Radeon 550X vs Radeon HD 6790

If you are going to buy a new graphics card and are choosing between Radeon 550X and Radeon HD 6790, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Radeon 550X stacks up against Radeon HD 6790, check out specs charts below.

Main Specs

  Radeon 550X Radeon HD 6790
Power consumption (TDP) 50 Watt 150 Watt
Interface PCIe 3.0 x8 PCIe 2.0 x16
Supplementary power connectors None 2x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 1 GB
Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon HD 6790 has 200% more power consumption, than Radeon 550X.
  • Radeon 550X is connected by PCIe 3.0 x8, and Radeon HD 6790 uses PCIe 2.0 x16 interface.
  • Radeon 550X has 1 GB more memory, than Radeon HD 6790.
  • Both cards are used in Desktops.
  • Radeon 550X is build with GCN 4.0 architecture, and Radeon HD 6790 - with Terascale 2.
  • Core clock speed of Radeon 550X is 242 MHz higher, than Radeon HD 6790.
  • Radeon 550X is manufactured by 14 nm process technology, and Radeon HD 6790 - by 40 nm process technology.
  • Radeon HD 6790 is 53 mm longer, than Radeon 550X.
  • Memory clock speed of Radeon 550X is 5950 MHz higher, than Radeon HD 6790.

Game benchmarks

high / 1080p 7−8 7−8
ultra / 1080p 4−5 4−5
QHD / 1440p 0−1 0−1
low / 720p 16−18 18−20
medium / 1080p 9−10 9−10
The average gaming FPS of Radeon HD 6790 in Assassin's Creed Odyssey is 11% more, than Radeon 550X.

Full Specs

  Radeon 550X Radeon HD 6790
Architecture GCN 4.0 Terascale 2
Code name Lexa Barts
Type Desktop Desktop
Release date 27 March 2019 4 April 2011
Pipelines 512 800
Core clock speed 1082 MHz 840 MHz
Boost Clock 1218 MHz
Transistor count 2,200 million 1,700 million
Manufacturing process technology 14 nm 40 nm
Texture fill rate 38.98 33.60
Floating-point performance 1,344.0 gflops
Length 145 mm 198 mm
Memory bus width 128 Bit 256 Bit
Memory clock speed 7000 MHz 1050 MHz
Memory bandwidth 112.0 GB/s 134.4 GB/s
DirectX 12 (12_0) 11.2 (11_0)
Shader Model 6.4 5.0
OpenGL 4.6 4.4
OpenCL 2.0 1.2
Vulkan 1.2.131 N/A
Bitcoin / BTC (SHA256) 122 Mh/s
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