GeForce GTX 465 vs Radeon RX 580

Intro

Compare those specs to the Radeon RX 580, which has clock 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 465		200 Watts
	Difference: 15 Watts (8%)

Memory Bandwidth

In theory, the Radeon RX 580 will be 156% faster than the GeForce GTX 465 in general, due to its higher bandwidth. (explain)

Radeon RX 580		262144 MB/sec
GeForce GTX 465		102592 MB/sec
	Difference: 159552 (156%)

Texel Rate

The Radeon RX 580 should be a lot (approximately 578%) more effective at AF than the GeForce GTX 465. (explain)

Radeon RX 580		181008 Mtexels/sec
GeForce GTX 465		26708 Mtexels/sec
	Difference: 154300 (578%)

Pixel Rate

The Radeon RX 580 is much (more or less 107%) better at anti-aliasing than the GeForce GTX 465, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon RX 580		40224 Mpixels/sec
GeForce GTX 465		19424 Mpixels/sec
	Difference: 20800 (107%)

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 largest amount of data (measured in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's 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 can be applied per second. This figure is calculated by multiplying the total number of texture units by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the clock speed of the card. 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 also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.