GeForce GTX 260 216SP 55 nm vs Radeon RX 580

Intro

Compare all of that to the Radeon RX 580, which makes use of a 14 nm design. AMD has clocked the core speed at 1257 MHz. The GDDR5 memory runs at a frequency of 2000 MHz on this particular card. It features 2304 SPUs as well as 144 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 260 216SP 55 nm		171 Watts
Radeon RX 580		185 Watts
	Difference: 14 Watts (8%)

Memory Bandwidth

Performance-wise, the Radeon RX 580 should theoretically be much better than the GeForce GTX 260 216SP 55 nm in general. (explain)

Radeon RX 580		262144 MB/sec
GeForce GTX 260 216SP 55 nm		111888 MB/sec
	Difference: 150256 (134%)

Texel Rate

The Radeon RX 580 will be much (about 336%) faster with regards to texture filtering than the GeForce GTX 260 216SP 55 nm. (explain)

Radeon RX 580		181008 Mtexels/sec
GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
	Difference: 139536 (336%)

Pixel Rate

The Radeon RX 580 is quite a bit (about 149%) faster with regards to FSAA than the GeForce GTX 260 216SP 55 nm, and should be able to handle higher screen resolutions better. (explain)

Radeon RX 580		40224 Mpixels/sec
GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
	Difference: 24096 (149%)

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 (in units of MB per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video 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 chip can possibly write to the 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 speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.