GeForce GTX 780 Ti vs Radeon HD 5970

Intro

Compare those specifications to the Radeon HD 5970, which comes with core speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 1600 SPUs as well as 160 Texture Address Units and 64 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 780 Ti		250 Watts
Radeon HD 5970		294 Watts
	Difference: 44 Watts (18%)

Memory Bandwidth

In theory, the GeForce GTX 780 Ti is 31% quicker than the Radeon HD 5970 in general, because of its greater bandwidth. (explain)

GeForce GTX 780 Ti		336000 MB/sec
Radeon HD 5970		256000 MB/sec
	Difference: 80000 (31%)

Texel Rate

The Radeon HD 5970 will be a little bit (about 10%) faster with regards to anisotropic filtering than the GeForce GTX 780 Ti. (explain)

Radeon HD 5970		232000 Mtexels/sec
GeForce GTX 780 Ti		210000 Mtexels/sec
	Difference: 22000 (10%)

Pixel Rate

The Radeon HD 5970 should be much (approximately 121%) faster with regards to AA than the GeForce GTX 780 Ti, and also will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 5970		92800 Mpixels/sec
GeForce GTX 780 Ti		42000 Mpixels/sec
	Difference: 50800 (121%)

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 information (counted in megabytes per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at 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 could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.