Mobility Radeon HD 3870 X2 vs Radeon HD 7850M
When comparing Mobility Radeon HD 3870 X2 and Radeon HD 7850M, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between Mobility Radeon HD 3870 X2 and Radeon HD 7850M is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.
Mobility Radeon HD 3870 X2 and Radeon HD 7850M are Laptop Graphics Cards
Note: Mobility Radeon HD 3870 X2 and Radeon HD 7850M are only used in laptop graphics. They have 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 or Radeon HD 7850M here:
Main Specs
Mobility Radeon HD 3870 X2
Radeon HD 7850M
Power consumption (TDP)
110 Watt
40 Watt
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Memory type
GDDR3
GDDR5
Maximum RAM amount
512 MB
2 GB
Display Connectors
No outputs
No outputs
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Mobility Radeon HD 3870 X2 has 175% more power consumption, than Radeon HD 7850M.
Mobility Radeon HD 3870 X2 is connected by PCIe 2.0 x16, and Radeon HD 7850M uses PCIe 3.0 x16 interface.
Mobility Radeon HD 3870 X2 has 510 GB more memory, than Radeon HD 7850M.
Both cards are used in Laptops.
Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Radeon HD 7850M - with GCN.
Core clock speed of Radeon HD 7850M is 15 MHz higher, than Mobility Radeon HD 3870 X2.
Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Radeon HD 7850M - by 28 nm process technology.
Memory clock speed of Radeon HD 7850M is 3150 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
6−7
ultra / 1080p
4−5
3−4
QHD / 1440p
0−1
0−1
low / 720p
16−18
14−16
medium / 1080p
8−9
7−8
The average gaming FPS of Mobility Radeon HD 3870 X2 in Assassin's Creed Odyssey is 12% more, than Radeon HD 7850M.
high / 1080p
12−14
10−12
ultra / 1080p
10−11
9−10
QHD / 1440p
0−1
0−1
low / 720p
24−27
21−24
medium / 1080p
12−14
10−12
The average gaming FPS of Mobility Radeon HD 3870 X2 in Battlefield 5 is 15% more, than Radeon HD 7850M.
low / 768p
45−50
45−50
high / 1080p
45−50
45−50
QHD / 1440p
0−1
0−1
Mobility Radeon HD 3870 X2 and Radeon HD 7850M have the same average FPS in Call of Duty: Warzone.
low / 768p
130−140
120−130
medium / 768p
110−120
100−110
ultra / 1080p
50−55
50−55
QHD / 1440p
27−30
27−30
4K / 2160p
27−30
−
high / 768p
80−85
75−80
The average gaming FPS of Mobility Radeon HD 3870 X2 in Counter-Strike: Global Offensive is 6% more, than Radeon HD 7850M.
low / 768p
55−60
55−60
ultra / 1080p
18−20
16−18
medium / 1080p
45−50
45−50
The average gaming FPS of Mobility Radeon HD 3870 X2 in Cyberpunk 2077 is 2% more, than Radeon HD 7850M.
low / 768p
80−85
80−85
medium / 768p
55−60
55−60
ultra / 1080p
30−35
30−35
Mobility Radeon HD 3870 X2 and Radeon HD 7850M have the same average FPS in Dota 2.
high / 1080p
8−9
7−8
ultra / 1080p
7−8
7−8
4K / 2160p
3−4
3−4
low / 720p
18−20
16−18
medium / 1080p
8−9
8−9
The average gaming FPS of Mobility Radeon HD 3870 X2 in Far Cry 5 is 12% more, than Radeon HD 7850M.
high / 1080p
14−16
14−16
ultra / 1080p
10−11
10−11
low / 720p
60−65
55−60
medium / 1080p
21−24
20−22
The average gaming FPS of Mobility Radeon HD 3870 X2 in Fortnite is 3% more, than Radeon HD 7850M.
high / 1080p
12−14
10−11
ultra / 1080p
10−12
−
QHD / 1440p
1−2
−
4K / 2160p
−
8−9
low / 720p
24−27
24−27
medium / 1080p
14−16
12−14
The average gaming FPS of Mobility Radeon HD 3870 X2 in Forza Horizon 4 is 6% more, than Radeon HD 7850M.
low / 768p
50−55
50−55
medium / 768p
45−50
40−45
high / 1080p
12−14
10−12
ultra / 1080p
6−7
6−7
QHD / 1440p
0−1
0−1
The average gaming FPS of Mobility Radeon HD 3870 X2 in Grand Theft Auto V is 3% more, than Radeon HD 7850M.
high / 1080p
4−5
4−5
ultra / 1080p
3−4
3−4
4K / 2160p
0−1
0−1
low / 720p
12−14
10−12
medium / 1080p
6−7
6−7
Mobility Radeon HD 3870 X2 and Radeon HD 7850M have the same average FPS in Metro Exodus.
low / 768p
95−100
90−95
high / 1080p
85−90
85−90
ultra / 1080p
80−85
75−80
medium / 1080p
90−95
90−95
The average gaming FPS of Mobility Radeon HD 3870 X2 in Minecraft is 3% more, than Radeon HD 7850M.
high / 1080p
16−18
16−18
ultra / 1080p
14−16
14−16
low / 720p
30−35
30−33
medium / 1080p
18−20
16−18
Mobility Radeon HD 3870 X2 and Radeon HD 7850M have the same average FPS in PLAYERUNKNOWN'S BATTLEGROUNDS.
ultra / 1080p
7−8
7−8
QHD / 1440p
0−1
0−1
low / 720p
12−14
10−12
medium / 1080p
10−12
10−11
The average gaming FPS of Mobility Radeon HD 3870 X2 in Red Dead Redemption 2 is 11% more, than Radeon HD 7850M.
low / 768p
24−27
21−24
medium / 768p
16−18
14−16
high / 1080p
9−10
8−9
ultra / 1080p
6−7
6−7
4K / 2160p
6−7
−
The average gaming FPS of Mobility Radeon HD 3870 X2 in The Witcher 3: Wild Hunt is 7% more, than Radeon HD 7850M.
low / 768p
85−90
85−90
medium / 768p
45−50
40−45
ultra / 1080p
18−20
18−20
high / 768p
35−40
35−40
The average gaming FPS of Mobility Radeon HD 3870 X2 in World of Tanks is 2% more, than Radeon HD 7850M.
Full Specs
Mobility Radeon HD 3870 X2
Radeon HD 7850M
Architecture
RV6xx
GCN
Code name
M88-XT CF
Heathrow Pro
Type
Laptop
Laptop
Release date
1 September 2008
24 April 2012
Pipelines
640
640
Core clock speed
660 MHz
675 MHz
Transistor count
666 million
1,500 million
Manufacturing process technology
55 nm
28 nm
Texture fill rate
10.56
27.00
Floating-point performance
2x 422.4 gflops
864.0 gflops
Memory bus width
256 Bit
128 Bit
Memory clock speed
850 MHz
4000 MHz
Memory bandwidth
54.4 GB/s
64 GB/s
Shared memory
-
-
DirectX
10.1 (10_1)
12 (11_1)
Shader Model
4.1
5.1
OpenGL
3.3
4.6
OpenCL
N/A
1.2
Vulkan
N/A
1.2.131
Laptop size
large
large
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