戴尔 Inspiron 15 5578-1777 变形本简短评测

Name: Dell Inspiron 15 5578-1777 2-in-1
Brand: Dell

Kaby Lake升级。 一颗强劲的处理器，一块IPS屏幕和高速固态硬盘：这些都是一台优秀办公电脑的必要配备，而这台Inspiron一样都没少。在此之上它还提供了背光键盘、优秀的电池续航，以及支持手写笔的触控屏幕。这一切只需要不足800欧元（约5886人民币）的预算。

Sascha Mölck, ✓ Tanja Hinum (translated by Yuchen Wang), Published 01/27/2017 🇺🇸 🇩🇪 ...

Convertible / 2-in-1 Kaby Lake Touchscreen Windows

Test device courtesy of notebooksbilliger.de

Download your licensed rating image as PNG / SVG

Dell Inspiron 15 5578-1777 2-in-1 (Inspiron 15 5000 Series)

Processor

Intel Core i5-7200U 2 x 2.5 - 3.1 GHz, Kaby Lake

Graphics adapter

Intel HD Graphics 620, Core: 1000 MHz, 单通道, 21.20.4526

Memory

8 GB

, DDR4-2400, 单通道, 两个内存槽（一个已占用）

Display

15.60 inch 16:9, 1920 x 1080 pixel 141 PPI, 电容式, 10点触控, 支持主动式手写笔, 非压力感应, LG Philips (Dell 156WF7), IPS, glossy: yes

Mainboard

Intel Kaby Lake-U Premium PCH

Storage

SanDisk X400 256GB, SATA (SD8SB8U-256G), 256 GB

, 200 GB free

Soundcard

Realtek ALC225 @ Intel Sunrise Point-LP PCH - High Definition Audio Controller

Connections

1 USB 2.0, 2 USB 3.0 / 3.1 Gen1, 1 HDMI, 1 Kensington Lock, Audio Connections: 整合音频接口, Card Reader: SD, Sensors: 加速感应器, TPM 2.0

Networking

Intel Dual Band Wireless-AC 3165 (a/b/g/n = Wi-Fi 4/ac = Wi-Fi 5/), Bluetooth 4.2

Size

height x width x depth (in mm): 20.2 x 381.9 x 253.1

Battery

42 Wh Lithium-Ion, Battery runtime (according to manufacturer): 6 h

Operating System

Microsoft Windows 10 Home 64 Bit

Camera

Webcam: 高清

Additional features

Speakers: 立体声, Keyboard: 孤岛式, Keyboard Light: yes, McAfee LiveSafe (试用版), MS Office 家庭和学生 2016 (试用版), 24 Months Warranty

Weight

2.82 kg, Power Supply: 288 g

Price

799 Euro

Links

Dell homepage
Dell notebook section

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

see all specifications

SD Card Reader
average JPG Copy Test (av. of 3 runs)
Lenovo Yoga 510-15ISK	74.2 MB/s +180%
HP Pavilion x360 15-bk102ng	60.5 MB/s +128%
Dell Inspiron 15 5578-1777 2-in-1	26.5 MB/s
Dell Inspiron 15 5568	21 MB/s -21%
maximum AS SSD Seq Read Test (1GB)
HP Pavilion x360 15-bk102ng	87 MB/s +181%
Lenovo Yoga 510-15ISK	85.1 MB/s +175%
Dell Inspiron 15 5578-1777 2-in-1	31 MB/s
Dell Inspiron 15 5568	26.5 MB/s -15%

Networking
iperf3 transmit AX12
HP Pavilion x360 15-bk102ng Intel Dual Band Wireless-AC 3168	314 MBit/s 0%
Dell Inspiron 15 5578-1777 2-in-1 Intel Dual Band Wireless-AC 3165	313 MBit/s
iperf3 receive AX12
HP Pavilion x360 15-bk102ng Intel Dual Band Wireless-AC 3168	352 MBit/s +98%
Dell Inspiron 15 5578-1777 2-in-1 Intel Dual Band Wireless-AC 3165	178 MBit/s
iperf Client (transmit) TCP 1 m
Dell Inspiron 15 5568 Intel Dual Band Wireless-AC 3165	390 MBit/s
iperf Server (receive) TCP 1 m
Dell Inspiron 15 5568 Intel Dual Band Wireless-AC 3165	372 MBit/s


239 cd/m²	239 cd/m²	237 cd/m²
237 cd/m²	244 cd/m²	236 cd/m²
253 cd/m²	251 cd/m²	245 cd/m²

