GeForce GTX 860M vs Geforce GTX 680

Intro

Compare those specifications to the Geforce GTX 680, which has a clock speed of 1006 MHz and a GDDR5 memory frequency of 1502 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

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

Theoretically speaking, the Geforce GTX 680 is 200% faster than the GeForce GTX 860M overall, due to its greater bandwidth. (explain)

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

Texel Rate

The Geforce GTX 680 is quite a bit (more or less 68%) faster with regards to AF than the GeForce GTX 860M. (explain)

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

Pixel Rate

The Geforce GTX 680 is a lot (more or less 152%) faster with regards to full screen anti-aliasing than the GeForce GTX 860M, and capable of handling higher screen resolutions more effectively. (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: Bandwidth is the max amount of data (in units of megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.