Radeon HD 6770 vs Radeon HD 7770

If you are going to buy a new graphics card and are choosing between Radeon HD 6770 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 6770 stacks up against Radeon HD 7770, check out specs charts below.

Main Specs

  Radeon HD 6770 Radeon HD 7770
Power consumption (TDP) 108 Watt
Interface PCIe 2.0 x16
Supplementary power connectors 1x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 1 GB 2 GB
Display Connectors 2x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon HD 7770 has 1 GB more memory, than Radeon HD 6770.
  • Both cards are used in Desktops.
  • Radeon HD 6770 is build with TeraScale 2 architecture, and Radeon HD 7770 - with GCN.
  • Radeon HD 6770 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 6770.

Game benchmarks

high / 1080p 3−4 10−11
ultra / 1080p 1−2 6−7
QHD / 1440p 0−1 1−2
low / 720p 14−16 24−27
medium / 1080p 5−6 12−14
The average gaming FPS of Radeon HD 7770 in Assassin's Creed Odyssey is 116% more, than Radeon HD 6770.

Full Specs

  Radeon HD 6770 Radeon HD 7770
Architecture TeraScale 2 GCN
Code name Juniper Cape Verde
Type Desktop Desktop
Release date 21 January 2011 15 February 2012
Pipelines 800 640
Core clock speed 1000 MHz
Boost Clock 900 MHz
Transistor count 1,040 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 34.00
Floating-point performance 1,360.0 gflops
Length 198 mm
Memory bus width 128 Bit 128 Bit
Memory clock speed 1050 MHz 4500 MHz
Memory bandwidth 76.8 GB/s
Shared memory -
DirectX DirectX 11.1, Shader 5.1
Shader Model 5.0
OpenGL 4.4
OpenCL 1.2
Bus support PCIe 2.0 x16
HDMI +
Bitcoin / BTC (SHA256) 118 Mh/s 156 Mh/s
Eyefinity + +
Design reference
CrossFire +
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