Notebookcheck

Test: Lenovo Ideapad 720S (Ryzen 2500U, Vega 8) Laptop (Sammanfattning)

Mike Wobker (översatt av Daniel Eriksson), 03/17/2018

AMD-Uppdatering. Vi har redan recenserat Lenovos IdeaPad 720s och fann att den var en lätt och tunn laptop för vardagliga utmaningar. Denna laptop på 13 tum finns nu också tillgänglig med AMD:s Ryzen 5 2500U-processor som ett gångbart alternativ till Intel-SKU:n.

Lenovo Ideapad 720S-13ARR (IdeaPad 720 Serie)
Grafikkort
AMD Radeon RX Vega 8
Minne
8192 MB 
, DDR4
Skärm
13.3 tum 16:9, 1920 x 1080 pixlar 166 PPI, LG Philips LGD04EF, IPS, glansig: nej
Moderkort
AMD CZ FCH
Hårddisk
Samsung PM961 NVMe MZVLW128HEGR, 128 GB 
Ljudkort
AMD Raven - Audio Processor - HD Audio Controller
Anslutningar
3 USB 3.0, Ljudanslutningar: kombinerad ljudanslutning, 1 Fingeravtrycksläsare
Nätverk
Realtek 8821AE Wireless LAN 802.11ac PCI-E NIC (ac), Bluetooth 4.1
Storlek
höjd x bredd x djup (i mm) 14 x 306 x 214
Batteri
48 Wh Litiumjon, 4 celler, Batteritid (enligt tillverkaren): 8 tim
Operativsystem
Microsoft Windows 10 Home 64 Bit
Camera
Webbkamera: 1 MP, 720p
Övrigt
Högtalare: JBL Stereo, Tangentbord: chiclet, Tangentbordsbelysning: ja, 24 Månader Garanti
Vikt
1.14 kg, Strömförsörjning: 170 g
Pris
799 Kr

 

