GeForce GTX 560 Ti 448 vs GeForce GTX 660

Intro

Compare those specifications to the GeForce GTX 660, which has GPU clock speed of 980 MHz, and 2048 MB of GDDR5 memory running at 1502 MHz through a 192-bit bus. It also features 960 SPUs, 80 TAUs, and 24 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 660		5063 points
GeForce GTX 560 Ti 448		4200 points
	Difference: 863 (21%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660		140 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 70 Watts (50%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 660 should in theory be a little bit superior to the GeForce GTX 560 Ti 448 overall. (explain)

GeForce GTX 660		144192 MB/sec
GeForce GTX 560 Ti 448		144000 MB/sec
	Difference: 192 (0%)

Texel Rate

The GeForce GTX 660 will be quite a bit (about 91%) better at anisotropic filtering than the GeForce GTX 560 Ti 448. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 37408 (91%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 560 Ti 448 is superior to the GeForce GTX 660, by a large margin. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 5760 (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: Bandwidth is the max amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better 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 can be applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of 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.