Radeon 540X vs Radeon HD 4890

Find out if it is worth upgrading your current GPU setup by comparing Radeon 540X and Radeon HD 4890. 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 540X and Radeon HD 4890. 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.

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 4890
Power consumption (TDP) 50 Watt 190 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 S-Video
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  • Radeon HD 4890 has 280% more power consumption, than Radeon 540X.
  • Radeon 540X is connected by PCIe 3.0 x8, and Radeon HD 4890 uses PCIe 2.0 x16 interface.
  • Radeon 540X has 1 GB more memory, than Radeon HD 4890.
  • Radeon 540X is used in Laptops, and Radeon HD 4890 - in Desktops.
  • Radeon 540X is build with GCN 4.0 architecture, and Radeon HD 4890 - with TeraScale.
  • Radeon 540X is manufactured by 14 nm process technology, and Radeon HD 4890 - by 55 nm process technology.
  • Memory clock speed of Radeon 540X is 2100 MHz higher, than Radeon HD 4890.

Game benchmarks

high / 1080p 6−7 7−8
ultra / 1080p 3−4 4−5
QHD / 1440p 0−1 0−1
low / 720p 14−16 16−18
medium / 1080p 7−8 8−9
The average gaming FPS of Radeon HD 4890 in Assassin's Creed Odyssey is 12% more, than Radeon 540X.

Full Specs

  Radeon 540X Radeon HD 4890
Architecture GCN 4.0 TeraScale
Code name Lexa RV790
Type Laptop Desktop
Release date 12 August 2019 2 April 2009
Pipelines 512 800
Core clock speed 850 MHz
Boost Clock 1219 MHz
Transistor count 2,200 million 959 million
Manufacturing process technology 14 nm 55 nm
Texture fill rate 33.47 34.00
Floating-point performance 1,360.0 gflops
Length 241 mm
Memory bus width 64 Bit 256 Bit
Memory clock speed 6000 MHz 3900 MHz
Memory bandwidth 112.0 GB/s 124.8 GB/s
Shared memory -
DirectX 12 (12_0) 10.1 (10_1)
Shader Model 6.4 4.1
OpenGL 4.6 3.3
OpenCL 2.0 1.1
Vulkan 1.2.131 N/A
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