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GeForce 825M vs GeForce GT 310

Intro

The GeForce 825M features a core clock speed of 850 MHz and a DDR3 memory frequency of 900 MHz. It also features a 64-bit memory bus, and makes use of a 28 nm design. It is made up of 384 SPUs, 16 TAUs, and 8 Raster Operation Units.

Compare all that to the GeForce GT 310, which comes with a clock frequency of 589 MHz and a DDR2 memory frequency of 1000 MHz. It also uses a 64-bit bus, and makes use of a 40 nm design. It is comprised of 16 SPUs, 8 TAUs, and 4 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 310 31 Watts
GeForce 825M 33 Watts
Difference: 2 Watts (6%)

Memory Bandwidth

Performance-wise, the GeForce GT 310 should theoretically be just a bit superior to the GeForce 825M in general. (explain)

GeForce GT 310 16000 MB/sec
GeForce 825M 14400 MB/sec
Difference: 1600 (11%)

Texel Rate

The GeForce 825M will be much (more or less 189%) better at texture filtering than the GeForce GT 310. (explain)

GeForce 825M 13600 Mtexels/sec
GeForce GT 310 4712 Mtexels/sec
Difference: 8888 (189%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 825M is the winner, by a large margin. (explain)

GeForce 825M 6800 Mpixels/sec
GeForce GT 310 2356 Mpixels/sec
Difference: 4444 (189%)

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 825M

Amazon.com

Check prices at:

GeForce GT 310

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 825M GeForce GT 310
Manufacturer nVidia nVidia
Year January 27 2014 November 2009
Code Name GK208 GT218
Memory 2048 MB 512 MB
Core Speed 850 MHz 589 MHz
Memory Speed 1800 MHz 2000 MHz
Power (Max TDP) 33 watts 31 watts
Bandwidth 14400 MB/sec 16000 MB/sec
Texel Rate 13600 Mtexels/sec 4712 Mtexels/sec
Pixel Rate 6800 Mpixels/sec 2356 Mpixels/sec
Unified Shaders 384 16
Texture Mapping Units 16 8
Render Output Units 8 4
Bus Type DDR3 DDR2
Bus Width 64-bit 64-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 260 million
Bus PCIe 3.0 x8 PCIe 2.0
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.1

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 can be processed per second. This figure is calculated by multiplying the total texture units of the card by the core 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 processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated 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 drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce 825M

Amazon.com

Check prices at:

GeForce GT 310

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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