Radeon HD 6790 vs Radeon HD 7770

If you are going to buy a new graphics card and are choosing between Radeon HD 6790 and Radeon HD 7770, 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 6790 stacks up against Radeon HD 7770, check out specs charts below.

Main Specs

  Radeon HD 6790 Radeon HD 7770
Power consumption (TDP) 150 Watt
Interface PCIe 2.0 x16
Supplementary power connectors 2x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 1 GB 2 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon HD 7770 has 1 GB more memory, than Radeon HD 6790.
  • Both cards are used in Desktops.
  • Radeon HD 6790 is build with Terascale 2 architecture, and Radeon HD 7770 - with GCN.
  • Core clock speed of Radeon HD 7770 is 160 MHz higher, than Radeon HD 6790.
  • Radeon HD 6790 is manufactured by 40 nm process technology, and Radeon HD 7770 - by 28 nm process technology.
  • Memory clock speed of Radeon HD 7770 is 3450 MHz higher, than Radeon HD 6790.

Game benchmarks

high / 1080p 7−8 10−11
ultra / 1080p 4−5 6−7
QHD / 1440p 0−1 1−2
low / 720p 18−20 24−27
medium / 1080p 9−10 12−14
The average gaming FPS of Radeon HD 7770 in Assassin's Creed Odyssey is 30% more, than Radeon HD 6790.

Full Specs

  Radeon HD 6790 Radeon HD 7770
Architecture Terascale 2 GCN
Code name Barts Cape Verde
Type Desktop Desktop
Release date 4 April 2011 15 February 2012
Pipelines 800 640
Core clock speed 840 MHz 1000 MHz
Transistor count 1,700 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 33.60
Floating-point performance 1,344.0 gflops
Length 198 mm
Memory bus width 256 Bit 128 Bit
Memory clock speed 1050 MHz 4500 MHz
Memory bandwidth 134.4 GB/s
Shared memory -
DirectX 11.2 (11_0) DirectX 11.1, Shader 5.1
Shader Model 5.0
OpenGL 4.4
OpenCL 1.2
Vulkan N/A
Bitcoin / BTC (SHA256) 122 Mh/s 156 Mh/s
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