Radeon 540X vs Radeon R9 M485X

In this comparison between Radeon 540X and Radeon R9 M485X 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 R9 M485X will be their preference. Study the comparison tables below and make your choice.

Radeon 540X and Radeon R9 M485X are Laptop Graphics Cards

Note: Radeon 540X and Radeon R9 M485X are only used in laptop graphics. They have 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 or Radeon R9 M485X here:

Main Specs

  Radeon 540X Radeon R9 M485X
Power consumption (TDP) 50 Watt 250 Watt
Interface PCIe 3.0 x8 MXM-B (3.0)
Supplementary power connectors None None
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 8 GB MB
Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • Radeon R9 M485X has 400% more power consumption, than Radeon 540X.
  • Radeon 540X is connected by PCIe 3.0 x8, and Radeon R9 M485X uses MXM-B (3.0) interface.
  • Radeon R9 M485X has 6 GB more memory, than Radeon 540X.
  • Both cards are used in Laptops.
  • Radeon 540X is build with GCN 4.0 architecture, and Radeon R9 M485X - with GCN 3.
  • Radeon 540X is manufactured by 14 nm process technology, and Radeon R9 M485X - by 28 nm process technology.
  • Memory clock speed of Radeon 540X is 1000 MHz higher, than Radeon R9 M485X.

Game benchmarks

high / 1080p 6−7 24−27
ultra / 1080p 3−4 14−16
QHD / 1440p 0−1 10−11
4K / 2160p 6−7
low / 720p 14−16 45−50
medium / 1080p 7−8 30−35
The average gaming FPS of Radeon R9 M485X in Assassin's Creed Odyssey is 275% more, than Radeon 540X.

Full Specs

  Radeon 540X Radeon R9 M485X
Architecture GCN 4.0 GCN 3
Code name Lexa Amethyst
Type Laptop Laptop
Release date 12 August 2019 14 May 2016
Pipelines 512 2048
Core clock speed 723 MHz
Boost Clock 1219 MHz
Transistor count 2,200 million 5,000 million
Manufacturing process technology 14 nm 28 nm
Texture fill rate 33.47 92.54
Floating-point performance 2,961 gflops
Memory bus width 64 Bit 256 Bit
Memory clock speed 6000 MHz 5000 MHz
Memory bandwidth 112.0 GB/s 160.0 GB/s
Shared memory - -
DirectX 12 (12_0) 12 (12_0)
Shader Model 6.4 6.3
OpenGL 4.6 4.6
OpenCL 2.0 2.0
Vulkan 1.2.131 1.2.131
Laptop size large
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