Size Comparison

left: 1x USB 3.0 Type-C (with power delivery), 1x USB 3.0, 1x USB 3.1 Type-C
left: 1x USB 3.0 Type-C (with power delivery), 1x USB 3.0, 1x USB 3.1 Type-C
right: microphone, 1x audio combo jack, 1x USB 3.0
right: microphone, 1x audio combo jack, 1x USB 3.0
Networking
iperf3 Client (receive) TCP 1 m 4M x10
Asus ZenBook 13 UX331UN
Intel Dual Band Wireless-AC 8265
603 MBit/s ∼100% +1371%
Average of class Office
  (5 - 688, n=155)
470 MBit/s ∼78% +1046%
Lenovo Ideapad 720S-13IKB
Intel Dual Band Wireless-AC 3165
311 MBit/s ∼52% +659%
Acer Spin 5 SP513-52N-54SF
Atheros/Qualcomm QCA6174
308 MBit/s ∼51% +651%
Lenovo Ideapad 720S-13ARR
Realtek 8821AE Wireless LAN 802.11ac PCI-E NIC
41 MBit/s ∼7%
iperf3 Client (transmit) TCP 1 m 4M x10
Acer Spin 5 SP513-52N-54SF
Atheros/Qualcomm QCA6174
580 MBit/s ∼100% +552%
Asus ZenBook 13 UX331UN
Intel Dual Band Wireless-AC 8265
515 MBit/s ∼89% +479%
Average of class Office
  (34 - 688, n=155)
437 MBit/s ∼75% +391%
Lenovo Ideapad 720S-13IKB
Intel Dual Band Wireless-AC 3165
343 MBit/s ∼59% +285%
Lenovo Ideapad 720S-13ARR
Realtek 8821AE Wireless LAN 802.11ac PCI-E NIC
89 MBit/s ∼15%
315
cd/m²
320
cd/m²
319
cd/m²
287
cd/m²
299
cd/m²
305
cd/m²
298
cd/m²
298
cd/m²
309
cd/m²
Distribution av ljusstyrkan
X-Rite i1Pro 2
Max: 320 cd/m² Medel: 305.6 cd/m²
Distribution av ljusstyrkan: 90 %
Kontrast: 1107:1 (Svärta: 0.27 cd/m²)
ΔE Color 4.46 | 0.4-29.43 Ø6.3
ΔE Greyscale 2.41 | 0.64-98 Ø6.5
83% sRGB (Argyll 3D) 55% AdobeRGB 1998 (Argyll 3D)
Gamma: 2.29
Lenovo Ideapad 720S-13ARR
LG Philips LGD04EF, , 1920x1080, 13.3
Asus ZenBook 13 UX331UN
B133HAN04.9, , 1920x1080, 13.3
Acer Spin 5 SP513-52N-54SF
LC133LF102, , 1920x1080, 13.3
Lenovo Ideapad 720S-13IKB
LG Philips LGD04EF, , 1920x1080, 13.3
Response Times
9%
-46%
-31%
Response Time Grey 50% / Grey 80% *
36 (18, 18)
22.4 (10.8, 11.6)
38%
49 (30, 19)
-36%
35 (17, 18)
3%
Response Time Black / White *
26 (14, 12)
31.2 (17.2, 14)
-20%
27 (15, 12)
-4%
25 (14, 11)
4%
PWM Frequency
128000 (90)
1000 (20)
-99%
131 (90)
-100%
Screen
-2%
6%
-16%
Brightness middle
299
338
13%
295
-1%
335
12%
Brightness
306
321
5%
276
-10%
303
-1%
Brightness Distribution
90
90
0%
88
-2%
85
-6%
Black Level *
0.27
0.35
-30%
0.27
-0%
0.46
-70%
Contrast
1107
966
-13%
1093
-1%
728
-34%
Colorchecker DeltaE2000 *
4.46
4.2
6%
2.97
33%
5.09
-14%
Colorchecker DeltaE2000 max. *
10.51
6.5
38%
5.67
46%
11.92
-13%
Greyscale DeltaE2000 *
2.41
3.9
-62%
3.12
-29%
3.23
-34%
Gamma
2.29 105%
2.43 99%
2.45 98%
2.18 110%
CCT
6757 96%
7144 91%
6676 97%
6214 105%
Color Space (Percent of AdobeRGB 1998)
55
60.4
10%
62
13%
54
-2%
Color Space (Percent of sRGB)
83
93.1
12%
94
13%
82
-1%
Total Average (Program / Settings)
4% / -0%
-20% / -6%
-24% / -20%

* ... 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
26 ms ... rise ↗ and fall ↘ combined↗ 14 ms rise
↘ 12 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. » 46 % of all devices are better.
This means that the measured response time is similar to the average of all tested devices (25.8 ms).
       Response Time 50% Grey to 80% Grey
36 ms ... rise ↗ and fall ↘ combined↗ 18 ms rise
↘ 18 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. » 27 % of all devices are better.
This means that the measured response time is better than the average of all tested devices (41.3 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 detected 128000 Hz ≤ 90 % brightness setting

The display backlight flickers at 128000 Hz (Likely utilizing PWM) Flickering detected at a brightness setting of 90 % and below. There should be no flickering or PWM above this brightness setting.

The frequency of 128000 Hz is quite high, so most users sensitive to PWM should not notice any flickering.

In comparison: 53 % of all tested devices do not use PWM to dim the display. If PWM was detected, an average of 8813 (minimum: 43 - maximum: 142900) Hz was measured.

