GeForce GTX 460 SE vs GeForce GTX 660 Ti

Intro

Compare those specs to the GeForce GTX 660 Ti, which comes with clock speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 RAM. It features 1344 SPUs as well as 112 Texture Address Units and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

In theory, the GeForce GTX 660 Ti is 32% quicker than the GeForce GTX 460 SE in general, due to its greater bandwidth. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GTX 460 SE		108800 MB/sec
	Difference: 35200 (32%)

Texel Rate

The GeForce GTX 660 Ti is a lot (approximately 228%) better at anisotropic filtering than the GeForce GTX 460 SE. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GTX 460 SE		31200 Mtexels/sec
	Difference: 71280 (228%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 660 Ti is a better choice, but only just. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce GTX 460 SE		20800 Mpixels/sec
	Difference: 1160 (6%)

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 (measured in MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 amount of pixels that the graphics card could possibly record to the local memory in a 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 drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.