GeForce GTX 260 Core 216 vs Radeon RX 580

Intro

Compare those specifications to the Radeon RX 580, which has a clock speed of 1257 MHz and a GDDR5 memory frequency of 2000 MHz. It also features a 256-bit memory bus, and makes use of a 14 nm design. It is made up of 2304 SPUs, 144 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 580		185 Watts
GeForce GTX 260 Core 216		202 Watts
	Difference: 17 Watts (9%)

Memory Bandwidth

As far as performance goes, the Radeon RX 580 should in theory be a lot superior to the GeForce GTX 260 Core 216 in general. (explain)

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

Texel Rate

The Radeon RX 580 will be much (more or less 336%) faster with regards to texture filtering than the GeForce GTX 260 Core 216. (explain)

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

Pixel Rate

The Radeon RX 580 will be much (about 149%) faster with regards to FSAA than the GeForce GTX 260 Core 216, and also should be capable of handling higher resolutions better. (explain)

Radeon RX 580		40224 Mpixels/sec
GeForce GTX 260 Core 216		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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 are applied in one 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 graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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 ability to reach the max fill rate.