 
0102030405060708090100110120130140150160170180190200210220230240250260270280290300310320330340350360370380390400410420430440450460470480490500510520530540550560Tooltip
Cinebench R15 CPU Multi 64 Bit
Cinebench R15
CPU Single 64Bit
Asus ZenBook 13 UX331UN
Intel Core i7-8550U
162 Points ∼100% +20%
Acer Spin 5 SP513-52N-54SF
Intel Core i5-8250U
144 Points ∼89% +7%
HP Envy x360 15-bq102ng
AMD Ryzen 5 2500U
142 Points ∼88% +5%
Acer Swift 3 SF315-41-R4W1
AMD Ryzen 5 2500U
140 Points ∼86% +4%
Lenovo Ideapad 720S-13IKB
Intel Core i5-8250U
138 Points ∼85% +2%
Average AMD Ryzen 5 2500U
  (135 - 142, n=6)
138 Points ∼85% +2%
Lenovo Ideapad 720S-13ARR
AMD Ryzen 5 2500U
135 Points ∼83%
Average of class Office
  (20 - 178, n=456)
107 Points ∼66% -21%
CPU Multi 64Bit
Asus ZenBook 13 UX331UN
Intel Core i7-8550U
623 Points ∼100% +12%
HP Envy x360 15-bq102ng
AMD Ryzen 5 2500U
618 Points ∼99% +11%
Average AMD Ryzen 5 2500U
  (556 - 618, n=6)
590 Points ∼95% +6%
Acer Swift 3 SF315-41-R4W1
AMD Ryzen 5 2500U
589 (min: 499, max: 552) Points ∼95% +6%
Lenovo Ideapad 720S-13ARR
AMD Ryzen 5 2500U
556 Points ∼89%
Acer Spin 5 SP513-52N-54SF
Intel Core i5-8250U
534 Points ∼86% -4%
Lenovo Ideapad 720S-13IKB
Intel Core i5-8250U
506 Points ∼81% -9%
Average of class Office
  (36 - 1050, n=460)
311 Points ∼50% -44%
Cinebench R15 CPU Single 64Bit
135 Points
Cinebench R15 CPU Multi 64Bit
556 Points
Cinebench R15 OpenGL 64Bit
34.29 fps
Cinebench R15 Ref. Match 64Bit
98 %
Hjälp
PCMark 8
Work Score Accelerated v2
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SanDisk SD8SN8U512G1002
5037 Points ∼100% +31%
Lenovo Ideapad 720S-13IKB
UHD Graphics 620, 8250U, Samsung PM961 MZVLW256HEHP
4777 Points ∼95% +24%
Acer Spin 5 SP513-52N-54SF
UHD Graphics 620, 8250U, Micron 1100 MTFDDAV256TBN
4563 Points ∼91% +18%
Average of class Office
  (1226 - 5428, n=290)
3928 Points ∼78% +2%
Lenovo Ideapad 720S-13ARR
Vega 8, 2500U, Samsung PM961 NVMe MZVLW128HEGR
3852 Points ∼76%
Average AMD Ryzen 5 2500U, AMD Radeon RX Vega 8
  (3797 - 3852, n=3)
3816 Points ∼76% -1%
HP Envy x360 15-bq102ng
Vega 8, 2500U, Samsung PM961 MZVLW256HEHP
3800 Points ∼75% -1%
Acer Swift 3 SF315-41-R4W1
Vega 8, 2500U, Intel SSD 600p SSDPEKKW256G7
3797 Points ∼75% -1%
Home Score Accelerated v2
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SanDisk SD8SN8U512G1002
3899 Points ∼100% +23%
Lenovo Ideapad 720S-13IKB
UHD Graphics 620, 8250U, Samsung PM961 MZVLW256HEHP
3544 Points ∼91% +12%
HP Envy x360 15-bq102ng
Vega 8, 2500U, Samsung PM961 MZVLW256HEHP
3462 Points ∼89% +9%
Acer Swift 3 SF315-41-R4W1
Vega 8, 2500U, Intel SSD 600p SSDPEKKW256G7
3450 Points ∼88% +9%
Average AMD Ryzen 5 2500U, AMD Radeon RX Vega 8
  (3168 - 3462, n=4)
3366 Points ∼86% +6%
Acer Spin 5 SP513-52N-54SF
UHD Graphics 620, 8250U, Micron 1100 MTFDDAV256TBN
3197 Points ∼82% +1%
Lenovo Ideapad 720S-13ARR
Vega 8, 2500U, Samsung PM961 NVMe MZVLW128HEGR
3168 Points ∼81%
Average of class Office
  (1169 - 4458, n=334)
2998 Points ∼77% -5%
PCMark 8 Home Score Accelerated v2
3168 poäng
PCMark 8 Work Score Accelerated v2
3852 poäng
Hjälp
Lenovo Ideapad 720S-13ARR
Samsung PM961 NVMe MZVLW128HEGR
Asus ZenBook 13 UX331UN
SanDisk SD8SN8U512G1002
Acer Spin 5 SP513-52N-54SF
Micron 1100 MTFDDAV256TBN
Lenovo Ideapad 720S-13IKB
Samsung PM961 MZVLW256HEHP
Average Samsung PM961 NVMe MZVLW128HEGR
 
