Mobility Radeon HD 4870 X2 vs Radeon HD 7950

When comparing Mobility Radeon HD 4870 X2 and Radeon HD 7950, 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 4870 X2 and Radeon HD 7950 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Mobility Radeon HD 4870 X2 is a Laptop Graphics Card

Note: Mobility Radeon HD 4870 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 4870 X2 here:

Main Specs

  Mobility Radeon HD 4870 X2 Radeon HD 7950
Power consumption (TDP) 200 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x16
Supplementary power connectors 2x 6-pin
Memory type GDDR3, GDDR5 GDDR5
Maximum RAM amount 2 GB 3 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Mobility Radeon HD 4870 X2 is connected by PCIe 2.0 x16, and Radeon HD 7950 uses PCIe 3.0 x16 interface.
  • Radeon HD 7950 has 1 GB more memory, than Mobility Radeon HD 4870 X2.
  • Mobility Radeon HD 4870 X2 is used in Laptops, and Radeon HD 7950 - in Desktops.
  • Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Radeon HD 7950 - with GCN 1.0.
  • Mobility Radeon HD 4870 X2 is manufactured by 55 nm process technology, and Radeon HD 7950 - by 28 nm process technology.
  • Memory clock speed of Radeon HD 7950 is 362 MHz higher, than Mobility Radeon HD 4870 X2.

Game benchmarks

high / 1080p 9−10 35−40
ultra / 1080p 5−6 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 21−24 60−65
medium / 1080p 12−14 40−45
The average gaming FPS of Radeon HD 7950 in Assassin's Creed Odyssey is 241% more, than Mobility Radeon HD 4870 X2.

Full Specs

  Mobility Radeon HD 4870 X2 Radeon HD 7950
Architecture Terascale 1 GCN 1.0
Code name M98-XT Tahiti
Type Laptop Desktop
Release date 9 January 2009 31 January 2012
Pipelines 1600 1792
Core clock speed 550 MHz
Boost Clock 1250 MHz
Transistor count 956 million 4,313 million
Manufacturing process technology 55 nm 28 nm
Texture fill rate 22.00 89.60
Floating-point performance 2x 880.0 gflops 2,867 gflops
Length 267 mm
Memory bus width 256 Bit 384 Bit
Memory clock speed 888 MHz 1250 MHz
Memory bandwidth 89.6 GB/s 240 GB/s
Shared memory -
DirectX 10.1 (10_1)
Shader Model 4.1 5.1
OpenGL 3.3 4.6
OpenCL 1.1 1.2
Vulkan N/A
Monero / XMR (CryptoNight) 0.56 kh/s
FreeSync +
Bus support PCIe 3.0 x16
HDMI +
Bitcoin / BTC (SHA256) 381 Mh/s
Laptop size large
Eyefinity +
PowerTune +
ZeroCore +
Design reference
Number of Eyefinity displays 6
CrossFire +
Decred / DCR (Decred) 0.78 Gh/s
Ethereum / ETH (DaggerHashimoto) 13.86 Mh/s
Zcash / ZEC (Equihash) 250 Sol/s
Compute units 28
AppAcceleration +
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