Distribution of brightness

LG Philips (Dell 156WF7) tested with X-Rite i1Pro 2

Maximum: 253 cd/m² (Nits) Average: 242.3 cd/m² Minimum: 14.5 cd/m²
Brightness Distribution: 93 %
Center on Battery: 244 cd/m²
Contrast: 976:1 (Black: 0.25 cd/m²)
ΔE Color 4.94 | 0.5-29.43 Ø5
ΔE Greyscale 4.93 | 0.57-98 Ø5.3
63% sRGB (Argyll 1.6.3 3D)
40% AdobeRGB 1998 (Argyll 1.6.3 3D)
43.13% AdobeRGB 1998 (Argyll 2.2.0 3D)
62.8% sRGB (Argyll 2.2.0 3D)
41.74% Display P3 (Argyll 2.2.0 3D)
Gamma: 2.7

Download ICC File (X-Rite i1Pro 2)

	Dell Inspiron 15 5578-1777 2-in-1 IPS, 1920x1080, 15.60	Dell Inspiron 15 5568 IPS, 1920x1080, 15.60	HP Pavilion x360 15-bk102ng IPS, 1920x1080, 15.60	Lenovo Yoga 510-15ISK IPS, 1920x1080, 15.60
Display		-9%	-5%	2%
Display P3 Coverage	41.74	38.04 -9%	39.45 -5%	42.58 2%
sRGB Coverage	62.8	57.1 -9%	59.2 -6%	63.9 2%
AdobeRGB 1998 Coverage	43.13	39.3 -9%	40.76 -5%	43.99 2%
Response Times		7%	-15%	-17%
Response Time Grey 50% / Grey 80% *	55 ?(20, 35)	42 ?(19, 23) 24%	55 ?(23, 32) -0%	43.2 ?(19.6, 23.6) 21%
Response Time Black / White *	20 ?(4, 16)	22 ?(6, 16) -10%	26 ?(10, 16) -30%	30.8 ?(17.6, 13.2) -54%
PWM Frequency			50 ?(20)
Screen		-3%	-28%	2%
Brightness middle	244	266 9%	205 -16%	254 4%
Brightness	242	249 3%	191 -21%	230 -5%
Brightness Distribution	93	85 -9%	74 -20%	86 -8%
Black Level *	0.25	0.26 -4%	0.3 -20%	0.26 -4%
Contrast	976	1023 5%	683 -30%	977 0%
Colorchecker dE 2000 *	4.94	4.98 -1%	7.2 -46%	4.23 14%
Colorchecker dE 2000 max. *	7.3	11.82 -62%	12.7 -74%	9.5 -30%
Greyscale dE 2000 *	4.93	2.68 46%	6.86 -39%	2.87 42%
Gamma	2.7 ^81%	2.27 ^97%	2.27 ^97%	2.35 ^94%
CCT	7401 ^88%	6583 ^99%	6983 ^93%	5965 ^109%
Color Space (Percent of AdobeRGB 1998)	40	36 -10%	38 -5%	40.35 1%
Color Space (Percent of sRGB)	63	57 -10%	59 -6%	63.48 1%
Total Average (Program / Settings)		-2% / -3%	-16% / -22%	-4% / -1%

* ... smaller is better

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 17915 (minimum: 5 - maximum: 3846000) Hz was measured.

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
20 ms ... rise ↗ and fall ↘ combined	↗ 4 ms rise
20 ms ... rise ↗ and fall ↘ combined	↘ 16 ms fall
The screen shows good response rates in our tests, but may be too slow for competitive gamers. In comparison, all tested devices range from 0.1 (minimum) to 240 (maximum) ms. » 37 % of all devices are better. This means that the measured response time is similar to the average of all tested devices (21.5 ms).
↔ Response Time 50% Grey to 80% Grey
55 ms ... rise ↗ and fall ↘ combined	↗ 20 ms rise
55 ms ... rise ↗ and fall ↘ combined	↘ 35 ms fall
The screen shows slow response rates in our tests and will be unsatisfactory for gamers. In comparison, all tested devices range from 0.2 (minimum) to 636 (maximum) ms. » 90 % of all devices are better. This means that the measured response time is worse than the average of all tested devices (33.7 ms).

