Radeon HD 4890 vs Radeon R8 M445DX

When comparing Radeon HD 4890 and Radeon R8 M445DX, 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 4890 and Radeon R8 M445DX is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Radeon R8 M445DX is a Laptop Graphics Card

Note: Radeon R8 M445DX 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 R8 M445DX here:

Main Specs

  Radeon HD 4890 Radeon R8 M445DX
Power consumption (TDP) 190 Watt
Interface PCIe 2.0 x16 IGP
Supplementary power connectors 2x 6-pin
Memory type GDDR5 DDR4/DDR3
Maximum RAM amount 1 GB
Display Connectors 2x DVI, 1x S-Video No outputs
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  • Radeon HD 4890 is connected by PCIe 2.0 x16, and Radeon R8 M445DX uses IGP interface.
  • Radeon HD 4890 is used in Desktops, and Radeon R8 M445DX - in Laptops.
  • Radeon HD 4890 is build with TeraScale architecture, and Radeon R8 M445DX - with GCN.
  • Core clock speed of Radeon HD 4890 is 130 MHz higher, than Radeon R8 M445DX.
  • Radeon HD 4890 is manufactured by 55 nm process technology, and Radeon R8 M445DX - by 28 nm process technology.
  • Memory clock speed of Radeon HD 4890 is 2967 MHz higher, than Radeon R8 M445DX.

Game benchmarks

high / 1080p 7−8 0−1
ultra / 1080p 4−5
QHD / 1440p 0−1 0−1
low / 720p 16−18 1−2
medium / 1080p 8−9 0−1
The average gaming FPS of Radeon HD 4890 in Assassin's Creed Odyssey is 1600% more, than Radeon R8 M445DX.

Full Specs

  Radeon HD 4890 Radeon R8 M445DX
Architecture TeraScale GCN
Code name RV790 Meso
Type Desktop Laptop
Release date 2 April 2009 1 June 2016
Pipelines 800 704
Core clock speed 850 MHz 720 / 1020 MHz
Boost Clock 1021 MHz
Transistor count 959 million 1,550 million
Manufacturing process technology 55 nm 28 nm
Texture fill rate 34.00 20.42
Floating-point performance 1,360.0 gflops
Length 241 mm
Memory bus width 256 Bit 128 + 64 Bit
Memory clock speed 3900 MHz 933 / 1000 MHz
Memory bandwidth 124.8 GB/s
Shared memory -
DirectX 10.1 (10_1) 12 (12_0)
Shader Model 4.1 6.0
OpenGL 3.3 4.6
OpenCL 1.1 2.0
Vulkan N/A 1.2.131
Laptop size medium sized
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