GeForce GTX 860M vs Geforce GTX 780

Intro

Compare all that to the Geforce GTX 780, which features a core clock frequency of 863 MHz and a GDDR5 memory speed of 1502 MHz. It also features a 384-bit memory bus, and uses a 28 nm design. It is made up of 2304 SPUs, 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 860M		4340 points
	Difference: 5742 (132%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
Geforce GTX 780		250 Watts
	Difference: 205 Watts (456%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 780 should be a lot faster than the GeForce GTX 860M in general. (explain)

Geforce GTX 780		288384 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 224384 (351%)

Texel Rate

The Geforce GTX 780 will be a lot (more or less 117%) better at anisotropic filtering than the GeForce GTX 860M. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce GTX 860M		76512 Mtexels/sec
	Difference: 89184 (117%)

Pixel Rate

If using a high screen resolution is important to you, then the Geforce GTX 780 is the winner, and very much so. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 28672 (225%)

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 (counted in megabytes per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, 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 worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to 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 potential to reach the maximum fill rate.