Radeon HD 6790 vs Radeon R7 250X

When comparing Radeon HD 6790 and Radeon R7 250X, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between Radeon HD 6790 and Radeon R7 250X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Main Specs

  Radeon HD 6790 Radeon R7 250X
Power consumption (TDP) 150 Watt 80 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x16
Supplementary power connectors 2x 6-pin 1 x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 1 GB 2 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort 1x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon HD 6790 has 87% more power consumption, than Radeon R7 250X.
  • Radeon HD 6790 is connected by PCIe 2.0 x16, and Radeon R7 250X uses PCIe 3.0 x16 interface.
  • Radeon R7 250X has 1 GB more memory, than Radeon HD 6790.
  • Both cards are used in Desktops.
  • Radeon HD 6790 is build with Terascale 2 architecture, and Radeon R7 250X - with GCN 1.0.
  • Radeon HD 6790 is manufactured by 40 nm process technology, and Radeon R7 250X - by 28 nm process technology.
  • Radeon R7 250X is 12 mm longer, than Radeon HD 6790.
  • Memory clock speed of Radeon R7 250X is 575 MHz higher, than Radeon HD 6790.

Game benchmarks

high / 1080p 7−8 10−12
ultra / 1080p 4−5 6−7
QHD / 1440p 0−1 1−2
low / 720p 18−20 24−27
medium / 1080p 9−10 14−16
The average gaming FPS of Radeon R7 250X in Assassin's Creed Odyssey is 40% more, than Radeon HD 6790.

Full Specs

  Radeon HD 6790 Radeon R7 250X
Architecture Terascale 2 GCN 1.0
Code name Barts Cape Verde
Type Desktop Desktop
Release date 4 April 2011 13 February 2014
Pipelines 800 640
Core clock speed 840 MHz
Boost Clock 1000 MHz
Transistor count 1,700 million 1,500 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 33.60 38.00
Floating-point performance 1,344.0 gflops 1,216 gflops
Length 198 mm 210 mm
Memory bus width 256 Bit 128 Bit
Memory clock speed 1050 MHz 1625 MHz
Memory bandwidth 134.4 GB/s 96 GB/s
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) 122 Mh/s 152 Mh/s
Eyefinity +
Design reference
CrossFire +
DDMA audio +
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