Radeon HD 8790M vs Radeon R9 M275

In this comparison between Radeon HD 8790M and Radeon R9 M275 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Radeon HD 8790M will be the best choice, for others Radeon R9 M275 will be their preference. Study the comparison tables below and make your choice.

Radeon HD 8790M and Radeon R9 M275 are Laptop Graphics Cards

Note: Radeon HD 8790M and Radeon R9 M275 are only used in laptop graphics. They have 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 or Radeon R9 M275 here:

Main Specs

  Radeon HD 8790M Radeon R9 M275
Interface MXM-A (3.0) PCIe 3.0 x16
Supplementary power connectors None
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs No outputs
  Check Price Check Price
  • Radeon HD 8790M is connected by MXM-A (3.0), and Radeon R9 M275 uses PCIe 3.0 x16 interface.
  • Radeon R9 M275 has 2 GB more memory, than Radeon HD 8790M.
  • Both cards are used in Laptops.
  • Radeon HD 8790M and Radeon R9 M275 are build with GCN architecture.
  • Core clock speed of Radeon R9 M275 is 75 MHz higher, than Radeon HD 8790M.
  • Radeon HD 8790M and Radeon R9 M275 are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 8790M and Radeon R9 M275 is 4500 MHz.

Game benchmarks

high / 1080p 3−4 0−1
ultra / 1080p 1−2
QHD / 1440p 0−1 0−1
low / 720p 14−16 12−14
medium / 1080p 6−7 3−4
The average gaming FPS of Radeon HD 8790M in Assassin's Creed Odyssey is 25% more, than Radeon R9 M275.

Full Specs

  Radeon HD 8790M Radeon R9 M275
Architecture GCN GCN
Code name Mars XTX Venus
Type Laptop Laptop
Release date 16 November 2012 1 August 2014
Pipelines 384 640
Core clock speed 850 MHz 925 MHz
Boost Clock 900 MHz 925 MHz
Transistor count 950 million 1,500 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 21.60 37.00
Floating-point performance 691.2 gflops 1,184 gflops
Memory bus width 128 Bit 128 Bit
Memory clock speed 4500 MHz 4500 MHz
Memory bandwidth 64 GB/s 64 GB/s
Shared memory - -
DirectX 12 (11_1) 12 (11_1)
Shader Model 5.1 5.1
OpenGL 4.6 4.6
OpenCL 1.2 1.2
Vulkan 1.2.131 1.2.131
Bitcoin / BTC (SHA256) 80 Mh/s 122 Mh/s
Laptop size medium sized large
  Check Price Check Price