GeForce GTX 275 vs GeForce GTX 560

Intro

Compare those specs to the GeForce GTX 560, which features GPU clock speed of 810 MHz, and 1024 MB of GDDR5 RAM running at 1001 MHz through a 256-bit bus. It also is made up of 336 Stream Processors, 56 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560		150 Watts
GeForce GTX 275		219 Watts
	Difference: 69 Watts (46%)

Memory Bandwidth

Theoretically, the GeForce GTX 560 should be a small bit faster than the GeForce GTX 275 in general. (explain)

GeForce GTX 560		128128 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 1120 (1%)

Texel Rate

The GeForce GTX 275 should be a little bit (about 12%) more effective at anisotropic filtering than the GeForce GTX 560. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 560		45360 Mtexels/sec
	Difference: 5280 (12%)

Pixel Rate

The GeForce GTX 560 should be much (more or less 46%) faster with regards to anti-aliasing than the GeForce GTX 275, and also will be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 560		25920 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 8196 (46%)

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 (in units of megabytes per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, 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 can possibly record to its local memory per 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 - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.