GeForce 8800 GTS (G92) vs GeForce GTX 660

Intro

Compare those specs to the GeForce GTX 660, which comes with a clock speed of 980 MHz and a GDDR5 memory speed of 1502 MHz. It also makes use of a 192-bit bus, and uses a 28 nm design. It is comprised of 960 SPUs, 80 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTS (G92)		135 Watts
GeForce GTX 660		140 Watts
	Difference: 5 Watts (4%)

Memory Bandwidth

The GeForce GTX 660 should theoretically perform quite a bit faster than the GeForce 8800 GTS (G92) overall. (explain)

GeForce GTX 660		144192 MB/sec
GeForce 8800 GTS (G92)		62080 MB/sec
	Difference: 82112 (132%)

Texel Rate

The GeForce GTX 660 is a lot (about 88%) better at AF than the GeForce 8800 GTS (G92). (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce 8800 GTS (G92)		41600 Mtexels/sec
	Difference: 36800 (88%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 660 is superior to the GeForce 8800 GTS (G92), by far. (explain)

GeForce GTX 660		23520 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 13120 (126%)

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 data (counted in megabytes per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 are processed per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, 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 most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends 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.