Mobility Radeon HD 4870 X2 vs Radeon HD 4870 X2

If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 4870 X2 and Radeon HD 4870 X2, 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 4870 X2 stacks up against Radeon HD 4870 X2, check out specs charts below.

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 4870 X2
Power consumption (TDP) 286 Watt
Interface PCIe 2.0 x16 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin + 1x 8-pin
Memory type GDDR3, GDDR5 GDDR5
Maximum RAM amount 2 GB 1 GB
Display Connectors No outputs 2x DVI, 1x S-Video
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  • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
  • Mobility Radeon HD 4870 X2 has 1 GB more memory, than Radeon HD 4870 X2.
  • Mobility Radeon HD 4870 X2 is used in Laptops, and Radeon HD 4870 X2 - in Desktops.
  • Mobility Radeon HD 4870 X2 is build with Terascale 1 architecture, and Radeon HD 4870 X2 - with TeraScale.
  • Core clock speed of Radeon HD 4870 X2 is 150 MHz higher, than Mobility Radeon HD 4870 X2.
  • Mobility Radeon HD 4870 X2 and Radeon HD 4870 X2 are manufactured by 55 nm process technology.
  • Memory clock speed of Radeon HD 4870 X2 is 2712 MHz higher, than Mobility Radeon HD 4870 X2.

Game benchmarks

high / 1080p 9−10 3−4
ultra / 1080p 5−6 1−2
QHD / 1440p 0−1 0−1
low / 720p 21−24 14−16
medium / 1080p 12−14 6−7
The average gaming FPS of Mobility Radeon HD 4870 X2 in Assassin's Creed Odyssey is 100% more, than Radeon HD 4870 X2.

Full Specs

  Mobility Radeon HD 4870 X2 Radeon HD 4870 X2
Architecture Terascale 1 TeraScale
Code name M98-XT R700
Type Laptop Desktop
Release date 9 January 2009 12 August 2008
Pipelines 1600 800
Core clock speed 550 MHz 700 MHz
Transistor count 956 million 956 million
Manufacturing process technology 55 nm 55 nm
Texture fill rate 22.00 28.00
Floating-point performance 2x 880.0 gflops 2x 1,120.0 gflops
Length 267 mm
Memory bus width 256 Bit 256 Bit
Memory clock speed 888 MHz 3600 MHz
Memory bandwidth 89.6 GB/s 115.2 GB/s
Shared memory -
DirectX 10.1 (10_1) 10.1 (10_1)
Shader Model 4.1 4.1
OpenGL 3.3 3.3
OpenCL 1.1 1.1
Vulkan N/A N/A
Laptop size large
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