Radeon HD 6990 vs Radeon R5 Bristol Ridge

When choosing between Radeon HD 6990 and Radeon R5 Bristol Ridge, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between Radeon HD 6990 and Radeon R5 Bristol Ridge.

Radeon R5 Bristol Ridge is a Laptop Graphics Card

Note: Radeon R5 Bristol Ridge 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 R5 Bristol Ridge here:

Main Specs

  Radeon HD 6990 Radeon R5 Bristol Ridge
Power consumption (TDP) 375 Watt 12-45 Watt
Interface PCIe 2.0 x16
Supplementary power connectors 2x 8-pin
Memory type GDDR5
Maximum RAM amount 2 GB
Display Connectors 1x DVI, 4x mini-DisplayPort
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  • Radeon HD 6990 has 3025% more power consumption, than Radeon R5 Bristol Ridge.
  • Radeon HD 6990 is used in Desktops, and Radeon R5 Bristol Ridge - in Laptops.
  • Radeon HD 6990 is build with TeraScale 3 architecture, and Radeon R5 Bristol Ridge - with GCN 1.2/2.0.
  • Radeon HD 6990 is manufactured by 40 nm process technology, and Radeon R5 Bristol Ridge - by 28 nm process technology.

Game benchmarks

high / 1080p 14−16 3−4
ultra / 1080p 9−10 1−2
QHD / 1440p 3−4 0−1
low / 720p 30−35 14−16
medium / 1080p 18−20 5−6
The average gaming FPS of Radeon HD 6990 in Assassin's Creed Odyssey is 216% more, than Radeon R5 Bristol Ridge.

Full Specs

  Radeon HD 6990 Radeon R5 Bristol Ridge
Architecture TeraScale 3 GCN 1.2/2.0
Code name Antilles Bristol Ridge
Type Desktop Laptop
Release date 8 March 2011 1 June 2016
Pipelines 1536 384
Core clock speed 830 MHz
Boost Clock 800 MHz
Transistor count 2,640 million 3100 Million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 79.68
Floating-point performance 2x 2,549.8 gflops
Length 295 mm
Memory bus width 256 Bit 64/128 Bit
Memory clock speed 5000 MHz
Memory bandwidth 160.0 GB/s
Shared memory +
DirectX 11.2 (11_0) DirectX 12 (FL 12_0)
Shader Model 5.0
OpenGL 4.4
OpenCL 1.2
Vulkan N/A
Bitcoin / BTC (SHA256) 265 Mh/s
Laptop size medium sized
Ethereum / ETH (DaggerHashimoto) 24 Mh/s
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