Radeon HD 6990 vs Radeon R7 250

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 6990 and Radeon R7 250. 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 R7 250. 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.

Main Specs

  Radeon HD 6990 Radeon R7 250
Power consumption (TDP) 375 Watt 75 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x8
Supplementary power connectors 2x 8-pin N/A
Memory type GDDR5 DDR3, GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors 1x DVI, 4x mini-DisplayPort 1x DVI, 1x HDMI, 1x VGA
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  • Radeon HD 6990 has 400% more power consumption, than Radeon R7 250.
  • Radeon HD 6990 is connected by PCIe 2.0 x16, and Radeon R7 250 uses PCIe 3.0 x8 interface.
  • Radeon HD 6990 and Radeon R7 250 have maximum RAM of 2 GB.
  • Both cards are used in Desktops.
  • Radeon HD 6990 is build with TeraScale 3 architecture, and Radeon R7 250 - with GCN.
  • Radeon HD 6990 is manufactured by 40 nm process technology, and Radeon R7 250 - by 28 nm process technology.
  • Radeon HD 6990 is 127 mm longer, than Radeon R7 250.
  • Memory clock speed of Radeon HD 6990 is 3850 MHz higher, than Radeon R7 250.

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 R7 250.

Full Specs

  Radeon HD 6990 Radeon R7 250
Architecture TeraScale 3 GCN
Code name Antilles Oland XT
Type Desktop Desktop
Release date 8 March 2011 1 October 2013
Pipelines 1536 384
Core clock speed 830 MHz
Boost Clock 1050 MHz
Transistor count 2,640 million 950 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 79.68 25.20
Floating-point performance 2x 2,549.8 gflops 716.8 gflops
Length 295 mm 168 mm
Memory bus width 256 Bit 128 Bit
Memory clock speed 5000 MHz 1150 MHz
Memory bandwidth 160.0 GB/s 72 GB/s
Shared memory -
DirectX 11.2 (11_0)
Shader Model 5.0 5.1
OpenGL 4.4 4.6
OpenCL 1.2 1.2
Vulkan N/A
FreeSync +
Bus support PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 265 Mh/s 117 Mh/s
Design reference
CrossFire +
DDMA audio +
Ethereum / ETH (DaggerHashimoto) 24 Mh/s 3 Mh/s
AppAcceleration +
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