GeForce GTX 295 vs Radeon RX 580

Intro

Compare all of that to the Radeon RX 580, which has core speeds of 1257 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR5 RAM. 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)

Radeon RX 580		185 Watts
GeForce GTX 295		289 Watts
	Difference: 104 Watts (56%)

Memory Bandwidth

Theoretically, the Radeon RX 580 should perform a bit faster than the GeForce GTX 295 in general. (explain)

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

Texel Rate

The Radeon RX 580 will be much (approximately 96%) more effective at AF than the GeForce GTX 295. (explain)

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

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 580 is a better choice, and very much so. (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: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. 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 fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.