GeForce GTX 860M vs Geforce GTX 680

Intro

Compare all that to the Geforce GTX 680, which features a clock speed of 1006 MHz and a GDDR5 memory frequency of 1502 MHz. It also features a 256-bit bus, and uses a 28 nm design. It features 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 680		7650 points
GeForce GTX 860M		4340 points
	Difference: 3310 (76%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
Geforce GTX 680		195 Watts
	Difference: 150 Watts (333%)

Memory Bandwidth

In theory, the Geforce GTX 680 is 200% quicker than the GeForce GTX 860M in general, due to its higher bandwidth. (explain)

Geforce GTX 680		192256 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 128256 (200%)

Texel Rate

The Geforce GTX 680 should be much (about 68%) faster with regards to texture filtering than the GeForce GTX 860M. (explain)

Geforce GTX 680		128768 Mtexels/sec
GeForce GTX 860M		76512 Mtexels/sec
	Difference: 52256 (68%)

Pixel Rate

If running with high levels of AA is important to you, then the Geforce GTX 680 is the winner, and very much so. (explain)

Geforce GTX 680		32192 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 19440 (152%)

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 largest amount of information (measured in MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 can be 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 the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.