Geforce GTX 770 vs Radeon HD 5970

Intro

Compare all that to the Radeon HD 5970, which comes with a core clock speed of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 256-bit bus, and uses a 40 nm design. It is comprised of 1600 SPUs, 160 TAUs, and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 770		230 Watts
Radeon HD 5970		294 Watts
	Difference: 64 Watts (28%)

Memory Bandwidth

The Radeon HD 5970, in theory, should perform a small bit faster than the Geforce GTX 770 in general. (explain)

Radeon HD 5970		256000 MB/sec
Geforce GTX 770		224384 MB/sec
	Difference: 31616 (14%)

Texel Rate

The Radeon HD 5970 should be quite a bit (more or less 73%) faster with regards to AF than the Geforce GTX 770. (explain)

Radeon HD 5970		232000 Mtexels/sec
Geforce GTX 770		133888 Mtexels/sec
	Difference: 98112 (73%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 5970 is superior to the Geforce GTX 770, by a large margin. (explain)

Radeon HD 5970		92800 Mpixels/sec
Geforce GTX 770		33472 Mpixels/sec
	Difference: 59328 (177%)

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 data (counted in MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This 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 graphics 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 most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.