GeForce 810M vs GeForce 8400 GS 512MB

Intro

Compare those specs to the GeForce 8400 GS 512MB, which uses a 80 nm design. nVidia has set the core frequency at 650 MHz. The DDR2 memory is set to run at a speed of 400 MHz on this particular model. It features 16 SPUs as well as 8 TAUs and 4 Rasterization Operator Units.

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

In theory, the GeForce 810M should be much 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 will be a small bit (more or less 14%) faster with regards to 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 a small bit (about 14%) more effective at AA than the GeForce 8400 GS 512MB, and able to handle higher resolutions while still performing well. (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 largest amount of data (counted in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 can be processed per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.