GeForce GTX 580 vs Radeon RX 480 4GB

Intro

Compare that to the Radeon RX 480 4GB, which has GPU clock speed of 1120 MHz, and 4096 MB of GDDR5 memory set to run at 1750 MHz through a 256-bit bus. It also is comprised of 2304 Stream Processors, 144 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 480 4GB		150 Watts
GeForce GTX 580		244 Watts
	Difference: 94 Watts (63%)

Memory Bandwidth

In theory, the Radeon RX 480 4GB should perform just a bit faster than the GeForce GTX 580 overall. (explain)

Radeon RX 480 4GB		229376 MB/sec
GeForce GTX 580		192384 MB/sec
	Difference: 36992 (19%)

Texel Rate

The Radeon RX 480 4GB is much (approximately 226%) better at texture filtering than the GeForce GTX 580. (explain)

Radeon RX 480 4GB		161280 Mtexels/sec
GeForce GTX 580		49408 Mtexels/sec
	Difference: 111872 (226%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 580 is superior to the Radeon RX 480 4GB, though not by far. (explain)

GeForce GTX 580		37056 Mpixels/sec
Radeon RX 480 4GB		35840 Mpixels/sec
	Difference: 1216 (3%)

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: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.