Radeon 540X vs Radeon HD 6790

In this comparison between Radeon 540X and Radeon HD 6790 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Radeon 540X will be the best choice, for others Radeon HD 6790 will be their preference. Study the comparison tables below and make your choice.

Radeon 540X is a Laptop Graphics Card

Note: Radeon 540X 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 540X here:

Main Specs

  Radeon 540X 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 540X.
  • Radeon 540X is connected by PCIe 3.0 x8, and Radeon HD 6790 uses PCIe 2.0 x16 interface.
  • Radeon 540X has 1 GB more memory, than Radeon HD 6790.
  • Radeon 540X is used in Laptops, and Radeon HD 6790 - in Desktops.
  • Radeon 540X is build with GCN 4.0 architecture, and Radeon HD 6790 - with Terascale 2.
  • Radeon 540X is manufactured by 14 nm process technology, and Radeon HD 6790 - by 40 nm process technology.
  • Memory clock speed of Radeon 540X is 4950 MHz higher, than Radeon HD 6790.

Game benchmarks

high / 1080p 6−7 7−8
ultra / 1080p 3−4 4−5
QHD / 1440p 0−1 0−1
low / 720p 14−16 18−20
medium / 1080p 7−8 9−10
The average gaming FPS of Radeon HD 6790 in Assassin's Creed Odyssey is 25% more, than Radeon 540X.

Full Specs

  Radeon 540X Radeon HD 6790
Architecture GCN 4.0 Terascale 2
Code name Lexa Barts
Type Laptop Desktop
Release date 12 August 2019 4 April 2011
Pipelines 512 800
Core clock speed 840 MHz
Boost Clock 1219 MHz
Transistor count 2,200 million 1,700 million
Manufacturing process technology 14 nm 40 nm
Texture fill rate 33.47 33.60
Floating-point performance 1,344.0 gflops
Length 198 mm
Memory bus width 64 Bit 256 Bit
Memory clock speed 6000 MHz 1050 MHz
Memory bandwidth 112.0 GB/s 134.4 GB/s
Shared memory -
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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