CrystalDiskMark 3.0
-3%
10%
94%
14%
Write 4k QD32
124.7
211.9
70%
292
134%
332.2
166%
154 (125 - 176, n=5)
23%
Read 4k QD32
292.4
322.9
10%
247.3
-15%
349.2
19%
427 (292 - 521, n=5)
46%
Write 4k
69.54
53.47
-23%
91.58
32%
114.9
65%
115 (69.5 - 155, n=5)
65%
Read 4k
36.4
28.04
-23%
27.52
-24%
51.78
42%
40.8 (28.1 - 47.2, n=5)
12%
Write 512
163.7
369.8
126%
361.9
121%
852.3
421%
174 (139 - 197, n=5)
6%
Read 512
723.3
275
-62%
325.2
-55%
658.2
-9%
525 (456 - 723, n=5)
-27%
Write Seq
770.1
424.1
-45%
439.9
-43%
1191
55%
781 (749 - 798, n=5)
1%
Read Seq
1755
430.6
-75%
462.7
-74%
1674
-5%
1560 (991 - 2127, n=5)
-11%
Samsung PM961 NVMe MZVLW128HEGR
Sequential Read: 1755 MB/s
Sequential Write: 770.1 MB/s
512K Read: 723.3 MB/s
512K Write: 163.7 MB/s
4K Read: 36.4 MB/s
4K Write: 69.54 MB/s
4K QD32 Read: 292.4 MB/s
4K QD32 Write: 124.7 MB/s
3DMark 11 - 1280x720 Performance GPU
Asus ZenBook 13 UX331UN
NVIDIA GeForce MX150, Intel Core i7-8550U
3581 Points ∼100% +115%
HP Envy x360 15-bq102ng
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
3549 Points ∼99% +113%
Acer Swift 3 SF315-41-R4W1
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
3457 Points ∼97% +107%
Average AMD Radeon RX Vega 8
  (1668 - 4317, n=9)
3338 Points ∼93% +100%
Lenovo Ideapad 720S-13ARR
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
1668 Points ∼47%
Acer Spin 5 SP513-52N-54SF
Intel UHD Graphics 620, Intel Core i5-8250U
1607 Points ∼45% -4%
Lenovo Ideapad 720S-13IKB
Intel UHD Graphics 620, Intel Core i5-8250U
1537 Points ∼43% -8%
Average of class Office
  (185 - 4967, n=581)
1195 Points ∼33% -28%
Apple MacBook 12 (Early 2016) 1.1 GHz
Intel HD Graphics 515, Intel Core m3-6Y30
1186 Points ∼33% -29%
3DMark
1920x1080 Fire Strike Graphics
Asus ZenBook 13 UX331UN
NVIDIA GeForce MX150, Intel Core i7-8550U
2903 Points ∼100% +165%
HP Envy x360 15-bq102ng
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
2310 Points ∼80% +111%
Acer Swift 3 SF315-41-R4W1
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
2109 Points ∼73% +93%
Average AMD Radeon RX Vega 8
  (1095 - 2901, n=8)
2096 Points ∼72% +91%
Lenovo Ideapad 720S-13ARR
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
1095 Points ∼38%
Acer Spin 5 SP513-52N-54SF
Intel UHD Graphics 620, Intel Core i5-8250U
1049 Points ∼36% -4%
Lenovo Ideapad 720S-13IKB
Intel UHD Graphics 620, Intel Core i5-8250U
954 Points ∼33% -13%
Average of class Office
  (138 - 4109, n=417)
919 Points ∼32% -16%
Apple MacBook 12 (Early 2016) 1.1 GHz
Intel HD Graphics 515, Intel Core m3-6Y30
735 Points ∼25% -33%
