Geforce GTX 680 vs Geforce GTX 780

Intro

Compare that to the Geforce GTX 780, which makes use of a 28 nm design. nVidia has set the core speed at 863 MHz. The GDDR5 memory is set to run at a speed of 1502 MHz on this specific card. It features 2304 SPUs as well as 192 TAUs and 48 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 780		10082 points
Geforce GTX 680		7650 points
	Difference: 2432 (32%)

Grand Theft Auto V | 1920x1080 | Very High

Geforce GTX 780		48 FPS
Geforce GTX 680		38 FPS
	Difference: 10 (26%)

Ethereum Mining Hash Rate

Geforce GTX 780		20 Mh/s
Geforce GTX 680		16 Mh/s
	Difference: 4 (25%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 680		195 Watts
Geforce GTX 780		250 Watts
	Difference: 55 Watts (28%)

Memory Bandwidth

In theory, the Geforce GTX 780 should be a lot faster than the Geforce GTX 680 overall. (explain)

Geforce GTX 780		288384 MB/sec
Geforce GTX 680		192256 MB/sec
	Difference: 96128 (50%)

Texel Rate

The Geforce GTX 780 will be quite a bit (about 29%) faster with regards to anisotropic filtering than the Geforce GTX 680. (explain)

Geforce GTX 780		165696 Mtexels/sec
Geforce GTX 680		128768 Mtexels/sec
	Difference: 36928 (29%)

Pixel Rate

The Geforce GTX 780 will be quite a bit (approximately 29%) faster with regards to FSAA than the Geforce GTX 680, and also will be able to handle higher screen resolutions without losing too much performance. (explain)

Geforce GTX 780		41424 Mpixels/sec
Geforce GTX 680		32192 Mpixels/sec
	Difference: 9232 (29%)

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 information (in units of MB per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, 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 record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to 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 max fill rate.