Mobility Radeon HD 3870 X2 vs Quadro K420
When choosing between Mobility Radeon HD 3870 X2 and Quadro K420, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between Mobility Radeon HD 3870 X2 and Quadro K420.
Mobility Radeon HD 3870 X2 is a Laptop Graphics Card
Note: Mobility Radeon HD 3870 X2 is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Mobility Radeon HD 3870 X2 here:
Main Specs
Mobility Radeon HD 3870 X2
Quadro K420
Power consumption (TDP)
110 Watt
41 Watt
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
Memory type
GDDR3
128 Bit
Maximum RAM amount
512 MB
1 GB/2 GB
Display Connectors
No outputs
1x DVI, 1x DisplayPort
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Mobility Radeon HD 3870 X2 has 168% more power consumption, than Quadro K420.
Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
Mobility Radeon HD 3870 X2 has 511 GB more memory, than Quadro K420.
Mobility Radeon HD 3870 X2 is used in Laptops, and Quadro K420 - in Desktops.
Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Quadro K420 - with Kepler.
Core clock speed of Quadro K420 is 216 MHz higher, than Mobility Radeon HD 3870 X2.
Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Quadro K420 - by 28 nm process technology.
Memory clock speed of Quadro K420 is 932 MHz higher, than Mobility Radeon HD 3870 X2.
Game benchmarks
Assassin's Creed Odyssey
Battlefield 5
Call of Duty: Warzone
Counter-Strike: Global Offensive
Cyberpunk 2077
Dota 2
Far Cry 5
Fortnite
Forza Horizon 4
Grand Theft Auto V
Metro Exodus
Minecraft
PLAYERUNKNOWN'S BATTLEGROUNDS
Red Dead Redemption 2
The Witcher 3: Wild Hunt
World of Tanks
high / 1080p
6−7
0−1
ultra / 1080p
4−5
0−1
QHD / 1440p
0−1
0−1
low / 720p
16−18
9−10
medium / 1080p
8−9
1−2
The average gaming FPS of Mobility Radeon HD 3870 X2 in Assassin's Creed Odyssey is 140% more, than Quadro K420.
high / 1080p
12−14
−
ultra / 1080p
10−11
1−2
QHD / 1440p
0−1
0−1
low / 720p
24−27
9−10
medium / 1080p
12−14
2−3
The average gaming FPS of Mobility Radeon HD 3870 X2 in Battlefield 5 is 300% more, than Quadro K420.
low / 768p
45−50
50−55
high / 1080p
45−50
45−50
QHD / 1440p
0−1
0−1
The average gaming FPS of Quadro K420 in Call of Duty: Warzone is 6% more, than Mobility Radeon HD 3870 X2.
low / 768p
130−140
100−110
medium / 768p
110−120
75−80
ultra / 1080p
50−55
30−35
QHD / 1440p
27−30
−
4K / 2160p
27−30
9−10
high / 768p
80−85
50−55
The average gaming FPS of Mobility Radeon HD 3870 X2 in Counter-Strike: Global Offensive is 49% more, than Quadro K420.
low / 768p
55−60
70−75
ultra / 1080p
18−20
10−12
medium / 1080p
45−50
45−50
The average gaming FPS of Quadro K420 in Cyberpunk 2077 is 4% more, than Mobility Radeon HD 3870 X2.
low / 768p
80−85
65−70
medium / 768p
55−60
35−40
ultra / 1080p
30−35
14−16
The average gaming FPS of Mobility Radeon HD 3870 X2 in Dota 2 is 42% more, than Quadro K420.
high / 1080p
8−9
1−2
ultra / 1080p
7−8
−
4K / 2160p
3−4
0−1
low / 720p
18−20
7−8
medium / 1080p
8−9
2−3
The average gaming FPS of Mobility Radeon HD 3870 X2 in Far Cry 5 is 300% more, than Quadro K420.
