GeForce GTX 580 3GB vs Radeon RX 460

Intro

Compare that to the Radeon RX 460, which features GPU core speed of 1090 MHz, and 4096 MB of GDDR5 RAM running at 1750 MHz through a 128-bit bus. It also is made up of 896 SPUs, 56 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460		75 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 169 Watts (225%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 580 3GB should be a lot faster than the Radeon RX 460 in general. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon RX 460		112000 MB/sec
	Difference: 80384 (72%)

Texel Rate

The Radeon RX 460 will be quite a bit (approximately 24%) faster with regards to anisotropic filtering than the GeForce GTX 580 3GB. (explain)

Radeon RX 460		61040 Mtexels/sec
GeForce GTX 580 3GB		49408 Mtexels/sec
	Difference: 11632 (24%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 580 3GB is a better choice, and very much so. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Radeon RX 460		17440 Mpixels/sec
	Difference: 19616 (112%)

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 (measured in megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at handling 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 the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.