GeForce GTX 275 vs GeForce GTX 560 Ti

Intro

Compare that to the GeForce GTX 560 Ti, which comes with a GPU core clock speed of 822 MHz, and 1024 MB of GDDR5 RAM set to run at 1002 MHz through a 256-bit bus. It also is made up of 384 SPUs, 64 Texture Address Units, 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

Theoretically speaking, the GeForce GTX 560 Ti will be 1% faster than the GeForce GTX 275 in general, 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 is a little bit (more or less 4%) more effective at AF than the GeForce GTX 275. (explain)

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

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 560 Ti is superior to the GeForce GTX 275, by a large margin. (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 max amount of data (in units of MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.