GeForce 810M vs GeForce GT 320

Intro

Compare that to the GeForce GT 320, which has a GPU core clock speed of 540 MHz, and 1024 MB of GDDR3 RAM set to run at 790 MHz through a 128-bit bus. It also is made up of 72 Stream Processors, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M		15 Watts
GeForce GT 320		43 Watts
	Difference: 28 Watts (187%)

Memory Bandwidth

In theory, the GeForce GT 320 is 76% faster than the GeForce 810M in general, due to its greater bandwidth. (explain)

GeForce GT 320		25280 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 10880 (76%)

Texel Rate

The GeForce GT 320 is quite a bit (more or less 120%) faster with regards to texture filtering than the GeForce 810M. (explain)

GeForce GT 320		12960 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 7056 (120%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GT 320 is superior to the GeForce 810M, by far. (explain)

GeForce GT 320		4320 Mpixels/sec
GeForce 810M		2952 Mpixels/sec
	Difference: 1368 (46%)

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 data (in units of MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's interface 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 higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total amount of texture units of the card by the core clock 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 in a second.

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