Points +110%
Microsoft Surface Laptop i7 Intel Iris Plus Graphics 640, i7-7660U	10486 Points +35%
Razer Blade Stealth QHD i7-8550U Intel UHD Graphics 620, i5-8550U	9349 Points +20%
HP ProBook 470 G5 NVIDIA GeForce 930MX, i5-8250U	9050 Points +17%
Asus Transformer 4 Pro (i7-7500U, HD620) Intel HD Graphics 620, i7-7500U	7894 Points +2%
LG Gram 15Z975 Intel UHD Graphics 620, i5-8250U	7760 Points
Acer TravelMate P257-M-56AX Intel HD Graphics 5500, 5200U	6590 Points -15%
HP 250 G5 SP X0N33EA Intel HD Graphics 520, 6200U	6314 Points -19%
Teclast Tbook 16 Power Intel HD Graphics 405 (Braswell), Z8750	1767 Points -77%
1920x1080 Fire Strike Graphics
HP Envy x360 15m-bq121dx AMD Radeon RX Vega 8 (Ryzen 2000/3000), R5 2500U	2460 Points +167%
HP ProBook 470 G5 NVIDIA GeForce 930MX, i5-8250U	1660 Points +80%
Microsoft Surface Laptop i7 Intel Iris Plus Graphics 640, i7-7660U	1315 Points +42%
LG Gram 15Z975 Intel UHD Graphics 620, i5-8250U	923 Points
Asus Transformer 4 Pro (i7-7500U, HD620) Intel HD Graphics 620, i7-7500U	328 Points -64%
1920x1080 Ice Storm Extreme Graphics
HP ProBook 470 G5 NVIDIA GeForce 930MX, i5-8250U	59831 Points +48%
LG Gram 15Z975 Intel UHD Graphics 620, i5-8250U	40357 Points

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

... jämför

	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

Hög belastning

Låg belastning


30.8 °C	41.4 °C	27.2 °C
26.8 °C	34 °C	22 °C
22.6 °C	24.2 °C	21.8 °C

Max: 41.4 °C
Medel: 27.9 °C


29.6 °C	39.4 °C	34.2 °C
26.4 °C	30 °C	31 °C
25 °C	27.4 °C	28.2 °C

Max: 39.4 °C
Medel: 30.1 °C

Strömförsörjning (max.) 43 °C | Rumstemperatur 20 °C | Fluke 62 Mini IR Thermometer

(+) The average temperature for the upper side under maximal load is 27.9 °C / 82 F, compared to the average of 31.3 °C / 88 F for the devices in the class Multimedia.
(±) 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%

Strömförbrukning

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

Batteritid

Låg belastning (utan WLAN, min. ljusstyrka)		17tim 58min
WiFi Websurfing		7tim 15min
Hög belastning (maximal ljusstyrka)		2tim 11min

	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

+ 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

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

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

Price comparison

Editor of the original article: Allen Ngo - Lead Editor U.S. - 5243 articles published on Notebookcheck since 2011

contact me via: @AllenNgoNBC

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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: 2024-11- 4)