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GeForce 810M vs GeForce 825M

Intro

The GeForce 810M has a core clock frequency of 738 MHz and a DDR3 memory frequency of 900 MHz. It also uses a 64-bit memory bus, and makes use of a 28 nm design. It is made up of 48 SPUs, 8 Texture Address Units, and 4 ROPs.

Compare those specifications to the GeForce 825M, which uses a 28 nm design. nVidia has clocked the core frequency at 850 MHz. The DDR3 RAM runs at a speed of 900 MHz on this card. 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 exactly the same memory bandwidth, so theoretically they should perform the same. (explain)

Texel Rate

The GeForce 825M is a lot (about 130%) better at texture filtering than the GeForce 810M. (explain)

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

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 825M is superior to the GeForce 810M, and very much so. (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

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GeForce 825M

Amazon.com

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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 largest amount of data (in units of MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed 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 the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a 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. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines 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 is also dependant on quite a few 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 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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