1280x720 Cloud Gate Standard Graphics
Asus ZenBook 13 UX331UN
NVIDIA GeForce MX150, Intel Core i7-8550U
18572 Points ∼100% +154%
HP Envy x360 15-bq102ng
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
15186 Points ∼82% +108%
Acer Swift 3 SF315-41-R4W1
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
14338 Points ∼77% +96%
Average AMD Radeon RX Vega 8
  (7309 - 18177, n=8)
13496 Points ∼73% +85%
Acer Spin 5 SP513-52N-54SF
Intel UHD Graphics 620, Intel Core i5-8250U
8654 Points ∼47% +18%
Lenovo Ideapad 720S-13IKB
Intel UHD Graphics 620, Intel Core i5-8250U
8025 Points ∼43% +10%
Lenovo Ideapad 720S-13ARR
AMD Radeon RX Vega 8, AMD Ryzen 5 2500U
7309 Points ∼39%
Average of class Office
  (1208 - 27117, n=461)
6438 Points ∼35% -12%
Apple MacBook 12 (Early 2016) 1.1 GHz
Intel HD Graphics 515, Intel Core m3-6Y30
6078 Points ∼33% -17%
3DMark 11 Performance
1768 poäng
3DMark Cloud Gate Standard Score
6303 poäng
3DMark Fire Strike Score
985 poäng
Hjälp
BioShock Infinite
1920x1080 Ultra Preset, DX11 (DDOF)
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SanDisk SD8SN8U512G1002
29.91 fps ∼100% +147%
HP Envy x360 15-bq102ng
Vega 8, 2500U, Samsung PM961 MZVLW256HEHP
18.4 fps ∼62% +52%
Acer Swift 3 SF315-41-R4W1
Vega 8, 2500U, Intel SSD 600p SSDPEKKW256G7
17.6 fps ∼59% +45%
Average AMD Radeon RX Vega 8
  (12.1 - 20, n=7)
15.8 fps ∼53% +31%
Lenovo Ideapad 720S-13ARR
Vega 8, 2500U, Samsung PM961 NVMe MZVLW128HEGR
12.1 fps ∼40%
Average of class Office
  (5.3 - 39.6, n=195)
9.84 fps ∼33% -19%
Acer Spin 5 SP513-52N-54SF
UHD Graphics 620, 8250U, Micron 1100 MTFDDAV256TBN
8 fps ∼27% -34%
Lenovo Ideapad 720S-13IKB
UHD Graphics 620, 8250U, Samsung PM961 MZVLW256HEHP
7.6 fps ∼25% -37%
1280x720 Very Low Preset
HP Envy x360 15-bq102ng
Vega 8, 2500U, Samsung PM961 MZVLW256HEHP
105.7 fps ∼100% +38%
Asus ZenBook 13 UX331UN
GeForce MX150, 8550U, SanDisk SD8SN8U512G1002
101.03 fps ∼96% +32%
Acer Swift 3 SF315-41-R4W1
Vega 8, 2500U, Intel SSD 600p SSDPEKKW256G7
101 fps ∼96% +32%
Average AMD Radeon RX Vega 8
  (74.4 - 114, n=7)
95.2 fps ∼90% +24%
Lenovo Ideapad 720S-13ARR
Vega 8, 2500U, Samsung PM961 NVMe MZVLW128HEGR
76.53 fps ∼72%
Acer Spin 5 SP513-52N-54SF
UHD Graphics 620, 8250U, Micron 1100 MTFDDAV256TBN
56.1 fps ∼53% -27%
Average of class Office
  (12.2 - 185, n=306)
51.1 fps ∼48% -33%
Lenovo Ideapad 720S-13IKB
UHD Graphics 620, 8250U, Samsung PM961 MZVLW256HEHP
49.6 fps ∼47% -35%
låg med. hög ultra
BioShock Infinite (2013) 76.5312.1fps
Thief (2014) 25.25.9fps
Rise of the Tomb Raider (2016) 27.75.9fps

