Radeon HD 6990 vs Radeon R8 M365DX

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 6990 and Radeon R8 M365DX. 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 6990 and Radeon R8 M365DX. 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 R8 M365DX is a Laptop Graphics Card

Note: Radeon R8 M365DX 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 R8 M365DX here:

Main Specs

  Radeon HD 6990 Radeon R8 M365DX
Power consumption (TDP) 375 Watt
Interface PCIe 2.0 x16 IGP
Supplementary power connectors 2x 8-pin
Memory type GDDR5 DDR3
Maximum RAM amount 2 GB
Display Connectors 1x DVI, 4x mini-DisplayPort No outputs
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  • Radeon HD 6990 is connected by PCIe 2.0 x16, and Radeon R8 M365DX uses IGP interface.
  • Radeon HD 6990 is used in Desktops, and Radeon R8 M365DX - in Laptops.
  • Radeon HD 6990 is build with TeraScale 3 architecture, and Radeon R8 M365DX - with GCN.
  • Core clock speed of Radeon HD 6990 is 110 MHz higher, than Radeon R8 M365DX.
  • Radeon HD 6990 is manufactured by 40 nm process technology, and Radeon R8 M365DX - by 28 nm process technology.
  • Memory clock speed of Radeon HD 6990 is 4200 MHz higher, than Radeon R8 M365DX.

Game benchmarks

high / 1080p 14−16 0−1
ultra / 1080p 9−10
QHD / 1440p 3−4 0−1
low / 720p 30−35 1−2
medium / 1080p 18−20 0−1
The average gaming FPS of Radeon HD 6990 in Assassin's Creed Odyssey is 3100% more, than Radeon R8 M365DX.

Full Specs

  Radeon HD 6990 Radeon R8 M365DX
Architecture TeraScale 3 GCN
Code name Antilles Meso
Type Desktop Laptop
Release date 8 March 2011 3 June 2015
Pipelines 1536 768
Core clock speed 830 MHz 720 / 1125 MHz
Boost Clock 1125 MHz
Transistor count 2,640 million 1,550 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 79.68 27.00
Floating-point performance 2x 2,549.8 gflops
Length 295 mm
Memory bus width 256 Bit 128 + 64 Bit
Memory clock speed 5000 MHz 800 / 1000 MHz
Memory bandwidth 160.0 GB/s
Shared memory -
DirectX 11.2 (11_0) 12 (12_0)
Shader Model 5.0 6.0
OpenGL 4.4 4.6
OpenCL 1.2 2.0
Vulkan N/A 1.2.131
Bitcoin / BTC (SHA256) 265 Mh/s
Laptop size medium sized
Ethereum / ETH (DaggerHashimoto) 24 Mh/s
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