GeForce GTX 285 2GB vs Radeon RX 470

Intro

Compare all of that to the Radeon RX 470, which comes with GPU core speed of 926 MHz, and 8192 MB of GDDR5 memory running at 1650 MHz through a 256-bit bus. It also is comprised of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470		120 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 84 Watts (70%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 470 is 33% quicker than the GeForce GTX 285 2GB in general, because of its higher data rate. (explain)

Radeon RX 470		211200 MB/sec
GeForce GTX 285 2GB		158976 MB/sec
	Difference: 52224 (33%)

Texel Rate

The Radeon RX 470 is a lot (more or less 129%) more effective at AF than the GeForce GTX 285 2GB. (explain)

Radeon RX 470		118528 Mtexels/sec
GeForce GTX 285 2GB		51840 Mtexels/sec
	Difference: 66688 (129%)

Pixel Rate

The Radeon RX 470 should be much (about 43%) faster with regards to AA than the GeForce GTX 285 2GB, and will be able to handle higher resolutions while still performing well. (explain)

Radeon RX 470		29632 Mpixels/sec
GeForce GTX 285 2GB		20736 Mpixels/sec
	Difference: 8896 (43%)

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: Bandwidth is the max amount of information (counted in megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core 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 fill 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 get to the maximum fill rate.