Notice: Your browser is not supported or outdated so some features of the site might not be available.
- Table of Contents
- Top
- Main Differences
- Design
- Display
- Interface
- Connectivity
- Configuration
- Performance
- Additional Features And Software
- Comments
Lenovo Chromebook C340 15 (2020) vs Lenovo Chromebook Duet (2020)
Side-by-Side Comparison
Products
Lenovo Chromebook C340 15 (2020)
Lenovo Chromebook Duet (2020)
Tested using Methodology v0.8.2
Updated Jan 25, 2024 09:31 PM
SEE PRICE
Amazon.comTested using Methodology v0.8
Updated Mar 19, 2024 01:13 PM
SEE PRICE
Amazon.com
Size15.6"
Operating SystemChrome OS
Size10.1"
Operating SystemChrome OS
Variants
- Chromebook C340 15 (81T90003US) (Mineral Gray - Pentium Gold 4417U/4GB/32GB)
- Chromebook C340 15 (81T9000QUS) (Mineral Gray - Pentium Gold 4417U/4GB/64GB)
- Chromebook C340 15 (81T9000XUS) (Mineral Gray - i3-8130U/4GB/32GB)
- Chromebook C340 15 (81T9000VUS) (Mineral Gray - i3-8130U/4GB/64GB)
- Chromebook C340 15 (81T90002UX) (Mineral Gray - i3-8130U/4GB/64GB)
- Chromebook C340 15 (81T9000AUK) (Mineral Gray - i3-8130U/4GB/64GB)
- Chromebook Duet (ZA6F0031US) (Iron Gray - 128GB)
- Chromebook Duet (ZA6F0075US) (Iron Gray - 128GB)
- Chromebook Duet (ZA6F0072US) (Iron Gray - 64GB)
Our Verdict
Lenovo Chromebook C340 15 (2020)
Lenovo Chromebook Duet (2020)
The Lenovo Chromebook C340 15 (2020) and the Lenovo Chromebook Duet (2020) are 2-in-1 convertible Chrome OS laptops. However, the C340 has a 360-degree hinge that lets you flip the screen around, whereas the Duet is more of a tablet with a detachable keyboard. For the most part, the Duet is better suited for media consumption because it has a sharper and more colorful screen. However, the C340 is a better choice if you need to get work done. It has a larger screen for multitasking, a significantly more comfortable keyboard, a more responsive touchpad, and its Intel CPU can handle heavier workloads.
Main Differences forSchool
School
Threshold
School
7.5
6.9
Touchpad
7.6
4.2
Portability
7.8
9.4
Ports
6.5
1.0
Keyboard
6.6
5.1
Full Comparison
Design
Style
Style Photo
Form Factor
2 in 1
Tablet
Build Quality
8.0
7.0
Build Quality Photo
Hinge
7.5
6.8
Hinge Photo
Range
360°
158°
Stability
Good
Good
One Finger Lift
No
No
Portability
7.8
9.4
Dimensions Photo
Size
15.6"
10.1"
Thickness
0.7" (1.8 cm)
0.7" (1.8 cm)
Width
14.3" (36.2 cm)
9.6" (24.4 cm)
Depth
9.8" (24.9 cm)
6.6" (16.8 cm)
Volume
99.0 in³ (1,622.5 cm³)
45.0 in³ (737.9 cm³)
Weight
4.4 lbs (2.0 kg)
2.0 lbs (0.9 kg)
Charger Size
6.8 in³ (111.6 cm³)
2.6 in³ (43.0 cm³)
Charger Weight
0.4 lbs (0.2 kg)
0.2 lbs (0.1 kg)
Serviceability
4.5
0.0
Internals Photo
Ease Of Access
7.0
0
RAM Slots
0
0
Storage Slots
0
0
Replaceable Battery
Yes
No
Replaceable Wireless Adapter
Yes
No
In The Box
In The Box Photo
Display
Screen Specs
Display Photo
Resolution
1920 x 1080
1920 x 1200
Aspect Ratio
16:9
16:10
Pixel Density
141 PPI
229 PPI
Panel Type
IPS
IPS
Touch Screen
Yes
Yes
Screen-To-Body Ratio
77%
70%
Refresh Rate
5.9
5.9
Motion Blur
Refresh Rate
60 Hz
60 Hz
Variable Refresh Rate
No
No
Contrast
7.8
6.6
Contrast Photo
Native Contrast
1,627 : 1
944 : 1
Brightness
6.6
7.8
Maximum Brightness
265 cd/m²
372 cd/m²
Minimum Brightness
13 cd/m²
4 cd/m²
Reflections
7.3
7.0
Reflections Photo Off
Reflections Photo Max
Screen Finish
Glossy
Glossy
Total Reflections
4.46%
5.08%
Indirect Reflections
1.02%
1.76%
Calculated Direct Reflections
3.44%
3.31%
Black Uniformity
8.0
6.6
Black Uniformity Photo
Uniformity (Std. Dev.)
