GeForce GTX 650 Ti vs Radeon HD 5970

Intro

Compare all that to the Radeon HD 5970, which features GPU clock speed of 725 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 256-bit bus. It also features 1600 Stream Processors, 160 TAUs, and 64 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti		110 Watts
Radeon HD 5970		294 Watts
	Difference: 184 Watts (167%)

Memory Bandwidth

The Radeon HD 5970, in theory, should perform a lot faster than the GeForce GTX 650 Ti overall. (explain)

Radeon HD 5970		256000 MB/sec
GeForce GTX 650 Ti		86400 MB/sec
	Difference: 169600 (196%)

Texel Rate

The Radeon HD 5970 is much (more or less 291%) faster with regards to anisotropic filtering than the GeForce GTX 650 Ti. (explain)

Radeon HD 5970		232000 Mtexels/sec
GeForce GTX 650 Ti		59392 Mtexels/sec
	Difference: 172608 (291%)

Pixel Rate

The Radeon HD 5970 is a lot (about 525%) more effective at anti-aliasing than the GeForce GTX 650 Ti, and will be able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 5970		92800 Mpixels/sec
GeForce GTX 650 Ti		14848 Mpixels/sec
	Difference: 77952 (525%)

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 data (in units of megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 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 amount of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video 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 could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.