Mobility Radeon HD 3870 X2 vs Radeon HD 7970M
If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 3870 X2 and Radeon HD 7970M, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Mobility Radeon HD 3870 X2 stacks up against Radeon HD 7970M, check out specs charts below.
Mobility Radeon HD 3870 X2 and Radeon HD 7970M are Laptop Graphics Cards
Note: Mobility Radeon HD 3870 X2 and Radeon HD 7970M 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 7970M here:
Main Specs
Mobility Radeon HD 3870 X2
Radeon HD 7970M
Power consumption (TDP)
110 Watt
100 Watt
Interface
PCIe 2.0 x16
MXM-B (3.0)
Supplementary power connectors
None
Memory type
GDDR3
GDDR5
Maximum RAM amount
512 MB
2 GB
Display Connectors
No outputs
No outputs
Check Price
Check Price
Mobility Radeon HD 3870 X2 has 10% more power consumption, than Radeon HD 7970M.
Mobility Radeon HD 3870 X2 is connected by PCIe 2.0 x16, and Radeon HD 7970M uses MXM-B (3.0) interface.
Mobility Radeon HD 3870 X2 has 510 GB more memory, than Radeon HD 7970M.
Both cards are used in Laptops.
Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Radeon HD 7970M - with GCN.
Core clock speed of Radeon HD 7970M is 190 MHz higher, than Mobility Radeon HD 3870 X2.
Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Radeon HD 7970M - by 28 nm process technology.
Memory clock speed of Radeon HD 7970M is 3950 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
18−20
ultra / 1080p
4−5
10−12
QHD / 1440p
0−1
5−6
4K / 2160p
−
4−5
low / 720p
16−18
35−40
medium / 1080p
8−9
21−24
The average gaming FPS of Radeon HD 7970M in Assassin's Creed Odyssey is 144% more, than Mobility Radeon HD 3870 X2.
high / 1080p
12−14
27−30
ultra / 1080p
10−11
24−27
QHD / 1440p
0−1
9−10
4K / 2160p
−
6−7
low / 720p
24−27
60−65
medium / 1080p
12−14
30−35
The average gaming FPS of Radeon HD 7970M in Battlefield 5 is 146% more, than Mobility Radeon HD 3870 X2.
low / 768p
45−50
50−55
high / 1080p
45−50
−
QHD / 1440p
0−1
0−1
The average gaming FPS of Radeon HD 7970M in Call of Duty: Warzone is 10% more, than Mobility Radeon HD 3870 X2.
low / 768p
130−140
220−230
medium / 768p
110−120
190−200
ultra / 1080p
50−55
110−120
QHD / 1440p
27−30
75−80
4K / 2160p
27−30
40−45
high / 768p
80−85
160−170
The average gaming FPS of Radeon HD 7970M in Counter-Strike: Global Offensive is 86% more, than Mobility Radeon HD 3870 X2.
low / 768p
55−60
60−65
ultra / 1080p
18−20
45−50
medium / 1080p
45−50
55−60
The average gaming FPS of Radeon HD 7970M in Cyberpunk 2077 is 34% more, than Mobility Radeon HD 3870 X2.
low / 768p
80−85
110−120
medium / 768p
55−60
100−110
ultra / 1080p
30−35
75−80
The average gaming FPS of Radeon HD 7970M in Dota 2 is 73% more, than Mobility Radeon HD 3870 X2.
high / 1080p
8−9
21−24
ultra / 1080p
7−8
20−22
QHD / 1440p
−
18−20
4K / 2160p
3−4
7−8
low / 720p
18−20
45−50
medium / 1080p
8−9
24−27
The average gaming FPS of Radeon HD 7970M in Far Cry 5 is 166% more, than Mobility Radeon HD 3870 X2.
high / 1080p
14−16
30−33
ultra / 1080p
10−11
21−24
QHD / 1440p
−
14−16
low / 720p
60−65
110−120
medium / 1080p
21−24
65−70
The average gaming FPS of Radeon HD 7970M in Fortnite is 118% more, than Mobility Radeon HD 3870 X2.
high / 1080p
12−14
30−35
ultra / 1080p
10−12
24−27
QHD / 1440p
1−2
12−14
4K / 2160p
−
12−14
low / 720p
24−27
60−65
medium / 1080p
14−16
35−40
The average gaming FPS of Radeon HD 7970M in Forza Horizon 4 is 161% more, than Mobility Radeon HD 3870 X2.
low / 768p
50−55
95−100
medium / 768p
45−50
85−90
high / 1080p
12−14
35−40
ultra / 1080p
6−7
14−16
QHD / 1440p
0−1
5−6
The average gaming FPS of Radeon HD 7970M in Grand Theft Auto V is 103% more, than Mobility Radeon HD 3870 X2.
high / 1080p
4−5
12−14
ultra / 1080p
3−4
9−10
4K / 2160p
0−1
2−3
low / 720p
12−14
35−40
medium / 1080p
6−7
16−18
The average gaming FPS of Radeon HD 7970M in Metro Exodus is 216% more, than Mobility Radeon HD 3870 X2.
low / 768p
95−100
110−120
high / 1080p
85−90
−
ultra / 1080p
80−85
−
medium / 1080p
90−95
110−120
The average gaming FPS of Radeon HD 7970M in Minecraft is 21% more, than Mobility Radeon HD 3870 X2.
high / 1080p
16−18
−
ultra / 1080p
14−16
14−16
low / 720p
30−35
65−70
medium / 1080p
18−20
18−20
The average gaming FPS of Radeon HD 7970M in PLAYERUNKNOWN'S BATTLEGROUNDS is 50% more, than Mobility Radeon HD 3870 X2.
high / 1080p
−
14−16
ultra / 1080p
7−8
9−10
QHD / 1440p
0−1
0−1
low / 720p
12−14
35−40
medium / 1080p
10−12
18−20
The average gaming FPS of Radeon HD 7970M in Red Dead Redemption 2 is 120% more, than Mobility Radeon HD 3870 X2.
low / 768p
24−27
65−70
medium / 768p
16−18
40−45
high / 1080p
9−10
21−24
ultra / 1080p
6−7
12−14
4K / 2160p
6−7
7−8
The average gaming FPS of Radeon HD 7970M in The Witcher 3: Wild Hunt is 130% more, than Mobility Radeon HD 3870 X2.
low / 768p
85−90
90−95
medium / 768p
45−50
60−65
ultra / 1080p
18−20
40−45
high / 768p
35−40
55−60
The average gaming FPS of Radeon HD 7970M in World of Tanks is 34% more, than Mobility Radeon HD 3870 X2.
Full Specs
Mobility Radeon HD 3870 X2
Radeon HD 7970M
Architecture
RV6xx
GCN
Code name
M88-XT CF
Wimbledon XT
Type
Laptop
Laptop
Release date
1 September 2008
1 May 2012
Pipelines
640
1280
Core clock speed
660 MHz
850 MHz
Transistor count
666 million
2,800 million
Manufacturing process technology
55 nm
28 nm
Texture fill rate
10.56
68.00
Floating-point performance
2x 422.4 gflops
2,176 gflops
Memory bus width
256 Bit
256 Bit
Memory clock speed
850 MHz
4800 MHz
Memory bandwidth
54.4 GB/s
153.6 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
Bitcoin / BTC (SHA256)
254 Mh/s
Laptop size
large
large
Check Price
Check Price
