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GeForce 810M vs GeForce 820M

Intro

The GeForce 810M features a clock speed of 738 MHz and a DDR3 memory speed of 900 MHz. It also features a 64-bit bus, and uses a 28 nm design. It is made up of 48 SPUs, 8 TAUs, and 4 ROPs.

Compare those specifications to the GeForce 820M, which features clock speeds of 719 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 96 SPUs along with 16 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically, the GeForce 820M should perform a bit faster than the GeForce 810M overall. (explain)

GeForce 820M 16000 MB/sec
GeForce 810M 14400 MB/sec
Difference: 1600 (11%)

Texel Rate

The GeForce 820M is quite a bit (approximately 95%) faster with regards to texture filtering than the GeForce 810M. (explain)

GeForce 820M 11504 Mtexels/sec
GeForce 810M 5904 Mtexels/sec
Difference: 5600 (95%)

Pixel Rate

The GeForce 810M is a small bit (approximately 3%) better at AA than the GeForce 820M, and should be able to handle higher screen resolutions more effectively. (explain)

GeForce 810M 2952 Mpixels/sec
GeForce 820M 2876 Mpixels/sec
Difference: 76 (3%)

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

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GeForce 810M

Amazon.com

Check prices at:

GeForce 820M

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce 810M GeForce 820M
Manufacturer nVidia nVidia
Year February 2014 February 2014
Code Name GF117 GF117
Memory 1024 MB 2048 MB
Core Speed 738 MHz 719 MHz
Memory Speed 1800 MHz 2000 MHz
Power (Max TDP) 15 watts 15 watts
Bandwidth 14400 MB/sec 16000 MB/sec
Texel Rate 5904 Mtexels/sec 11504 Mtexels/sec
Pixel Rate 2952 Mpixels/sec 2876 Mpixels/sec
Unified Shaders 48 96
Texture Mapping Units 8 16
Render Output Units 4 4
Bus Type DDR3 DDR3
Bus Width 64-bit 64-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 2.0 x16 PCIe 2.0 x16
DirectX Version DirectX 12 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses 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 applied per second. This number 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 card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also 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 ability to reach the max fill rate.

Display Prices

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GeForce 810M

Amazon.com

Check prices at:

GeForce 820M

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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