GeForce GTX 275 vs GeForce GTX 570

Intro

Compare all that to the GeForce GTX 570, which makes use of a 40 nm design. nVidia has set the core speed at 732 MHz. The GDDR5 RAM works at a speed of 950 MHz on this particular model. It features 480 SPUs as well as 60 TAUs and 40 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The GeForce GTX 570, in theory, should perform a small bit faster than the GeForce GTX 275 in general. (explain)

GeForce GTX 570		152000 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 24992 (20%)

Texel Rate

The GeForce GTX 275 should be just a bit (more or less 15%) more effective at anisotropic filtering than the GeForce GTX 570. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 570		43920 Mtexels/sec
	Difference: 6720 (15%)

Pixel Rate

The GeForce GTX 570 should be much (about 65%) more effective at anti-aliasing than the GeForce GTX 275, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 570		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: Bandwidth is the max amount of information (counted in MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better 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 are processed in one second. This number is worked out by multiplying the total number of texture units of the card 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 number of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.