Mobility Radeon HD 3870 X2 vs Radeon HD 6950

When comparing Mobility Radeon HD 3870 X2 and Radeon HD 6950, 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 6950 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 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 Radeon HD 6950
Power consumption (TDP) 110 Watt 500 Watt
Interface PCIe 2.0 x16 PCIe 2.0 x16
Supplementary power connectors 2x 6-pin
Memory type GDDR3 GDDR5
Maximum RAM amount 512 MB 2 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon HD 6950 has 354% more power consumption, than Mobility Radeon HD 3870 X2.
  • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
  • Mobility Radeon HD 3870 X2 has 510 GB more memory, than Radeon HD 6950.
  • Mobility Radeon HD 3870 X2 is used in Laptops, and Radeon HD 6950 - in Desktops.
  • Mobility Radeon HD 3870 X2 is build with RV6xx architecture, and Radeon HD 6950 - with TeraScale 3.
  • Mobility Radeon HD 3870 X2 is manufactured by 55 nm process technology, and Radeon HD 6950 - by 40 nm process technology.
  • Memory clock speed of Radeon HD 6950 is 400 MHz higher, than Mobility Radeon HD 3870 X2.

Game benchmarks

high / 1080p 6−7 14−16
ultra / 1080p 4−5 8−9
QHD / 1440p 0−1 3−4
low / 720p 16−18 27−30
medium / 1080p 8−9 16−18
The average gaming FPS of Radeon HD 6950 in Assassin's Creed Odyssey is 88% more, than Mobility Radeon HD 3870 X2.

Full Specs

  Mobility Radeon HD 3870 X2 Radeon HD 6950
Architecture RV6xx TeraScale 3
Code name M88-XT CF Cayman
Type Laptop Desktop
Release date 1 September 2008 14 December 2010
Pipelines 640 1408
Core clock speed 660 MHz
Boost Clock 800 MHz
Transistor count 666 million 2,640 million
Manufacturing process technology 55 nm 40 nm
Texture fill rate 10.56 70.40
Floating-point performance 2x 422.4 gflops 2,252.8 gflops
Length 267 mm
Memory bus width 256 Bit 256 Bit
Memory clock speed 850 MHz 1250 MHz
Memory bandwidth 54.4 GB/s
Shared memory -
DirectX 10.1 (10_1)
Shader Model 4.1 5.0
OpenGL 3.3 4.4
OpenCL N/A 1.2
Vulkan N/A
Bus support PCIe 2.0 x16
HDMI +
Bitcoin / BTC (SHA256) 244 Mh/s
Laptop size large
Eyefinity +
Design reference
CrossFire +
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