GeForce GTX 560 vs Geforce GTX 680

Intro

Compare those specifications to the Geforce GTX 680, which features GPU core speed of 1006 MHz, and 2048 MB of GDDR5 memory set to run at 1502 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 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 560		3030 points
	Difference: 4620 (152%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560		150 Watts
Geforce GTX 680		195 Watts
	Difference: 45 Watts (30%)

Memory Bandwidth

The Geforce GTX 680, in theory, should perform a lot faster than the GeForce GTX 560 in general. (explain)

Geforce GTX 680		192256 MB/sec
GeForce GTX 560		128128 MB/sec
	Difference: 64128 (50%)

Texel Rate

The Geforce GTX 680 will be much (about 184%) better at AF than the GeForce GTX 560. (explain)

Geforce GTX 680		128768 Mtexels/sec
GeForce GTX 560		45360 Mtexels/sec
	Difference: 83408 (184%)

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 680 is superior to the GeForce GTX 560, by a large margin. (explain)

Geforce GTX 680		32192 Mpixels/sec
GeForce GTX 560		25920 Mpixels/sec
	Difference: 6272 (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 data (counted in megabytes 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 the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's 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 amount of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.