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 bus, and makes use of a 28 nm design. It features 2304 SPUs, 192 TAUs, and 48 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 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 quite a bit faster than the GeForce GTX 860M overall. (explain)

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

Texel Rate

The Geforce GTX 780 should be a lot (more or less 117%) better at texture 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 a better choice, by a large margin. (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 largest amount of information (in units of megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core 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, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.