GeForce GTX 260 216SP 55 nm vs Geforce GTX 770

Intro

Compare those specs to the Geforce GTX 770, which comes with core clock speeds of 1046 MHz on the GPU, and 1753 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 128 TAUs and 32 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 770		230 Watts
	Difference: 59 Watts (35%)

Memory Bandwidth

The Geforce GTX 770, in theory, should perform a lot faster than the GeForce GTX 260 216SP 55 nm in general. (explain)

Geforce GTX 770		224384 MB/sec
GeForce GTX 260 216SP 55 nm		111888 MB/sec
	Difference: 112496 (101%)

Texel Rate

The Geforce GTX 770 is a lot (more or less 223%) better at AF than the GeForce GTX 260 216SP 55 nm. (explain)

Geforce GTX 770		133888 Mtexels/sec
GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
	Difference: 92416 (223%)

Pixel Rate

The Geforce GTX 770 will be a lot (approximately 108%) better at anti-aliasing than the GeForce GTX 260 216SP 55 nm, and also capable of handling higher screen resolutions without losing too much performance. (explain)

Geforce GTX 770		33472 Mpixels/sec
GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
	Difference: 17344 (108%)

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 max amount of data (in units of MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, 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 high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines 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 is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.