GeForce GTX 275 vs GeForce GTX 860M

Intro

Compare all of that to the GeForce GTX 860M, which makes use of a 28 nm design. nVidia has clocked the core speed at 797 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this specific card. It features 1152 SPUs along with 96 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce GTX 275		219 Watts
	Difference: 174 Watts (387%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 275 should be much faster than the GeForce GTX 860M in general. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 63008 (98%)

Texel Rate

The GeForce GTX 860M will be a lot (approximately 51%) faster with regards to anisotropic filtering than the GeForce GTX 275. (explain)

GeForce GTX 860M		76512 Mtexels/sec
GeForce GTX 275		50640 Mtexels/sec
	Difference: 25872 (51%)

Pixel Rate

The GeForce GTX 275 is much (about 39%) more effective at anti-aliasing than the GeForce GTX 860M, and will be able to handle higher resolutions more effectively. (explain)

GeForce GTX 275		17724 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 4972 (39%)

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 maximum amount of information (in units of megabytes per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 can be applied per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.