Geforce GTX 770 vs Radeon HD 5970

Intro

Compare all that to the Radeon HD 5970, which uses a 40 nm design. AMD has set the core frequency at 725 MHz. The GDDR5 memory runs at a speed of 1000 MHz on this particular model. It features 1600 SPUs as well as 160 Texture Address Units and 64 Rasterization Operator Units.

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

As far as performance goes, the Radeon HD 5970 should theoretically be a small bit superior to 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 is quite a bit (more or less 73%) more effective at texture filtering than the Geforce GTX 770. (explain)

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

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 5970 is a better choice, and very much so. (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: Bandwidth is the maximum amount of information (measured in MB per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, 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 faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher 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 a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can 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 Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.