GeForce 810M vs GeForce GTX 850M

Intro

Compare those specifications to the GeForce GTX 850M, which features a GPU core clock speed of 876 MHz, and 2048 MB of DDR3 RAM set to run at 1000 MHz through a 128-bit bus. It also is comprised of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation 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

Theoretically speaking, the GeForce GTX 850M is 122% faster than the GeForce 810M in general, due to its higher bandwidth. (explain)

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

Texel Rate

The GeForce GTX 850M will be quite a bit (about 493%) faster with regards to 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 will be a lot (approximately 375%) more effective at full screen anti-aliasing than the GeForce 810M, and also able to handle higher 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 (counted in megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it must 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 AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the graphics 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 maximum amount of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant 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.