GeForce GTX 295 vs Radeon RX 580

Intro

Compare those specifications to the Radeon RX 580, which has GPU clock speed of 1257 MHz, and 8192 MB of GDDR5 RAM running at 2000 MHz through a 256-bit bus. It also features 2304 SPUs, 144 TAUs, 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 295		289 Watts
	Difference: 104 Watts (56%)

Memory Bandwidth

Performance-wise, the Radeon RX 580 should theoretically be a little bit better than the GeForce GTX 295 overall. (explain)

Radeon RX 580		262144 MB/sec
GeForce GTX 295		223776 MB/sec
	Difference: 38368 (17%)

Texel Rate

The Radeon RX 580 will be quite a bit (approximately 96%) faster with regards to AF than the GeForce GTX 295. (explain)

Radeon RX 580		181008 Mtexels/sec
GeForce GTX 295		92160 Mtexels/sec
	Difference: 88848 (96%)

Pixel Rate

The Radeon RX 580 is a lot (about 25%) better at FSAA than the GeForce GTX 295, and also should be capable of handling higher resolutions while still performing well. (explain)

Radeon RX 580		40224 Mpixels/sec
GeForce GTX 295		32256 Mpixels/sec
	Difference: 7968 (25%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. 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 amount of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.