GeForce GTX 580 vs Radeon R9 270

Intro

Compare those specifications to the Radeon R9 270, which has core speeds of 900 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 RAM. It features 1280 SPUs along with 80 TAUs and 32 ROPs.

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 270		5943 points
GeForce GTX 580		4956 points
	Difference: 987 (20%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270		150 Watts
GeForce GTX 580		244 Watts
	Difference: 94 Watts (63%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 580 should theoretically be just a bit better than the Radeon R9 270 in general. (explain)

GeForce GTX 580		192384 MB/sec
Radeon R9 270		179200 MB/sec
	Difference: 13184 (7%)

Texel Rate

The Radeon R9 270 is much (approximately 46%) more effective at AF than the GeForce GTX 580. (explain)

Radeon R9 270		72000 Mtexels/sec
GeForce GTX 580		49408 Mtexels/sec
	Difference: 22592 (46%)

Pixel Rate

The GeForce GTX 580 is a lot (approximately 29%) faster with regards to anti-aliasing than the Radeon R9 270, and should be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 580		37056 Mpixels/sec
Radeon R9 270		28800 Mpixels/sec
	Difference: 8256 (29%)

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 largest amount of data (counted in MB per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 amount of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.