high / 1080p
14−16
−
ultra / 1080p
10−11
−
QHD / 1440p
−
0−1
low / 720p
60−65
40−45
medium / 1080p
21−24
4−5
The average gaming FPS of Mobility Radeon HD 3870 X2 in Fortnite is 82% more, than Quadro K420.
high / 1080p
12−14
1−2
ultra / 1080p
10−12
−
QHD / 1440p
1−2
0−1
low / 720p
24−27
10−12
medium / 1080p
14−16
3−4
The average gaming FPS of Mobility Radeon HD 3870 X2 in Forza Horizon 4 is 240% more, than Quadro K420.
low / 768p
50−55
35−40
medium / 768p
45−50
−
high / 1080p
12−14
1−2
ultra / 1080p
6−7
−
QHD / 1440p
0−1
0−1
medium / 720p
−
30−35
The average gaming FPS of Mobility Radeon HD 3870 X2 in Grand Theft Auto V is 68% more, than Quadro K420.
high / 1080p
4−5
0−1
ultra / 1080p
3−4
0−1
4K / 2160p
0−1
0−1
low / 720p
12−14
1−2
medium / 1080p
6−7
−
The average gaming FPS of Mobility Radeon HD 3870 X2 in Metro Exodus is 1200% more, than Quadro K420.
low / 768p
95−100
85−90
high / 1080p
85−90
50−55
ultra / 1080p
80−85
−
medium / 1080p
90−95
−
The average gaming FPS of Mobility Radeon HD 3870 X2 in Minecraft is 31% more, than Quadro K420.
high / 1080p
16−18
14−16
ultra / 1080p
14−16
12−14
low / 720p
30−35
21−24
medium / 1080p
18−20
14−16
The average gaming FPS of Mobility Radeon HD 3870 X2 in PLAYERUNKNOWN'S BATTLEGROUNDS is 25% more, than Quadro K420.
ultra / 1080p
7−8
−
QHD / 1440p
0−1
0−1
low / 720p
12−14
2−3
medium / 1080p
10−12
−
The average gaming FPS of Mobility Radeon HD 3870 X2 in Red Dead Redemption 2 is 550% more, than Quadro K420.
low / 768p
24−27
4−5
medium / 768p
16−18
−
high / 1080p
9−10
2−3
ultra / 1080p
6−7
−
4K / 2160p
6−7
0−1
The average gaming FPS of Mobility Radeon HD 3870 X2 in The Witcher 3: Wild Hunt is 466% more, than Quadro K420.
low / 768p
85−90
65−70
medium / 768p
45−50
30−35
ultra / 1080p
18−20
10−12
high / 768p
35−40
27−30
The average gaming FPS of Mobility Radeon HD 3870 X2 in World of Tanks is 38% more, than Quadro K420.
Full Specs
Mobility Radeon HD 3870 X2
Quadro K420
Architecture
RV6xx
Kepler
Code name
M88-XT CF
GK107
Type
Laptop
Workstation
Release date
1 September 2008
22 July 2014
Pipelines
640
192
Core clock speed
660 MHz
876 MHz
Transistor count
666 million
1,270 million
Manufacturing process technology
55 nm
28 nm
Texture fill rate
10.56
14.02
Floating-point performance
2x 422.4 gflops
336.4 gflops
Length
160 mm
Memory bus width
256 Bit
128 Bit
Memory clock speed
850 MHz
1782 MHz
Memory bandwidth
54.4 GB/s
Shared memory
-
DirectX
10.1 (10_1)
12
Shader Model
4.1
5
OpenGL
3.3
4.5
OpenCL
N/A
1.2
Vulkan
N/A
+
CUDA
3.0
Bitcoin / BTC (SHA256)
11 Mh/s
Laptop size
large
3D Vision Pro
+
Mosaic
+
Width
1" (2.5 cm)
Number of simultaneous displays
4
nView Desktop Management
+
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