Mobility Radeon HD 5870 vs Radeon HD 6870

If you are going to buy a new graphics card and are choosing between Mobility Radeon HD 5870 and Radeon HD 6870, 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 5870 stacks up against Radeon HD 6870, check out specs charts below.

Mobility Radeon HD 5870 is a Laptop Graphics Card

Note: Mobility Radeon HD 5870 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 5870 here:

Main Specs

  Mobility Radeon HD 5870 Radeon HD 6870
Power consumption (TDP) 50 Watt 151 Watt
Interface MXM-B (3.0) PCIe 2.0 x16
Supplementary power connectors 2x 6-pin
Memory type DDR3, GDDR3, GDDR5 GDDR5
Maximum RAM amount 1 GB 1 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon HD 6870 has 202% more power consumption, than Mobility Radeon HD 5870.
  • Mobility Radeon HD 5870 is connected by MXM-B (3.0), and Radeon HD 6870 uses PCIe 2.0 x16 interface.
  • Mobility Radeon HD 5870 and Radeon HD 6870 have maximum RAM of 1 GB.
  • Mobility Radeon HD 5870 is used in Laptops, and Radeon HD 6870 - in Desktops.
  • Mobility Radeon HD 5870 and Radeon HD 6870 are build with Terascale 2 architecture.
  • Mobility Radeon HD 5870 and Radeon HD 6870 are manufactured by 40 nm process technology.
  • Memory clock speed of Radeon HD 6870 is 50 MHz higher, than Mobility Radeon HD 5870.

Game benchmarks

high / 1080p 10−11 10−12
ultra / 1080p 6−7 6−7
QHD / 1440p 0−1 1−2
low / 720p 21−24 24−27
medium / 1080p 12−14 12−14
The average gaming FPS of Radeon HD 6870 in Assassin's Creed Odyssey is 7% more, than Mobility Radeon HD 5870.

Full Specs

  Mobility Radeon HD 5870 Radeon HD 6870
Architecture Terascale 2 Terascale 2
Code name Broadway-XT RV940 Barts
Type Laptop Desktop
Release date 7 January 2010 22 October 2010
Pipelines 800 1120
Core clock speed 700 MHz
Boost Clock 900 MHz
Transistor count 1,040 million 1,700 million
Manufacturing process technology 40 nm 40 nm
Texture fill rate 28.00 50.40
Floating-point performance 1,120.0 gflops 2,016.0 gflops
Length 220 mm
Memory bus width 128 Bit 256 Bit
Memory clock speed 1000 MHz 1050 MHz
Memory bandwidth 64 GB/s 134.4 GB/s
Shared memory - -
DirectX 11.2 (11_0)
Shader Model 5.0 5.0
OpenGL 4.4 4.4
OpenCL 1.2 1.2
Vulkan N/A
Bus support PCIe 2.0 x16
HDMI +
Bitcoin / BTC (SHA256) 213 Mh/s
Laptop size large
Eyefinity +
Design reference
CrossFire +
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