0.844%
1.603%
Horizontal Viewing Angle
6.5
7.6
Horizontal Viewing Angle Video
Horizontal Chroma Picture
Color Washout From Left
21°
31°
Color Washout From Right
25°
33°
Horizontal Hue Picture
Color Shift From Left
27°
60°
Color Shift From Right
60°
60°
Horizontal Lightness Picture
Brightness Loss From Left
24°
31°
Brightness Loss From Right
26°
33°
Black Level Raise From Left
60°
60°
Black Level Raise From Right
60°
60°
Gamma Shift From Left
22°
36°
Gamma Shift From Right
26°
40°
Vertical Viewing Angle
6.4
7.2
Vertical Viewing Angle Video
Vertical Chroma Picture
Color Washout From Below
25°
28°
Color Washout From Above
22°
27°
Vertical Hue Picture
Color Shift From Below
29°
45°
Color Shift From Above
38°
45°
Vertical Lightness Picture
Brightness Loss From Below
26°
32°
Brightness Loss From Above
24°
30°
Black Level Raise From Below
45°
45°
Black Level Raise From Above
45°
45°
Gamma Shift From Below
28°
30°
Gamma Shift From Above
26°
29°
Out-Of-The-Box Color Accuracy
1.0
6.7
White Balance Screencap
Gamma Curve Screencap
Color Screencap
Avg. White Balance dE
8.58
4.4
Avg. Gamma
2.07
2.12
Avg. Color dE
7.73
2.81
Avg. Color Temperature
6,123.4 K
7,486 K
Color Gamut
4.3
8.5
Gamut SDR
sRGB xy
69.55%
99.98%
sRGB uv
53.15%
99.89%
Adobe RGB xy
52.52%
75.98%
Adobe RGB uv
47.4%
86.67%
Gamut HDR
DCI P3 xy
52.05%
75.74%
DCI P3 uv
43.64%
80.61%
Rec. 2020 xy
37.49%
54.29%
Rec. 2020 uv
32.16%
58.74%
Flicker
10
10
Flicker Graph
Flicker-Free
Yes
Yes
Flicker Frequency
No Flicker
No Flicker
Flicker Active Below
0%
0%
Interface
Keyboard
6.6
5.1
Keyboard Photo
Typing Quality
8.0
6.0
Numpad
Yes
No
Backlighting
No
No
Key Switch Actuation Graph
Operating Force
72 gf
66 gf
Actuation Force
32 gf
36 gf
Pre-Travel
0.91 mm
1.02 mm
Total Travel
1.39 mm
1.48 mm
Touchpad
7.6
4.2
Touchpad Photo
Tracking Quality
8.0
4.0
Size
11.2 in² (72.1 cm²)
6.5 in² (41.9 cm²)
Material
Plastic
Plastic
Dedicated Buttons
No
No
Speakers
7.4
4.6
Frequency Response Plot
Max Volume
68 dB SPL
73 dB SPL
Standard Error @ Normal Vol. (65 dB)
4.9 dB
10.7 dB
Slope @ Normal Vol. (65 dB)
1.8
2.7
Bass Extension (Low-Frequency Ext.)
250 Hz
370 Hz
Treble Extension (High-Frequency Ext.)
19 kHz
20 kHz
Dynamic Range Compression @ Max Vol.
