Radeon HD 6970 vs Radeon RX 640

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 6970 and Radeon RX 640. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Radeon HD 6970 and Radeon RX 640. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Radeon RX 640 is a Laptop Graphics Card

Note: Radeon RX 640 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 RX 640 here:

Main Specs

  Radeon HD 6970 Radeon RX 640
Power consumption (TDP) 550 Watt 50 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x8
Supplementary power connectors 1x 6-pin + 1x 8-pin None
Memory type DDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors 2x DVI, 1x HDMI, 2x mini-DisplayPort 1x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon HD 6970 has 1000% more power consumption, than Radeon RX 640.
  • Radeon HD 6970 is connected by PCIe 2.0 x16, and Radeon RX 640 uses PCIe 3.0 x8 interface.
  • Radeon RX 640 has 2 GB more memory, than Radeon HD 6970.
  • Radeon HD 6970 is used in Desktops, and Radeon RX 640 - in Laptops.
  • Radeon HD 6970 is build with Terascale 2 architecture, and Radeon RX 640 - with Polaris.
  • Radeon HD 6970 is manufactured by 40 nm process technology, and Radeon RX 640 - by 14 nm process technology.
  • Memory clock speed of Radeon RX 640 is 4625 MHz higher, than Radeon HD 6970.

Game benchmarks

high / 1080p 14−16 5−6
ultra / 1080p 9−10 3−4
QHD / 1440p 3−4 2−3
low / 720p 30−35 16−18
medium / 1080p 18−20 7−8
The average gaming FPS of Radeon HD 6970 in Assassin's Creed Odyssey is 114% more, than Radeon RX 640.

Full Specs

  Radeon HD 6970 Radeon RX 640
Architecture Terascale 2 Polaris
Code name Cayman Polaris 12
Type Desktop Laptop
Release date 14 December 2010 12 August 2019
Pipelines 1536 640
Core clock speed 1218 MHz
Boost Clock 880 MHz 1218 MHz
Transistor count 2,640 million 2,200 million
Manufacturing process technology 40 nm 14 nm
Texture fill rate 84.48 38.98
Floating-point performance 2,703.4 gflops
Length 267 mm
Memory bus width 256 Bit 64 Bit
Memory clock speed 1375 MHz 6000 MHz
Memory bandwidth 112.0 GB/s
Shared memory -
DirectX 12 (12_0)
Shader Model 5.0 6.4
OpenGL 4.4 4.6
OpenCL 1.2 2.0
Vulkan 1.2.131
FreeSync +
Bus support PCIe 2.0 x16
HDMI +
Bitcoin / BTC (SHA256) 273 Mh/s
Laptop size large
Eyefinity +
Design reference
CrossFire +
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