GeForce GTX 260 216SP 55 nm vs GeForce GTX 275

Intro

Compare those specifications to the GeForce GTX 275, which features core clock speeds of 633 MHz on the GPU, and 1134 MHz on the 896 MB of GDDR3 RAM. It features 240 SPUs as well as 80 Texture Address Units and 28 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 260 216SP 55 nm		171 Watts
GeForce GTX 275		219 Watts
	Difference: 48 Watts (28%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 275 should theoretically be a bit better than the GeForce GTX 260 216SP 55 nm overall. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GTX 260 216SP 55 nm		111888 MB/sec
	Difference: 15120 (14%)

Texel Rate

The GeForce GTX 275 is much (about 22%) better at AF than the GeForce GTX 260 216SP 55 nm. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
	Difference: 9168 (22%)

Pixel Rate

The GeForce GTX 275 should be a little bit (about 10%) better at full screen anti-aliasing than the GeForce GTX 260 216SP 55 nm, and also should be able to handle higher resolutions better. (explain)

GeForce GTX 275		17724 Mpixels/sec
GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
	Difference: 1596 (10%)

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 (in units of megabytes per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total texture units by the core clock 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 in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.