Radeon HD 6990M vs Radeon R9 M365X

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 6990M and Radeon R9 M365X. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Radeon HD 6990M and Radeon R9 M365X. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Radeon HD 6990M and Radeon R9 M365X are Laptop Graphics Cards

Note: Radeon HD 6990M 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 6990M or Radeon R9 M365X here:

Main Specs

  Radeon HD 6990M Radeon R9 M365X
Power consumption (TDP) 100 Watt
Interface MXM-B (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 6990M is connected by MXM-B (3.0), and Radeon R9 M365X uses PCIe 3.0 x16 interface.
  • Radeon R9 M365X has 2 GB more memory, than Radeon HD 6990M.
  • Both cards are used in Laptops.
  • Radeon HD 6990M is build with Terascale 2 architecture, and Radeon R9 M365X - with GCN.
  • Core clock speed of Radeon R9 M365X is 185 MHz higher, than Radeon HD 6990M.
  • Radeon HD 6990M is manufactured by 40 nm process technology, and Radeon R9 M365X - by 28 nm process technology.
  • Memory clock speed of Radeon R9 M365X is 225 MHz higher, than Radeon HD 6990M.

Game benchmarks

high / 1080p 14−16 6−7
ultra / 1080p 8−9 4−5
QHD / 1440p 3−4 0−1
low / 720p 30−33 16−18
medium / 1080p 16−18 8−9
The average gaming FPS of Radeon HD 6990M in Assassin's Creed Odyssey is 100% more, than Radeon R9 M365X.

Full Specs

  Radeon HD 6990M Radeon R9 M365X
Architecture Terascale 2 GCN
Code name Blackcomb XTX Tropo
Type Laptop Laptop
Release date 12 July 2011 6 May 2015
Pipelines 1120 640
Core clock speed 715 MHz 900 MHz
Boost Clock 925 MHz
Transistor count 1,700 million 1,500 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 40.04 37.00
Floating-point performance 1,601.6 gflops 1,184 gflops
Memory bus width 256 Bit 128 Bit
Memory clock speed 900 MHz 1125 MHz
Memory bandwidth 115.2 GB/s 72 GB/s
Shared memory - -
DirectX 11.2 (11_0)
Shader Model 5.0 5.1
OpenGL 4.4 4.4
OpenCL 1.2 Not Listed
Vulkan N/A
FreeSync +
Bus support PCIe 3.0
Laptop size large medium sized
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
Compute units 10
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