0.3 dB
0.4 dB
Webcam & Microphone
6.6
5.7
Webcam Video Sample
Video Quality
6.0
5.5
Resolution
720p
720p
Position
Top Center
Top Center
Privacy Cover
Yes
No
Face Unlock
No
No
Connectivity
Ports
6.5
1.0
Ports Photo
USB-A Ports
1
0
USB-C Ports
2
1
Thunderbolt
No
No
USB-C Charging
Yes
Yes
USB-C Display Out
Yes
Yes
HDMI
No
No
DisplayPort
No
No
3.5mm Jack
Combo mic/headphone
None
Card Reader
MicroSD UHS 1
No
Ethernet
No
No
Proprietary Port
No
5-Point Pogo Pins for Keyboard
Security Lock
Yes
No
Wireless Communication
Wi-Fi
Wi-Fi 5 (802.11ac)
Wi-Fi 5 (802.11ac)
Bluetooth
4.2
4.2
Configuration
CPU
Brand
Intel
MediaTek
Model
Core i3-8130U
Helio P60T
Core Count
2
8
Thread Count
4
8
GPU
Brand
Intel
ARM
Model
UHD Graphics 620
Mali-G72 MP3
Dedicated/Integrated
Integrated
Integrated
VRAM Size
N/A
N/A
RAM
Capacity
4 GB
4 GB
Modules
1 (Soldered)
2 (Soldered)
Type
DDR4
LP-DDR4X
Speed
2,400 MHz
N/A
Storage
Advertised Capacity
64 GB
64 GB
Usable Capacity
49 GB
46 GB
Drive 1
SanDisk DA4064
KMDV60010A
Drive 1 Type
eMMC
eMMC
Drive 2
No 2nd Drive
No 2nd Drive
Drive 2 Type
No 2nd Drive
No 2nd Drive
Performance
Geekbench 5 (Synthetics)
4.9
2.9
Geekbench Image
CPU Single-Thread
794 points
303 points
CPU Multi-Thread
1,457 points
1,430 points
GPU Compute
N/A
N/A
Cinebench R23 (CPU Rendering)
0.0
0.0
Cinebench R23 Photo
Single-Thread
N/A
N/A
Multi-Thread
N/A
N/A
Blender (3D Rendering)
0.3
0.0
Blender Image
CPU Render Time
20.1 min
N/A
GPU Render Time
N/A
N/A
GPU Render Time (Optix)
N/A
N/A
Basemark GPU (Game Scene)
3.6
1.5
Basemark Image
Overall Score
8,359
3,285
Storage Drive Performance
4.4
3.2
Storage Performance Image
Sequential Write Speed
38.0 MB/s
125.7 MB/s
Sequential Read Speed
249.6 MB/s
163.1 MB/s
Random Write Speed
3.3 MB/s
4.7 MB/s
Random Read Speed
13.0 MB/s
4.1 MB/s
Battery
8.9
8.7
Capacity
56 Wh
27 Wh
Battery Life (Web Browsing)
12.1 hrs
11.9 hrs
Battery Life (Video Playback)
7.9 hrs
6.8 hrs
Battery Life (Gaming)
2.5 hrs
2.7 hrs
Charge Time
2.4 hrs
2.8 hrs
Borderlands 3
0.0
0.0
Borderlands 3 Graph
Avg. FPS
N/A
N/A
1% Low
N/A
N/A
0.1% Low
N/A
N/A
1% Low Delta
N/A
N/A
0.1% Low Delta
N/A
N/A
Avg. FPS On Very Low
N/A
N/A
Civilization VI
0.0
0.0
Civilization VI Graph
Avg. FPS
N/A
N/A
1% Low
N/A
N/A
0.1% Low
N/A
N/A
1% Low Delta
N/A
N/A
0.1% Low Delta
N/A
N/A
Avg. FPS On Minimum
N/A
N/A
Avg. Turn Time
N/A
N/A
Counter-Strike: Global Offensive
0.0
0.0
CS:GO graph
Avg. FPS
N/A
N/A
1% Low
N/A
N/A
0.1% Low
N/A
N/A
1% Low Delta
N/A
N/A
0.1% Low Delta
N/A
N/A
Avg. FPS On Low
N/A
N/A
Counter-Strike 2
CS2 Graph
Avg. FPS
1% Low
0.1% Low
1% Low Delta
0.1% Low Delta
Avg. FPS On Low
Shadow Of The Tomb Raider
0.0
0.0
SOTTR Graph
Avg. FPS
N/A
N/A
1% Low
N/A
N/A
0.1% Low
N/A
N/A
1% Low Delta
N/A
N/A
0.1% Low Delta
N/A
N/A
Avg. FPS On Lowest
N/A
N/A
Thermals And Noise
9.0
10
Keyboard Temps Picture
Keyboard Temp While Idle
24 °C (75 °F)
22 °C (72 °F)
Keyboard Temp Under Load
34 °C (93 °F)
23 °C (74 °F)
Fan Noise While Idle
25.0 dBA
N/A
Fan Noise Under Load
38.8 dBA
N/A
Power & Fan Control App
No
No
Performance Over Time
0.0
0.0
Performance Over Time Graph
Performance Over Time Image
CPU Temp (Cinebench)
N/A
N/A
CPU Perf. Loss (Cinebench)
N/A
N/A
GPU Temp (Heaven)
N/A
N/A
GPU Perf. Loss (Heaven)
N/A
N/A
Additional Features And Software
Software
Operating System
Chrome OS
Chrome OS
Additional Software
None
None
Extra Features
RGB Illumination
No
No
Touch Pen
No
No
Secondary Display
No
No
Biometrics
No
No
You have 10/10 free reviews left
To access
and
Become an Insider
unlimited full product reviews,
product prices
other exclusive site features
Lenovo Chromebook C340 15 (2020)
Lenovo Chromebook Duet (2020)
Comments
Lenovo Chromebook C340 15 (2020) vs Lenovo Chromebook Duet (2020): Main Discussion
What do you think of these products? Let us know below.
Looking for a personalized buying advice from the RTINGS.com experts? Insiders have direct access to buying advice on our insider forum.