GeForce GTX 560 Ti 448 vs Radeon HD 7950 3GB

Intro

Compare that to the Radeon HD 7950 3GB, which comes with GPU core speed of 800 MHz, and 3072 MB of GDDR5 memory running at 1250 MHz through a 384-bit bus. It also is made up of 1792 Stream Processors, 112 Texture Address Units, 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

Theoretically, the Radeon HD 7950 3GB should perform quite a bit faster than the GeForce GTX 560 Ti 448 in general. (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 should be a lot (approximately 119%) better at AF 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

If running with lots of anti-aliasing is important to you, then the GeForce GTX 560 Ti 448 is superior to the Radeon HD 7950 3GB, though not by far. (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 maximum amount of information (measured in MB per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is worked out 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 video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.