GeForce GTX 1080 vs Geforce GTX 680

Intro

Compare those specifications to the Geforce GTX 680, which features a core clock frequency of 1006 MHz and a GDDR5 memory frequency of 1502 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It is comprised of 1536 SPUs, 128 TAUs, 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 1080		21942 points
Geforce GTX 680		7650 points
	Difference: 14292 (187%)

Ethereum Mining Hash Rate

GeForce GTX 1080		20 Mh/s
Geforce GTX 680		16 Mh/s
	Difference: 4 (25%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1080		180 Watts
Geforce GTX 680		195 Watts
	Difference: 15 Watts (8%)

Memory Bandwidth

Performance-wise, the GeForce GTX 1080 should in theory be quite a bit superior to the Geforce GTX 680 in general. (explain)

GeForce GTX 1080		327680 MB/sec
Geforce GTX 680		192256 MB/sec
	Difference: 135424 (70%)

Texel Rate

The GeForce GTX 1080 should be much (approximately 100%) faster with regards to anisotropic filtering than the Geforce GTX 680. (explain)

GeForce GTX 1080		257120 Mtexels/sec
Geforce GTX 680		128768 Mtexels/sec
	Difference: 128352 (100%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 1080 is the winner, by a large margin. (explain)

GeForce GTX 1080		102848 Mpixels/sec
Geforce GTX 680		32192 Mpixels/sec
	Difference: 70656 (219%)

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 (in units of megabytes per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of 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 output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.