GeForce GTX 560 Ti 448 vs Radeon HD 7950 3GB

Intro

Compare all that to the Radeon HD 7950 3GB, which has GPU core speed of 800 MHz, and 3072 MB of GDDR5 memory set to run at 1250 MHz through a 384-bit bus. It also is made up of 1792 Stream Processors, 112 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950 3GB		200 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 10 Watts (5%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7950 3GB should in theory be much better than the GeForce GTX 560 Ti 448 overall. (explain)

Radeon HD 7950 3GB		240000 MB/sec
GeForce GTX 560 Ti 448		144000 MB/sec
	Difference: 96000 (67%)

Texel Rate

The Radeon HD 7950 3GB will be much (about 119%) faster with regards to texture filtering than the GeForce GTX 560 Ti 448. (explain)

Radeon HD 7950 3GB		89600 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 48608 (119%)

Pixel Rate

The GeForce GTX 560 Ti 448 will be a little bit (about 14%) faster with regards to full screen anti-aliasing than the Radeon HD 7950 3GB, and also should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
Radeon HD 7950 3GB		25600 Mpixels/sec
	Difference: 3680 (14%)

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 largest amount of data (in units of MB per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, 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 most pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.