GeForce 810M vs GeForce 8400 GS 512MB

Intro

Compare all of that to the GeForce 8400 GS 512MB, which comes with GPU clock speed of 650 MHz, and 512 MB of DDR2 RAM set to run at 400 MHz through a 64-bit bus. It also is made up of 16 SPUs, 8 TAUs, and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M		15 Watts
GeForce 8400 GS 512MB		40 Watts
	Difference: 25 Watts (167%)

Memory Bandwidth

The GeForce 810M should in theory be quite a bit faster than the GeForce 8400 GS 512MB in general. (explain)

GeForce 810M		14400 MB/sec
GeForce 8400 GS 512MB		6400 MB/sec
	Difference: 8000 (125%)

Texel Rate

The GeForce 810M is a bit (more or less 14%) better at AF than the GeForce 8400 GS 512MB. (explain)

GeForce 810M		5904 Mtexels/sec
GeForce 8400 GS 512MB		5200 Mtexels/sec
	Difference: 704 (14%)

Pixel Rate

The GeForce 810M is just a bit (about 14%) better at AA than the GeForce 8400 GS 512MB, and also should be capable of handling higher resolutions better. (explain)

GeForce 810M		2952 Mpixels/sec
GeForce 8400 GS 512MB		2600 Mpixels/sec
	Difference: 352 (14%)

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 (in units of MB per second) that can be moved past 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 memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock 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 fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.