Ljudnivå

Låg belastning
30.4 / 30.4 / 30.4 dB(A)
Hög belastning
32.3 / 31.4 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: 30.4 dB(A)
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2031.832.832.43231.82533.431.235.730.233.43132.333.833.633.432.3403130.230.328.5315038.436.728.529.438.46327.929.527.927.827.98026.826.327.126.126.810025.425.92525.625.412524.125.12524.524.116023.423.723.323.223.420023.222.922.422.323.22502222.621.9212231521.522.720.820.921.540020.52220.32020.550020.421.819.919.420.463019.520.518.61919.580019.420.318.31819.4100019.820.818.117.519.8125019.920.117.717.419.9160019.920.517.417.419.920001920.117.317.71925001920.817.817.719315018.819.417.818.518.8400018.320.31818.318.3500018.519.718.118.318.5630018.318.718.218.418.3800018.618.818.518.818.61000018.718.818.518.718.71250018.518.718.518.618.51600018.919.418.619.318.9SPL31.432.330.430.531.4N1.61.71.41.41.6median 19.5Lenovo Ideapad 720S-13ARRmedian 20.5median 18.5median 18.7median 19.5Delta1.31.61.91.71.3hearing rangehide median Fan Noise
Hög belastning
 32.8 °C37.9 °C33.1 °C 
 30.6 °C26.6 °C32.1 °C 
 26.7 °C26.1 °C26.6 °C 
Max: 37.9 °C
Medel: 30.3 °C
34.3 °C38.2 °C32 °C
29 °C30.2 °C30 °C
26.4 °C27.4 °C27.7 °C
Max: 38.2 °C
Medel: 30.6 °C
Strömförsörjning (max.)  33 °C | Rumstemperatur 22.1 °C | FIRT 550-Pocket
dB(A) 0102030405060708090Deep BassMiddle BassHigh BassLower RangeMidsHigher MidsLower HighsMid HighsUpper HighsSuper Highs2032.63232.62533.830.233.83139.133.439.1403328.5335036.329.436.3632827.8288026.326.126.310026.325.626.312531.324.531.316036.123.236.120042.522.342.525055.62155.63156220.96240063.82063.850062.619.462.663061.71961.780069.71869.7100067.517.567.512506117.461160060.317.460.3200062.717.762.725005817.758315060.518.560.540005618.356500052.618.352.6630053.218.453.2800051.818.851.81000055.818.755.81250061.318.661.31600058.819.358.8SPL74.130.574.1N32.81.432.8median 58.8Lenovo Ideapad 720S-13ARRmedian 18.7median 58.8Delta6.31.76.335.335.132.931.831.83236.535.132.428.93328.936.328.848.32761.52752.924.860.92462.822.763.32269.521.267.82174.82075.919.472.718.97117.770.117.86917.671.817.668.117.671.417.673.717.670.417.571.617.671.617.669.617.459.717.583.630.662.51.5median 69.6Apple MacBook 12 (Early 2016) 1.1 GHzmedian 17.84.62.4hearing rangehide median Pink Noise
Lenovo Ideapad 720S-13ARR audio analysis

(-) | not very loud speakers (69.67 dB)
Bass 100 - 315 Hz
(-) | nearly no bass - on average 17.6% lower than median
(±) | linearity of bass is average (14.8% delta to prev. frequency)
Mids 400 - 2000 Hz
(+) | balanced mids - only 4.8% away from median
(±) | linearity of mids is average (7.4% delta to prev. frequency)
Highs 2 - 16 kHz
(+) | balanced highs - only 3.9% away from median
(±) | linearity of highs is average (7.5% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (18.8% difference to median)
Compared to same class
» 38% of all tested devices in this class were better, 9% similar, 53% worse
» The best had a delta of 8%, average was 20%, worst was 51%
Compared to all devices tested
» 36% of all tested devices were better, 6% similar, 59% 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
» 2% of all tested devices in this class were better, 1% similar, 97% worse
» The best had a delta of 8%, average was 19%, worst was 47%
Compared to all devices tested
» 2% of all tested devices were better, 1% similar, 98% worse
» The best had a delta of 3%, average was 21%, worst was 53%

