GeForce GTS 150 vs GeForce GTX 660 Ti

Intro

Compare those specs to the GeForce GTX 660 Ti, which comes with a clock speed of 915 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 192-bit bus, and makes use of a 28 nm design. It is comprised of 1344 SPUs, 112 TAUs, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 150		141 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 9 Watts (6%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 660 Ti should be 350% faster than the GeForce GTS 150 overall, due to its higher data rate. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 112000 (350%)

Texel Rate

The GeForce GTX 660 Ti will be a lot (more or less 116%) faster with regards to texture filtering than the GeForce GTS 150. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GTS 150		47360 Mtexels/sec
	Difference: 55120 (116%)

Pixel Rate

If using a high 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 GTS 150		11840 Mpixels/sec
	Difference: 10120 (85%)

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: Bandwidth is the max amount of information (counted in megabytes per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its 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 - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.