GeForce GTX 580 3GB vs Radeon RX 570

Intro

Compare those specifications to the Radeon RX 570, which features a core clock speed of 1168 MHz and a GDDR5 memory frequency of 1750 MHz. It also uses a 256-bit bus, and uses a 14 nm design. It is made up of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 570		150 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 94 Watts (63%)

Memory Bandwidth

The Radeon RX 570 should in theory be a little bit faster than the GeForce GTX 580 3GB in general. (explain)

Radeon RX 570		229376 MB/sec
GeForce GTX 580 3GB		192384 MB/sec
	Difference: 36992 (19%)

Texel Rate

The Radeon RX 570 is much (more or less 203%) more effective at texture filtering than the GeForce GTX 580 3GB. (explain)

Radeon RX 570		149504 Mtexels/sec
GeForce GTX 580 3GB		49408 Mtexels/sec
	Difference: 100096 (203%)

Pixel Rate

The Radeon RX 570 should be a bit (approximately 1%) better at AA than the GeForce GTX 580 3GB, and also capable of handling higher screen resolutions while still performing well. (explain)

Radeon RX 570		37376 Mpixels/sec
GeForce GTX 580 3GB		37056 Mpixels/sec
	Difference: 320 (1%)

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 largest amount of data (in units of MB per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the 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 number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines 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 also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.