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GeForce 810M vs GeForce 825M

Intro

The GeForce 810M has a GPU clock speed of 738 MHz, and the 1024 MB of DDR3 RAM runs at 900 MHz through a 64-bit bus. It also features 48 Stream Processors, 8 Texture Address Units, and 4 Raster Operation Units.

Compare all that to the GeForce 825M, which uses a 28 nm design. nVidia has clocked the core speed at 850 MHz. The DDR3 memory is set to run at a speed of 900 MHz on this particular model. It features 384 SPUs along with 16 TAUs and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 810M 15 Watts
GeForce 825M 33 Watts
Difference: 18 Watts (120%)

Memory Bandwidth

Both cards have the exact same memory bandwidth, so in theory they should have identical performance. (explain)

Texel Rate

The GeForce 825M will be quite a bit (approximately 130%) faster with regards to AF than the GeForce 810M. (explain)

GeForce 825M 13600 Mtexels/sec
GeForce 810M 5904 Mtexels/sec
Difference: 7696 (130%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 825M is the winner, by a large margin. (explain)

GeForce 825M 6800 Mpixels/sec
GeForce 810M 2952 Mpixels/sec
Difference: 3848 (130%)

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 825M

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 825M
Manufacturer nVidia nVidia
Year February 2014 January 27 2014
Code Name GF117 GK208
Memory 1024 MB 2048 MB
Core Speed 738 MHz 850 MHz
Memory Speed 1800 MHz 1800 MHz
Power (Max TDP) 15 watts 33 watts
Bandwidth 14400 MB/sec 14400 MB/sec
Texel Rate 5904 Mtexels/sec 13600 Mtexels/sec
Pixel Rate 2952 Mpixels/sec 6800 Mpixels/sec
Unified Shaders 48 384
Texture Mapping Units 8 16
Render Output Units 4 8
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 3.0 x8
DirectX Version DirectX 12 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of 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 quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce 810M

Amazon.com

Check prices at:

GeForce 825M

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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