GeForce 810M vs GeForce GTX 850M

Intro

Compare that to the GeForce GTX 850M, which features core speeds of 876 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M		15 Watts
GeForce GTX 850M		40 Watts
	Difference: 25 Watts (167%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 850M should theoretically be quite a bit better than the GeForce 810M overall. (explain)

GeForce GTX 850M		32000 MB/sec
GeForce 810M		14400 MB/sec
	Difference: 17600 (122%)

Texel Rate

The GeForce GTX 850M is a lot (approximately 493%) better at texture filtering than the GeForce 810M. (explain)

GeForce GTX 850M		35040 Mtexels/sec
GeForce 810M		5904 Mtexels/sec
	Difference: 29136 (493%)

Pixel Rate

The GeForce GTX 850M should be much (approximately 375%) better at full screen anti-aliasing than the GeForce 810M, and also will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 850M		14016 Mpixels/sec
GeForce 810M		2952 Mpixels/sec
	Difference: 11064 (375%)

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 data (in units of MB per second) that can be transported over the external memory interface in one second. It's calculated 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 better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out 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 outputting the pixels (image) to the screen. The actual pixel fill 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 get to the max fill rate.