GeForce GTX 465 vs Radeon RX 580

Intro

Compare all that 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 is made up of 2304 Stream Processors, 144 Texture Address Units, and 32 Raster Operation Units.

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 should perform a lot faster than the GeForce GTX 465 in general. (explain)

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

Texel Rate

The Radeon RX 580 should be quite a bit (more or less 578%) faster with regards to texture filtering 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%) faster with regards to AA than the GeForce GTX 465, and also capable of handling higher resolutions without slowing down too much. (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 information (measured in megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the 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 most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.