GeForce GTX 275 vs GeForce GTX 560 Ti 448

Intro

Compare those specifications to the GeForce GTX 560 Ti 448, which features a clock frequency of 732 MHz and a GDDR5 memory speed of 900 MHz. It also makes use of a 320-bit memory bus, and uses a 40 nm design. It is made up of 448 SPUs, 56 Texture Address Units, and 40 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti 448		210 Watts
GeForce GTX 275		219 Watts
	Difference: 9 Watts (4%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 560 Ti 448 will be 13% faster than the GeForce GTX 275 in general, because of its greater data rate. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 16992 (13%)

Texel Rate

The GeForce GTX 275 will be much (approximately 24%) more effective at anisotropic filtering than the GeForce GTX 560 Ti 448. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 9648 (24%)

Pixel Rate

The GeForce GTX 560 Ti 448 should be quite a bit (more or less 65%) more effective at anti-aliasing than the GeForce GTX 275, and also should be able to handle higher resolutions more effectively. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 11556 (65%)

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: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units 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 output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.