Radeon HD 6930 vs Radeon HD 7990

If you are going to buy a new graphics card and are choosing between Radeon HD 6930 and Radeon HD 7990, 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 6930 stacks up against Radeon HD 7990, check out specs charts below.

Main Specs

  Radeon HD 6930 Radeon HD 7990
Power consumption (TDP) 186 Watt 375 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x16
Supplementary power connectors 2x 6-pin 2x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 1 GB 3 GB
Display Connectors 2x DVI, 1x HDMI, 2x mini-DisplayPort 1x DVI, 4x mini-DisplayPort
  Check Price Check Price
  • Radeon HD 7990 has 101% more power consumption, than Radeon HD 6930.
  • Radeon HD 6930 is connected by PCIe 2.0 x16, and Radeon HD 7990 uses PCIe 3.0 x16 interface.
  • Radeon HD 7990 has 2 GB more memory, than Radeon HD 6930.
  • Both cards are used in Desktops.
  • Radeon HD 6930 is build with TeraScale 3 architecture, and Radeon HD 7990 - with GCN 1.0.
  • Core clock speed of Radeon HD 7990 is 200 MHz higher, than Radeon HD 6930.
  • Radeon HD 6930 is manufactured by 40 nm process technology, and Radeon HD 7990 - by 28 nm process technology.
  • Radeon HD 7990 is 87 mm longer, than Radeon HD 6930.
  • Memory clock speed of Radeon HD 7990 is 1200 MHz higher, than Radeon HD 6930.

Game benchmarks

high / 1080p 9−10 35−40
ultra / 1080p 5−6 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 21−24 60−65
medium / 1080p 10−12 40−45
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 241% more, than Radeon HD 6930.

Full Specs

  Radeon HD 6930 Radeon HD 7990
Architecture TeraScale 3 GCN 1.0
Code name Cayman Malta
Type Desktop Desktop
Release date 1 December 2011 24 April 2013
Pipelines 1280 2048
Core clock speed 750 MHz 950 MHz
Boost Clock 1000 MHz
Transistor count 2,640 million 4,313 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 60.00 128.0
Floating-point performance 1,920.0 gflops 2x 4,096 gflops
Length 220 mm 307 mm
Memory bus width 256 Bit 384 Bit
Memory clock speed 4800 MHz 6000 MHz
Memory bandwidth 153.6 GB/s 288.0 GB/s
DirectX 11.2 (11_0) 12 (11_1)
Shader Model 5.0 5.1
OpenGL 4.4 4.6
OpenCL 1.2 1.2
Vulkan N/A 1.2.131
Bitcoin / BTC (SHA256) 459 Mh/s
Ethereum / ETH (DaggerHashimoto) 44 Mh/s
  Check Price Check Price