GeForce GTX 560 vs GeForce GTX 660

Intro

Compare that to the GeForce GTX 660, which features GPU clock speed of 980 MHz, and 2048 MB of GDDR5 memory set to run at 1502 MHz through a 192-bit bus. It also features 960 SPUs, 80 TAUs, and 24 Raster Operation Units.

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 560		3030 points
	Difference: 2033 (67%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660		140 Watts
GeForce GTX 560		150 Watts
	Difference: 10 Watts (7%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 660 should in theory be a small bit superior to the GeForce GTX 560 in general. (explain)

GeForce GTX 660		144192 MB/sec
GeForce GTX 560		128128 MB/sec
	Difference: 16064 (13%)

Texel Rate

The GeForce GTX 660 is much (approximately 73%) better at anisotropic filtering than the GeForce GTX 560. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce GTX 560		45360 Mtexels/sec
	Difference: 33040 (73%)

Pixel Rate

The GeForce GTX 560 will be a bit (about 10%) more effective at FSAA than the GeForce GTX 660, and also will be able to handle higher screen resolutions better. (explain)

GeForce GTX 560		25920 Mpixels/sec
GeForce GTX 660		23520 Mpixels/sec
	Difference: 2400 (10%)

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 MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better 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 texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total texture units 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 processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.