GeForce GTX 275 vs GeForce GTX 660 Ti

Intro

Compare all of that to the GeForce GTX 660 Ti, which uses a 28 nm design. nVidia has set the core speed at 915 MHz. The GDDR5 RAM works at a frequency of 1500 MHz on this specific card. It features 1344 SPUs along with 112 TAUs and 24 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
GeForce GTX 275		219 Watts
	Difference: 69 Watts (46%)

Memory Bandwidth

In theory, the GeForce GTX 660 Ti should perform just a bit faster than the GeForce GTX 275 in general. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 16992 (13%)

Texel Rate

The GeForce GTX 660 Ti will be a lot (approximately 102%) faster with regards to anisotropic filtering than the GeForce GTX 275. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 51840 (102%)

Pixel Rate

The GeForce GTX 660 Ti is quite a bit (more or less 24%) faster with regards to FSAA than the GeForce GTX 275, and able to handle higher resolutions more effectively. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 4236 (24%)

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 maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's bus 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 better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units 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 rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.