GeForce GTX 675MX vs Radeon HD 4890

When choosing between GeForce GTX 675MX and Radeon HD 4890, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GTX 675MX and Radeon HD 4890.

GeForce GTX 675MX is a Laptop Graphics Card

Note: GeForce GTX 675MX 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 GeForce GTX 675MX here:

Main Specs

  GeForce GTX 675MX Radeon HD 4890
Power consumption (TDP) 100 Watt 190 Watt
Interface MXM-B (3.0) PCIe 2.0 x16
Supplementary power connectors None 2x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 1 GB
Display Connectors No outputs 2x DVI, 1x S-Video
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  • Radeon HD 4890 has 90% more power consumption, than GeForce GTX 675MX.
  • GeForce GTX 675MX is connected by MXM-B (3.0), and Radeon HD 4890 uses PCIe 2.0 x16 interface.
  • GeForce GTX 675MX has 1 GB more memory, than Radeon HD 4890.
  • GeForce GTX 675MX is used in Laptops, and Radeon HD 4890 - in Desktops.
  • GeForce GTX 675MX is build with Kepler architecture, and Radeon HD 4890 - with TeraScale.
  • Core clock speed of Radeon HD 4890 is 250 MHz higher, than GeForce GTX 675MX.
  • GeForce GTX 675MX is manufactured by 28 nm process technology, and Radeon HD 4890 - by 55 nm process technology.
  • Memory clock speed of Radeon HD 4890 is 2100 MHz higher, than GeForce GTX 675MX.

Game benchmarks

high / 1080p 9−10 7−8
ultra / 1080p 5−6 4−5
QHD / 1440p 0−1 0−1
low / 720p 21−24 16−18
medium / 1080p 12−14 8−9
The average gaming FPS of GeForce GTX 675MX in Assassin's Creed Odyssey is 33% more, than Radeon HD 4890.

Full Specs

  GeForce GTX 675MX Radeon HD 4890
Architecture Kepler TeraScale
Code name N13E-GSR RV790
Type Laptop Desktop
Release date 1 October 2012 2 April 2009
Pipelines 960 800
Core clock speed 600 MHz 850 MHz
Transistor count 3,540 million 959 million
Manufacturing process technology 28 nm 55 nm
Texture fill rate 48.0 billion/sec 34.00
Floating-point performance 1,256 gflops 1,360.0 gflops
Length 241 mm
Memory bus width 256 Bit 256 Bit
Memory clock speed 1800 MHz 3900 MHz
Memory bandwidth 115.2 GB/s 124.8 GB/s
Shared memory -
DirectX 12 API 10.1 (10_1)
Shader Model 5.1 4.1
OpenGL 4.5 3.3
OpenCL 1.1 1.1
Vulkan 1.1.126 N/A
CUDA +
CUDA cores 960
Bus support PCI Express 2.0
SLI options +
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
Bitcoin / BTC (SHA256) 63 Mh/s
Laptop size large
Optimus +
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