Radeon HD 8790M vs Radeon R9 M365X

If you are going to buy a new graphics card and are choosing between Radeon HD 8790M and Radeon R9 M365X, 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 8790M stacks up against Radeon R9 M365X, check out specs charts below.

Radeon HD 8790M and Radeon R9 M365X are Laptop Graphics Cards

Note: Radeon HD 8790M and Radeon R9 M365X 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 M365X here:

Main Specs

  Radeon HD 8790M Radeon R9 M365X
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
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  • Radeon HD 8790M is connected by MXM-A (3.0), and Radeon R9 M365X uses PCIe 3.0 x16 interface.
  • Radeon R9 M365X has 2 GB more memory, than Radeon HD 8790M.
  • Both cards are used in Laptops.
  • Radeon HD 8790M and Radeon R9 M365X are build with GCN architecture.
  • Core clock speed of Radeon R9 M365X is 50 MHz higher, than Radeon HD 8790M.
  • Radeon HD 8790M and Radeon R9 M365X are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 8790M is 3375 MHz higher, than Radeon R9 M365X.

Game benchmarks

high / 1080p 3−4 6−7
ultra / 1080p 1−2 4−5
QHD / 1440p 0−1 0−1
low / 720p 14−16 16−18
medium / 1080p 6−7 8−9
The average gaming FPS of Radeon R9 M365X in Assassin's Creed Odyssey is 50% more, than Radeon HD 8790M.

Full Specs

  Radeon HD 8790M Radeon R9 M365X
Architecture GCN GCN
Code name Mars XTX Tropo
Type Laptop Laptop
Release date 16 November 2012 6 May 2015
Pipelines 384 640
Core clock speed 850 MHz 900 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 1125 MHz
Memory bandwidth 64 GB/s 72 GB/s
Shared memory - -
DirectX 12 (11_1)
Shader Model 5.1 5.1
OpenGL 4.6 4.4
OpenCL 1.2 Not Listed
Vulkan 1.2.131
FreeSync +
Bus support PCIe 3.0
Bitcoin / BTC (SHA256) 80 Mh/s
Laptop size medium sized medium sized
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
Compute units 10
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