GeForce GTX 275 vs GeForce GTX 560 Ti

Intro

Compare those specifications to the GeForce GTX 560 Ti, which has a GPU core clock speed of 822 MHz, and 1024 MB of GDDR5 memory running at 1002 MHz through a 256-bit bus. It also is made up of 384 SPUs, 64 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti		170 Watts
GeForce GTX 275		219 Watts
	Difference: 49 Watts (29%)

Memory Bandwidth

In theory, the GeForce GTX 560 Ti will be 1% faster than the GeForce GTX 275 overall, due to its higher data rate. (explain)

GeForce GTX 560 Ti		128256 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 1248 (1%)

Texel Rate

The GeForce GTX 560 Ti should be a bit (approximately 4%) better at texture filtering than the GeForce GTX 275. (explain)

GeForce GTX 560 Ti		52608 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 1968 (4%)

Pixel Rate

The GeForce GTX 560 Ti should be quite a bit (more or less 48%) better at anti-aliasing than the GeForce GTX 275, and should be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 8580 (48%)

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 (counted in megabytes per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the 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 maximum amount of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units 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 output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.