Sapphire Radeon HD 4890 

Released May, 2009
  • 870 MHz
  • 1 GB GDDR5

To find the maximum overclock of our card we used a combination of ATITool's successor and our benchmarking suite.
by techPowerUp! (Apr, 2009)
Many partners will be offering overclocked boards as well ranging up to 1000 MHz core speed.
by techPowerUp! (Apr, 2009)

Benchmarks Real world tests of the Radeon HD 4890

PassMark Industry standard benchmark for overall graphics card performanceData courtesy Passmark

Radeon HD 4890

T-Rex (GFXBench 3.0) Data courtesy CompuBench

Radeon HD 4890
Radeon HD 5770

Sky Diver Factor Data courtesy FutureMark

Radeon HD 4890

Cloud Gate Factor Data courtesy FutureMark

Radeon HD 4890

Reviews Word on the street for the Radeon HD 4890

You may combine up to four HD 4890 cards in CrossFireX for better performance and image quality.

Specifications Full list of technical specs


GPU brand ATI
GPU name RV790
Market Desktop
Clock speed 870 MHz
Is dual GPU No
Reference card ATi Radeon HD 4890 850 MHz 1 GB

raw performance

Shading units 800
Texture mapping units 40
Render output processors 16
Compute units 10
Pixel rate 13.92 GPixel/s
Texture rate 34.8 GTexel/s
Floating-point performance 1,392 GFLOPS


Memory clock speed 1,050 MHz
Effective memory clock speed 4,200 MHz
Memory bus 256 bit
Memory 1,024 MB
Memory type GDDR5
Memory bandwidth 134.4 GB/s

noise and power

TDP 190W
Report a correction


comments powered by Disqus