GeForce GTX 260 vs GeForce GTX 660 Ti

Intro

Compare those specifications to the GeForce GTX 660 Ti, which comes with a GPU core clock speed of 915 MHz, and 2048 MB of GDDR5 memory running at 1500 MHz through a 192-bit bus. It also is made up of 1344 SPUs, 112 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
GeForce GTX 260		182 Watts
	Difference: 32 Watts (21%)

Memory Bandwidth

The GeForce GTX 660 Ti should theoretically be a lot faster than the GeForce GTX 260 overall. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GTX 260		111888 MB/sec
	Difference: 32112 (29%)

Texel Rate

The GeForce GTX 660 Ti should be much (more or less 178%) faster with regards to AF than the GeForce GTX 260. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GTX 260		36864 Mtexels/sec
	Difference: 65616 (178%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 660 Ti is superior to the GeForce GTX 260, and very much so. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce GTX 260		16128 Mpixels/sec
	Difference: 5832 (36%)

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 (counted in MB per second) that can be transported across the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the 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 card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.