GeForce GTX 580 vs GeForce GTX 860M

Intro

Compare all that to the GeForce GTX 860M, which features clock speeds of 797 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 RAM. It features 1152 SPUs as well as 96 TAUs and 16 Rasterization Operator 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 580		4956 points
GeForce GTX 860M		4340 points
	Difference: 616 (14%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce GTX 580		244 Watts
	Difference: 199 Watts (442%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 580 should in theory be a lot better than the GeForce GTX 860M overall. (explain)

GeForce GTX 580		192384 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 128384 (201%)

Texel Rate

The GeForce GTX 860M is much (about 55%) better at AF than the GeForce GTX 580. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce GTX 580		49408 Mtexels/sec
	Difference: 27104 (55%)

Pixel Rate

The GeForce GTX 580 should be quite a bit (approximately 191%) better at full screen anti-aliasing than the GeForce GTX 860M, and should be capable of handling higher resolutions better. (explain)

GeForce GTX 580		37056 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 24304 (191%)

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 data (in units of MB per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 applied in one second. This number is worked out by multiplying the total number 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.