GeForce GTX 980 vs Geforce GTX 680

Intro

Compare those specs to the Geforce GTX 680, which features a GPU core clock speed of 1006 MHz, and 2048 MB of GDDR5 RAM running at 1502 MHz through a 256-bit bus. It also is comprised of 1536 Stream Processors, 128 TAUs, and 32 Raster Operation Units.

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 980		13552 points
Geforce GTX 680		7650 points
	Difference: 5902 (77%)

Grand Theft Auto V | 1920x1080 | Very High

GeForce GTX 980		63 FPS
Geforce GTX 680		38 FPS
	Difference: 25 (66%)

Ethereum Mining Hash Rate

GeForce GTX 980		20 Mh/s
Geforce GTX 680		16 Mh/s
	Difference: 4 (25%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980		165 Watts
Geforce GTX 680		195 Watts
	Difference: 30 Watts (18%)

Memory Bandwidth

Performance-wise, the GeForce GTX 980 should theoretically be a little bit better than the Geforce GTX 680 in general. (explain)

GeForce GTX 980		224000 MB/sec
Geforce GTX 680		192256 MB/sec
	Difference: 31744 (17%)

Texel Rate

The GeForce GTX 980 is just a bit (about 12%) faster with regards to AF than the Geforce GTX 680. (explain)

GeForce GTX 980		144128 Mtexels/sec
Geforce GTX 680		128768 Mtexels/sec
	Difference: 15360 (12%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 980 is the winner, and very much so. (explain)

GeForce GTX 980		72064 Mpixels/sec
Geforce GTX 680		32192 Mpixels/sec
	Difference: 39872 (124%)

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 largest amount of data (in units of MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per 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 amount of Raster Operations Pipelines by the clock 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 output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.