Radeon HD 6970M Crossfire vs Radeon R9 390X

If you are going to buy a new graphics card and are choosing between Radeon HD 6970M Crossfire and Radeon R9 390X, 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 Radeon HD 6970M Crossfire stacks up against Radeon R9 390X, check out specs charts below.

Radeon HD 6970M Crossfire is a Laptop Graphics Card

Note: Radeon HD 6970M Crossfire 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 Radeon HD 6970M Crossfire here:

Main Specs

  Radeon HD 6970M Crossfire Radeon R9 390X
Power consumption (TDP) 275 Watt
Interface PCIe 3.0 x16
Supplementary power connectors 1 x 6-pin, 1 x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2x2 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon HD 6970M Crossfire is used in Laptops, and Radeon R9 390X - in Desktops.
  • Radeon HD 6970M Crossfire is build with Terascale 2 architecture, and Radeon R9 390X - with GCN.
  • Radeon HD 6970M Crossfire is manufactured by 40 nm process technology, and Radeon R9 390X - by 28 nm process technology.
  • Memory clock speed of Radeon R9 390X is 150 MHz higher, than Radeon HD 6970M Crossfire.

Game benchmarks

high / 1080p 21−24 50−55
ultra / 1080p 12−14 30−35
QHD / 1440p 7−8 24−27
4K / 2160p 5−6 14−16
low / 720p 40−45 75−80
medium / 1080p 24−27 55−60
The average gaming FPS of Radeon R9 390X in Assassin's Creed Odyssey is 126% more, than Radeon HD 6970M Crossfire.

Full Specs

  Radeon HD 6970M Crossfire Radeon R9 390X
Architecture Terascale 2 GCN
Code name Blackcomb XT Grenada XT
Type Laptop Desktop
Release date 6 January 2011 16 June 2015
Pipelines 1920 2816
Core clock speed 680 MHz
Boost Clock 1050 MHz
Transistor count 2x1700 Million 6,200 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 184.8
Floating-point performance 5,914 gflops
Length 275 mm
Memory bus width 256 Bit 512 Bit
Memory clock speed 900 MHz 1050 MHz
Memory bandwidth 384 GB/s
Shared memory - -
DirectX DirectX 11, Shader 5.0
Shader Model 6.3
OpenGL 4.6
OpenCL 2.0
Vulkan +
FreeSync +
Bus support PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 684 Mh/s
Laptop size large
Eyefinity +
PowerTune +
TrueAudio +
Mantle +
Design reference
Bridgeless CrossFire +
Number of Eyefinity displays 6
DisplayPort support +
CrossFire +
VCE +
DDMA audio +
Ethereum / ETH (DaggerHashimoto) 27.5 Mh/s
High bandwidth memory (HBM) -
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