GeForce GT 640 vs Radeon HD 6970

When comparing GeForce GT 640 and Radeon HD 6970, 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 GeForce GT 640 and Radeon HD 6970 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Main Specs

  GeForce GT 640 Radeon HD 6970
Power consumption (TDP) 65 Watt 550 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors None 1x 6-pin + 1x 8-pin
Memory type DDR3 DDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort 2x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon HD 6970 has 746% more power consumption, than GeForce GT 640.
  • GeForce GT 640 is connected by PCIe 3.0 x16, and Radeon HD 6970 uses PCIe 2.0 x16 interface.
  • GeForce GT 640 and Radeon HD 6970 have maximum RAM of 2 GB.
  • Both cards are used in Desktops.
  • GeForce GT 640 is build with Kepler architecture, and Radeon HD 6970 - with Terascale 2.
  • GeForce GT 640 is manufactured by 28 nm process technology, and Radeon HD 6970 - by 40 nm process technology.
  • Radeon HD 6970 is 122 mm longer, than GeForce GT 640.
  • Memory clock speed of GeForce GT 640 is 407 MHz higher, than Radeon HD 6970.

Game benchmarks

high / 1080p 2−3 14−16
ultra / 1080p 1−2 9−10
QHD / 1440p 0−1 3−4
low / 720p 14−16 30−35
medium / 1080p 5−6 18−20
The average gaming FPS of Radeon HD 6970 in Assassin's Creed Odyssey is 216% more, than GeForce GT 640.

Full Specs

  GeForce GT 640 Radeon HD 6970
Architecture Kepler Terascale 2
Code name GK107 Cayman
Type Desktop Desktop
Release date 5 June 2012 14 December 2010
Pipelines 384 1536
Core clock speed 902 MHz
Boost Clock 880 MHz
Transistor count 1,270 million 2,640 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 28.86 84.48
Floating-point performance 692.7 gflops 2,703.4 gflops
Length 145 mm 267 mm
Memory bus width 128 Bit 256 Bit
Memory clock speed 1782 MHz 1375 MHz
Memory bandwidth 28.51 GB/s
DirectX 12 (11_0)
Shader Model 5.1 5.0
OpenGL 4.6 4.4
OpenCL 1.2 1.2
Vulkan 1.1.126
CUDA 3.0
Bus support PCIe 2.0 x16
HDMI +
Bitcoin / BTC (SHA256) 24 Mh/s 273 Mh/s
Eyefinity +
Design reference
CrossFire +
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