Radeon HD 7990 vs Radeon R7 M365X

In this comparison between Radeon HD 7990 and Radeon R7 M365X 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 7990 will be the best choice, for others Radeon R7 M365X will be their preference. Study the comparison tables below and make your choice.

Main Specs

  Radeon HD 7990 Radeon R7 M365X
Power consumption (TDP) 375 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x8
Supplementary power connectors 2x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 3 GB 4 GB
Display Connectors 1x DVI, 4x mini-DisplayPort No outputs
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  • Radeon HD 7990 is connected by PCIe 3.0 x16, and Radeon R7 M365X uses PCIe 3.0 x8 interface.
  • Radeon R7 M365X has 1 GB more memory, than Radeon HD 7990.
  • Both cards are used in Desktops.
  • Radeon HD 7990 and Radeon R7 M365X are build with GCN 1.0 architecture.
  • Core clock speed of Radeon HD 7990 is 50 MHz higher, than Radeon R7 M365X.
  • Radeon HD 7990 and Radeon R7 M365X are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7990 is 5000 MHz higher, than Radeon R7 M365X.

Game benchmarks

high / 1080p 35−40 0−1
ultra / 1080p 21−24 0−1
QHD / 1440p 16−18 0−1
4K / 2160p 10−11
low / 720p 60−65 10−12
medium / 1080p 40−45 2−3
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 766% more, than Radeon R7 M365X.

Full Specs

  Radeon HD 7990 Radeon R7 M365X
Architecture GCN 1.0 GCN 1.0
Code name Malta Litho
Type Desktop Desktop
Release date 24 April 2013 5 May 2015
Pipelines 2048 384
Core clock speed 950 MHz 900 MHz
Boost Clock 1000 MHz 825 MHz
Transistor count 4,313 million 690 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 128.0 23.04
Floating-point performance 2x 4,096 gflops 737.3 gflops
Length 307 mm
Memory bus width 384 Bit 128 Bit
Memory clock speed 6000 MHz 1000 MHz
Memory bandwidth 288.0 GB/s 64 GB/s
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) 459 Mh/s
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
Ethereum / ETH (DaggerHashimoto) 44 Mh/s
Compute units 6
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