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GeForce 810M vs GeForce 940M

Intro

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

Compare that to the GeForce 940M, which has core speeds of 1072 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 RAM. It features 384 SPUs as well as 24 Texture Address Units and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 940M should theoretically perform just a bit faster than the GeForce 810M in general. (explain)

GeForce 940M 16000 MB/sec
GeForce 810M 14400 MB/sec
Difference: 1600 (11%)

Texel Rate

The GeForce 940M should be much (more or less 336%) faster with regards to anisotropic filtering than the GeForce 810M. (explain)

GeForce 940M 25728 Mtexels/sec
GeForce 810M 5904 Mtexels/sec
Difference: 19824 (336%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 940M is a better choice, by far. (explain)

GeForce 940M 8576 Mpixels/sec
GeForce 810M 2952 Mpixels/sec
Difference: 5624 (191%)

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 940M

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 940M
Manufacturer nVidia nVidia
Year February 2014 March 12 2015
Code Name GF117 GM108
Memory 1024 MB 2048 MB
Core Speed 738 MHz 1072 MHz
Memory Speed 1800 MHz 2000 MHz
Power (Max TDP) 15 watts (Unknown) watts
Bandwidth 14400 MB/sec 16000 MB/sec
Texel Rate 5904 Mtexels/sec 25728 Mtexels/sec
Pixel Rate 2952 Mpixels/sec 8576 Mpixels/sec
Unified Shaders 48 384
Texture Mapping Units 8 24
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 x16
DirectX Version DirectX 12 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on 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 ability to get to the max fill rate.

Display Prices

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GeForce 810M

Amazon.com

Check prices at:

GeForce 940M

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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