Cinebench R10 Rendering Single 32Bit

4976

Cinebench R10 Rendering Multiple CPUs 32Bit

11078

Cinebench R10 Shading 32Bit

7731

Cinebench R15 CPU Single 64Bit

126 Points

Cinebench R15 CPU Multi 64Bit

326 Points

Cinebench R15 OpenGL 64Bit

37.44 fps

Cinebench R15 Ref. Match 64Bit

97.7 %

Help

... in comparison

Cinebench R15 | Cinebench R10 | Geekbench 3 | Geekbench 4.0 | JetStream 1.1

Cinebench R15
CPU Single 64Bit
Dell Inspiron 15 5568 Intel Core i7-6500U	128 Points +2%
HP Pavilion x360 15-bk102ng Intel Core i5-7200U	126 Points 0%
Dell Inspiron 15 5578-1777 2-in-1 Intel Core i5-7200U	126 Points
Lenovo Yoga 510-15ISK Intel Core i5-6200U	114 Points -10%
CPU Multi 64Bit
HP Pavilion x360 15-bk102ng Intel Core i5-7200U	326 Points 0%
Dell Inspiron 15 5578-1777 2-in-1 Intel Core i5-7200U	326 Points
Dell Inspiron 15 5568 Intel Core i7-6500U	308 Points -6%
Lenovo Yoga 510-15ISK Intel Core i5-6200U	289 Points -11%

Cinebench R10
Rendering Multiple CPUs 32Bit
HP Pavilion x360 15-bk102ng Intel Core i5-7200U	11328 Points +2%
Dell Inspiron 15 5578-1777 2-in-1 Intel Core i5-7200U	11078 Points
Lenovo Yoga 510-15ISK Intel Core i5-6200U	9846 Points -11%
Rendering Single 32Bit
Dell Inspiron 15 5578-1777 2-in-1 Intel Core i5-7200U	4976 Points
HP Pavilion x360 15-bk102ng Intel Core i5-7200U	4787 Points -4%
Lenovo Yoga 510-15ISK Intel Core i5-6200U	4399 Points -12%

Geekbench 3
32 Bit Single-Core Score
Dell Inspiron 15 5578-1777 2-in-1 Intel Core i5-7200U	2893 Points
HP Pavilion x360 15-bk102ng Intel Core i5-7200U	2812 Points -3%
Lenovo Yoga 510-15ISK Intel Core i5-6200U	2699 Points -7%
32 Bit Multi-Core Score
Dell Inspiron 15 5578-1777 2-in-1 Intel Core i5-7200U	6439 Points
HP Pavilion x360 15-bk102ng Intel Core i5-7200U	6297 Points -2%
Lenovo Yoga 510-15ISK Intel Core i5-6200U	5733 Points -11%

Geekbench 4.0
64 Bit Single-Core Score
Dell Inspiron 15 5578-1777 2-in-1 Intel Core i5-7200U	3632 Points
HP Pavilion x360 15-bk102ng Intel Core i5-7200U	3484 Points -4%
64 Bit Multi-Core Score
Dell Inspiron 15 5578-1777 2-in-1 Intel Core i5-7200U	6795 Points
HP Pavilion x360 15-bk102ng Intel Core i5-7200U	6425 Points -5%

JetStream 1.1 - Total Score
Dell Inspiron 15 5578-1777 2-in-1 Intel Core i5-7200U	219.9 Points
HP Pavilion x360 15-bk102ng Intel Core i5-7200U	212 Points -4%
Dell Inspiron 15 5568 Intel Core i7-6500U	207.1 Points -6%
Lenovo Yoga 510-15ISK Intel Core i5-6200U	196.9 Points -10%

PCMark 8 Home Score Accelerated v2		3446 points
Help

PCMark 8 - Home Score Accelerated v2
Lenovo Yoga 510-15ISK Radeon R7 M460, 6200U, Liteonit CV3-DE256	3651 Points +6%
Dell Inspiron 15 5568 HD Graphics 520, 6500U, Toshiba THNSNK256GCS8	3607 Points +5%
Dell Inspiron 15 5578-1777 2-in-1 HD Graphics 620, i5-7200U, SanDisk X400 256GB, SATA (SD8SB8U-256G)	3446 Points
HP Pavilion x360 15-bk102ng HD Graphics 620, i5-7200U, WDC Slim WD10SPCX-21KHST0	3173 Points -8%

CrystalDiskMark 3.0

AS SSD

SanDisk X400 256GB, SATA (SD8SB8U-256G)