Strömförbrukning
Av/Standbydarklight 0.37 / 0.44 Watt
Låg belastningdarkmidlight 5.3 / 9 / 12.6 Watt
Hög belastning midlight 37.1 / 26.5 Watt
 color bar
Förklaring: min: dark, med: mid, max: light        Metrahit Energy
Lenovo Ideapad 720S-13ARR
2500U, Vega 8, Samsung PM961 NVMe MZVLW128HEGR, IPS, 1920x1080, 13.3
Lenovo Ideapad 720S-13IKB
8250U, UHD Graphics 620, Samsung PM961 MZVLW256HEHP, IPS, 1920x1080, 13.3
HP Envy x360 15-bq102ng
2500U, Vega 8, Samsung PM961 MZVLW256HEHP, IPS, 1920x1080, 15.6
Acer Swift 3 SF315-41-R4W1
2500U, Vega 8, Intel SSD 600p SSDPEKKW256G7, IPS, 1920x1080, 15.6
Power Consumption
8%
-4%
-23%
Idle Minimum *
5.3
3.9
26%
4.8
9%
7.3
-38%
Idle Average *
9
7.7
14%
7
22%
9.7
-8%
Idle Maximum *
12.6
10.4
17%
9.5
25%
13
-3%
Load Average *
37.1
33.3
10%
40.8
-10%
40.4
-9%
Load Maximum *
26.5
34
-28%
44.3
-67%
42.2
-59%

* ... smaller is better

Batteritid
Låg belastning (utan WLAN, min. ljusstyrka)
11tim 23min
NBC WiFi Websurfing Battery Test 1.3
3tim 24min
Big Buck Bunny H.264 1080p
3tim 20min
Hög belastning (maximal ljusstyrka)
2tim 14min
Lenovo Ideapad 720S-13ARR
2500U, Vega 8, 48 Wh
Lenovo Ideapad 720S-13IKB
8250U, UHD Graphics 620, 46 Wh
Acer Swift 3 SF315-41-R4W1
2500U, Vega 8, 48 Wh
HP Envy x360 15-bq102ng
2500U, Vega 8, 55.8 Wh
Average of class Office
 
Battery Runtime
73%
6%
109%
40%
Reader / Idle
683
1035
52%
730
7%
553 (101 - 1857, n=760)
-19%
H.264
200
408 (139 - 791, n=144)
104%
WiFi v1.3
204
608
198%
310
52%
426
109%
407 (105 - 964, n=273)
100%
Load
134
91
-32%
81
-40%
101 (37 - 259, n=705)
-25%

För

+ otroligt lätt vikt
+ väldigt tunn
+ väldigt smal infattning

Emot

- dålig anslutbarhet
- dåliga möjligheter till underhåll
- endast enkelkanals-RAM
- dåligt kylsystem

Läs den fullständiga versionen av den här recensionen på engelska här.

Vår recension visar tydligt att det inte räcker att ta en existerande laptop-design och byta ut dess Intel-CPU mot en AMD Ryzen 5 2500U. Om Lenovo hade lagt lite tid och energi på att anpassa kyllösningen till den nya AMD CPU:n så hade denna Ryzen-baserade IdeaPad 720s kunnat bli ett riktigt alternativ till Intels 8:e generation Core-processorer.

Den AMD-baserade IdeaPad 720s är en gedigen och kraftfull laptop som begränsas av den katastrofalt dåliga och otillräckliga kyllösningen.

Trots det, denna AMD-SKU av Lenovos IdeaPad 720s är fortfarande en hyfsad kontorslaptop med tillräckligt av oomph för vardagliga kontorsuppgifter och grundläggande multimediautmaningar. Vi hade förväntat oss bättre prestanda än vad som erbjöds av den nyligen recenserade Intel SKU:n; tyvärr så föll den offer för Lenovos misslyckande med att anpassa enheten till AMD:s CPU på ett lämpligt sätt.

Lenovo Ideapad 720S-13ARR - 03/07/2018 v6
Mike Wobker

Design
87 / 98 → 89%
Tangentbord
80%
Mus
87%
Anslutningar
37 / 80 → 46%
Vikt
73 / 20-67 → 100%
Batteri
71%
Skärm
82%
Spelprestanda
60 / 68 → 88%
Programprestanda
74 / 92 → 80%
Temperatur
94%
Ljudnivå
94%
Audio
50%
Camera
56 / 85 → 66%
Medel
73%
82%
Office - Vägt medel

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> Bärbara datorer, laptops - tester och nyheter > Tester > Test: Lenovo Ideapad 720S (Ryzen 2500U, Vega 8) Laptop (Sammanfattning)
Mike Wobker, 2018-03-17 (Update: 2018-03-17)