GeForce GTX 260 216SP 55 nm vs Geforce GTX 770

Intro

Compare that to the Geforce GTX 770, which comes with a GPU core clock speed of 1046 MHz, and 2048 MB of GDDR5 memory running at 1753 MHz through a 256-bit bus. It also features 1536 Stream Processors, 128 TAUs, and 32 Raster Operation 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 be 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 much (approximately 223%) faster with regards to anisotropic filtering 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 is much (about 108%) faster with regards to full screen anti-aliasing than the GeForce GTX 260 216SP 55 nm, and also should be able to handle 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 information (in units of megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.