GeForce 810M vs GeForce GTX 285 2GB

Intro

Compare all that to the GeForce GTX 285 2GB, which uses a 55 nm design. nVidia has clocked the core frequency at 648 MHz. The GDDR3 RAM works at a speed of 1242 MHz on this particular model. It features 240 SPUs as well as 80 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M		15 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 189 Watts (1260%)

Memory Bandwidth

Performance-wise, the GeForce GTX 285 2GB should in theory be much better than the GeForce 810M overall. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 144576 (1004%)

Texel Rate

The GeForce GTX 285 2GB is a lot (approximately 778%) better at texture filtering than the GeForce 810M. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 45936 (778%)

Pixel Rate

The GeForce GTX 285 2GB is much (approximately 602%) more effective at full screen anti-aliasing than the GeForce 810M, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
GeForce 810M		2952 Mpixels/sec
	Difference: 17784 (602%)

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 (counted in MB per second) that can be transferred across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it must 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of 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 per second.

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