GeForce 810M vs GeForce GTX 660

Intro

Compare all of that to the GeForce GTX 660, which comes with core clock speeds of 980 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 RAM. It features 960 SPUs as well as 80 Texture Address Units and 24 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M		15 Watts
GeForce GTX 660		140 Watts
	Difference: 125 Watts (833%)

Memory Bandwidth

Theoretically, the GeForce GTX 660 should perform much faster than the GeForce 810M overall. (explain)

GeForce GTX 660		144192 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 129792 (901%)

Texel Rate

The GeForce GTX 660 should be much (approximately 1228%) faster with regards to texture filtering than the GeForce 810M. (explain)

GeForce GTX 660		78400 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 72496 (1228%)

Pixel Rate

The GeForce GTX 660 is quite a bit (approximately 697%) faster with regards to AA than the GeForce 810M, and will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 660		23520 Mpixels/sec
GeForce 810M		2952 Mpixels/sec
	Difference: 20568 (697%)

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 maximum amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 can be applied in one second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.