Sequential Read: 503 MB/s

Sequential Write: 465.3 MB/s

512K Read: 293 MB/s

512K Write: 322.7 MB/s

4K Read: 28.9 MB/s

4K Write: 55 MB/s

4K QD32 Read: 314.5 MB/s

4K QD32 Write: 209.2 MB/s

	Dell Inspiron 15 5578-1777 2-in-1 SanDisk X400 256GB, SATA (SD8SB8U-256G)	Dell Inspiron 15 5568 Toshiba THNSNK256GCS8	HP Pavilion x360 15-bk102ng WDC Slim WD10SPCX-21KHST0	Lenovo Yoga 510-15ISK Liteonit CV3-DE256
CrystalDiskMark 3.0		-4%	-91%	6%
Read Seq	503	458.6 -9%	102.4 -80%	487 -3%
Write Seq	465.3	270 -42%	102 -78%	450.7 -3%
Read 512	293	397.4 36%	31.37 -89%	384.5 31%
Write 512	322.7	242 -25%	48.12 -85%	356.3 10%
Read 4k	28.9	19.88 -31%	0.357 -99%	27.05 -6%
Write 4k	55	86.7 58%	1.047 -98%	63.7 16%
Read 4k QD32	314.5	275.3 -12%	0.844 -100%	281.5 -10%
Write 4k QD32	209.2	197.6 -6%	1.098 -99%	232 11%

3DMark 11 Performance		1528 points
Help

... in comparison

3DMark 11 - 1280x720 Performance GPU
Lenovo Yoga 510-15ISK AMD Radeon R7 M460, Intel Core i5-6200U	2137 Points +50%
Dell Inspiron 15 5568 Intel HD Graphics 520, Intel Core i7-6500U	1506 Points +6%
Dell Inspiron 15 5578-1777 2-in-1 Intel HD Graphics 620, Intel Core i5-7200U	1422 Points
HP Pavilion x360 15-bk102ng Intel HD Graphics 620, Intel Core i5-7200U	1355 Points -5%

	low	med.	high	ultra
BioShock Infinite (2013)	40.3	24.3	19.9	6.3
Civilization VI (2016)	26.8	9.2

Noise Level

Idle		30.4 / 30.4 / 30.4 dB(A)
Load		32.3 / 35.2 dB(A)

	30 dB silent 40 dB(A) audible 50 dB(A) loud
min: , med: , max: Audix TM1, Arta (15 cm distance) environment noise: 30.6 dB(A)

Max. Load

Idle


34 °C	37.3 °C	28.6 °C
33.4 °C	25.4 °C	26.7 °C
24.5 °C	24.6 °C	25.5 °C

Maximum: 37.3 °C
Average: 28.9 °C


24.8 °C	43.3 °C	42.6 °C
25.2 °C	34.7 °C	40.3 °C
25 °C	25.8 °C	24.9 °C

Maximum: 43.3 °C
Average: 31.8 °C

Power Supply (max.) 44.6 °C | Room Temperature 22.4 °C | FIRT 550-Pocket

(+) The average temperature for the upper side under maximal load is 28.9 °C / 84 F, compared to the average of 30.2 °C / 86 F for the devices in the class Convertible.
(+) The maximum temperature on the upper side is 37.3 °C / 99 F, compared to the average of 35.3 °C / 96 F, ranging from 19.6 to 55.7 °C for the class Convertible.
(±) The bottom heats up to a maximum of 43.3 °C / 110 F, compared to the average of 36.8 °C / 98 F
(+) In idle usage, the average temperature for the upper side is 24.3 °C / 76 F, compared to the device average of 30.2 °C / 86 F.
(+) The palmrests and touchpad are cooler than skin temperature with a maximum of 25.5 °C / 77.9 F and are therefore cool to the touch.
(+) The average temperature of the palmrest area of similar devices was 28.1 °C / 82.6 F (+2.6 °C / 4.7 F).

