Radeon HD 7770 vs Radeon HD 8790M

When comparing Radeon HD 7770 and Radeon HD 8790M, 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 Radeon HD 7770 and Radeon HD 8790M is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Radeon HD 8790M is a Laptop Graphics Card

Note: Radeon HD 8790M 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 HD 8790M here:

Main Specs

  Radeon HD 7770 Radeon HD 8790M
Interface MXM-A (3.0)
Supplementary power connectors None
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs
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  • Radeon HD 7770 and Radeon HD 8790M have maximum RAM of 2 GB.
  • Radeon HD 7770 is used in Desktops, and Radeon HD 8790M - in Laptops.
  • Radeon HD 7770 and Radeon HD 8790M are build with GCN architecture.
  • Core clock speed of Radeon HD 7770 is 150 MHz higher, than Radeon HD 8790M.
  • Radeon HD 7770 and Radeon HD 8790M are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7770 and Radeon HD 8790M is 4500 MHz.

Game benchmarks

high / 1080p 10−11 3−4
ultra / 1080p 6−7 1−2
QHD / 1440p 1−2 0−1
low / 720p 24−27 14−16
medium / 1080p 12−14 6−7
The average gaming FPS of Radeon HD 7770 in Assassin's Creed Odyssey is 116% more, than Radeon HD 8790M.

Full Specs

  Radeon HD 7770 Radeon HD 8790M
Architecture GCN GCN
Code name Cape Verde Mars XTX
Type Desktop Laptop
Release date 15 February 2012 16 November 2012
Pipelines 640 384
Core clock speed 1000 MHz 850 MHz
Boost Clock 900 MHz
Transistor count 950 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 21.60
Floating-point performance 691.2 gflops
Memory bus width 128 Bit 128 Bit
Memory clock speed 4500 MHz 4500 MHz
Memory bandwidth 64 GB/s
Shared memory - -
DirectX DirectX 11.1, Shader 5.1 12 (11_1)
Shader Model 5.1
OpenGL 4.6
OpenCL 1.2
Vulkan 1.2.131
Bitcoin / BTC (SHA256) 156 Mh/s 80 Mh/s
Laptop size medium sized
Eyefinity +
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