GeForce GTX 650 Ti 2GB vs GeForce GTX 660 Ti

Intro

Compare those specs to the GeForce GTX 660 Ti, which has 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 TAUs and 24 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 40 Watts (36%)

Memory Bandwidth

The GeForce GTX 660 Ti should in theory be much faster than the GeForce GTX 650 Ti 2GB in general. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 57600 (67%)

Texel Rate

The GeForce GTX 660 Ti will be much (more or less 73%) better at AF than the GeForce GTX 650 Ti 2GB. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
	Difference: 43088 (73%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 660 Ti is a better choice, by a large margin. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 7112 (48%)

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 megabytes per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.