Speakers

Dell Inspiron 15 5578-1777 2-in-1 audio analysis

(-) | not very loud speakers (67 dB)
Bass 100 - 315 Hz
(±) | reduced bass - on average 10.3% lower than median
(±) | linearity of bass is average (7.3% delta to prev. frequency)
Mids 400 - 2000 Hz
(±) | higher mids - on average 6.6% higher than median
(±) | linearity of mids is average (7.3% delta to prev. frequency)
Highs 2 - 16 kHz
(±) | higher highs - on average 5.5% higher than median
(±) | linearity of highs is average (12.7% delta to prev. frequency)
Overall 100 - 16.000 Hz
(±) | linearity of overall sound is average (19.6% difference to median)
Compared to same class
» 44% of all tested devices in this class were better, 6% similar, 50% worse
» The best had a delta of 6%, average was 21%, worst was 57%
Compared to all devices tested
» 44% of all tested devices were better, 7% similar, 49% 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
» 5% of all tested devices in this class were better, 2% similar, 93% worse
» The best had a delta of 5%, average was 19%, worst was 53%
Compared to all devices tested
» 3% of all tested devices were better, 1% similar, 96% worse
» The best had a delta of 4%, average was 25%, worst was 134%

Power Consumption

Off / Standby	0.25 / 0.35 Watt
Idle	4.3 / 7.6 / 9.8 Watt
Load	32.6 / 28.4 Watt


Key: min: , med: , max: Metrahit Energy Currently we use the Metrahit Energy, a professional single phase power quality and energy measurement digital multimeter, for our measurements. Find out more about it here. All of our test methods can be found here.

Battery Runtime


WiFi Websurfing (Edge 38)		6h 34min

Battery Runtime - WiFi Websurfing
Dell Inspiron 15 5578-1777 2-in-1 i5-7200U, HD Graphics 620, 42 Wh	394 min
HP Pavilion x360 15-bk102ng i5-7200U, HD Graphics 620, 48 Wh	348 min -12%
Lenovo Yoga 510-15ISK 6200U, Radeon R7 M460, 35 Wh	335 min -15%
Dell Inspiron 15 5568 6500U, HD Graphics 520, 42 Wh	299 min -24%

Pros

+ IPS屏幕

+ 全高清屏幕

+ 运行安静

+ 高速固态硬盘

+ 优秀的电池续航

+ 背光键盘

Cons

- 屏幕较暗

- 不支持USB-C接口

In review: Dell Inspiron 15 5578-1777. Test device courtesy of Notebooksbilliger.de

Inspiron 15 5578是戴尔设计的一台15.6寸变形本。它只有内部硬件与前几台机型有所不同。生产商现在为它搭配了一颗Kaby Lake处理器，为它提供了在未来几年都不需要担心的足够性能。这台Inspiron的散热风扇或硬盘不再会给用户带来噪音。在待机时，这台设备能够完全保持安静；甚至是在高负载下它也不算吵闹。这台笔记本电脑也能够保持清凉。

一块高速固态硬盘保证了系统的迅捷响应。由于底盖可以打开，用户可以更换固态硬盘。这台设备的电池续航表现不俗。它的触控屏幕表现完美，可以对手指或主动式手写笔的操作作出实时的响应。为了测试手写笔的表现，我们用Hama生产的一根手写笔尝试了点击和全屏的拖拽操作，这台设备都没有让我们失望。它的背光键盘整体上也十分实用。

在所有重要的领域，这台Inspiron都从Kaby Lake更新中得到了好处。它的电池续航也得到了长足进步，系统更是得到了更高的运算性能。

它的IPS屏幕十分养眼，提供了宽广的可视角度范围，高对比度和不错的色彩还原准确度。它的亮度对于户外使用来说有点低，这让我们感到有些遗憾，用户将只能在室内使用这台设备了。它的另一个缺点是缺少USB-C接口。作为一台最新设备，我们期待它至少能提供一个最新接口。

另外一个值得一提的是，如果你要在戴尔官网购买这台设备的话，它的标准质保时间是一年。而在欧洲的一些其他购物网站（如notebooksbilliger.de）会提供消费者两年的质保。在这两种情况下，用户都可以选购戴尔的额外保修计划。

注：本文是基于完整评测的缩减版本，阅读完整的英文评测，请点击这里。

Dell Inspiron 15 5578-1777 2-in-1 - 2017-01-18 01/18/2017 v6^(old)
Sascha Mölck

Chassis

85 / 98 → 87%

Keyboard

85%

Pointing Device

84%

Connectivity

46 / 80 → 57%

Weight

58 / 35-78 → 53%

Battery

89%

Display

82%

Games Performance

54 / 68 → 80%

Application Performance

84 / 87 → 97%

Temperature

94%

Noise

93%

Audio

62 / 91 → 68%

Camera

47 / 85 → 56%

Average

74%

79%

Convertible - Weighted Average

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> Notebookcheck中文版（NBC中国） > 评测 > 戴尔 Inspiron 15 5578-1777 变形本简短评测

Sascha Mölck, 2017-01-27 (Update: 2017-01-28)