GeForce GTX 580 vs Radeon R9 285

Intro

Compare all of that to the Radeon R9 285, which comes with core clock speeds of 918 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 RAM. It features 1792 SPUs as well as 112 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 285		8500 points
GeForce GTX 580		4956 points
	Difference: 3544 (72%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 285		190 Watts
GeForce GTX 580		244 Watts
	Difference: 54 Watts (28%)

Memory Bandwidth

The GeForce GTX 580, in theory, should be a bit faster than the Radeon R9 285 in general. (explain)

GeForce GTX 580		192384 MB/sec
Radeon R9 285		176000 MB/sec
	Difference: 16384 (9%)

Texel Rate

The Radeon R9 285 is quite a bit (about 108%) better at anisotropic filtering than the GeForce GTX 580. (explain)

Radeon R9 285		102816 Mtexels/sec
GeForce GTX 580		49408 Mtexels/sec
	Difference: 53408 (108%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 580 is superior to the Radeon R9 285, and very much so. (explain)

GeForce GTX 580		37056 Mpixels/sec
Radeon R9 285		29376 Mpixels/sec
	Difference: 7680 (26%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.