GeForce GTX 660 Ti vs Geforce GTX 680

Intro

Compare those specifications to the Geforce GTX 680, which makes use of a 28 nm design. nVidia has clocked the core speed at 1006 MHz. The GDDR5 memory runs at a speed of 1502 MHz on this particular model. It features 1536 SPUs along with 128 Texture Address Units and 32 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 680		7650 points
GeForce GTX 660 Ti		6013 points
	Difference: 1637 (27%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
Geforce GTX 680		195 Watts
	Difference: 45 Watts (30%)

Memory Bandwidth

In theory, the Geforce GTX 680 should be a lot faster than the GeForce GTX 660 Ti overall. (explain)

Geforce GTX 680		192256 MB/sec
GeForce GTX 660 Ti		144000 MB/sec
	Difference: 48256 (34%)

Texel Rate

The Geforce GTX 680 should be quite a bit (more or less 26%) better at texture filtering than the GeForce GTX 660 Ti. (explain)

Geforce GTX 680		128768 Mtexels/sec
GeForce GTX 660 Ti		102480 Mtexels/sec
	Difference: 26288 (26%)

Pixel Rate

If running with a high screen resolution is important to you, then the Geforce GTX 680 is superior to the GeForce GTX 660 Ti, and very much so. (explain)

Geforce GTX 680		32192 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 10232 (47%)

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 maximum amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core 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 quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.