GeForce 810M vs GeForce GTX 580

Intro

Compare those specs to the GeForce GTX 580, which makes use of a 40 nm design. nVidia has clocked the core speed at 772 MHz. The GDDR5 RAM works at a speed of 1002 MHz on this card. It features 512 SPUs along with 64 TAUs and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M		15 Watts
GeForce GTX 580		244 Watts
	Difference: 229 Watts (1527%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 580 should in theory be quite a bit superior to the GeForce 810M overall. (explain)

GeForce GTX 580		192384 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 177984 (1236%)

Texel Rate

The GeForce GTX 580 should be much (about 737%) more effective at anisotropic filtering than the GeForce 810M. (explain)

GeForce GTX 580		49408 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 43504 (737%)

Pixel Rate

The GeForce GTX 580 is quite a bit (about 1155%) faster with regards to full screen anti-aliasing than the GeForce 810M, and also should be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 580		37056 Mpixels/sec
GeForce 810M		2952 Mpixels/sec
	Difference: 34104 (1155%)

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 max amount of information (measured in megabytes per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock 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 output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.