GeForce GTX 570 vs GeForce GTX 660

Intro

Compare those specifications to the GeForce GTX 660, which has clock speeds of 980 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 RAM. It features 960 SPUs as well as 80 TAUs and 24 ROPs.

Display Graphs

Hide Graphs

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 570		4387 points
	Difference: 676 (15%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660		140 Watts
GeForce GTX 570		219 Watts
	Difference: 79 Watts (56%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 570 should in theory be a bit better than the GeForce GTX 660 in general. (explain)

GeForce GTX 570		152000 MB/sec
GeForce GTX 660		144192 MB/sec
	Difference: 7808 (5%)

Texel Rate

The GeForce GTX 660 will be quite a bit (more or less 79%) better at anisotropic filtering than the GeForce GTX 570. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce GTX 570		43920 Mtexels/sec
	Difference: 34480 (79%)

Pixel Rate

The GeForce GTX 570 will be quite a bit (approximately 24%) better at anti-aliasing than the GeForce GTX 660, and able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 570		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: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, the result should 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 anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.