GeForce 810M vs GeForce 8400 GS 512MB

Intro

Compare those specs to the GeForce 8400 GS 512MB, which has core speeds of 650 MHz on the GPU, and 400 MHz on the 512 MB of DDR2 RAM. It features 16 SPUs along with 8 Texture Address Units 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

Theoretically speaking, the GeForce 810M will be 125% faster than the GeForce 8400 GS 512MB in general, because of its greater bandwidth. (explain)

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

Texel Rate

The GeForce 810M will be just a bit (approximately 14%) faster with regards to anisotropic filtering 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 will be just a bit (approximately 14%) better at FSAA than the GeForce 8400 GS 512MB, and should be capable of handling higher screen 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 maximum amount of data (counted in MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units of the card by the core clock 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 processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core 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 fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.