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GeForce 830M vs GeForce GT 310

Intro

The GeForce 830M uses a 28 nm design. nVidia has set the core speed at 1029 MHz. The DDR3 memory runs at a frequency of 900 MHz on this specific model. It features 256 SPUs along with 16 TAUs and 8 Rasterization Operator Units.

Compare that to the GeForce GT 310, which has a core clock speed 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 features 16 SPUs, 8 TAUs, and 4 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 830M 25 Watts
GeForce GT 310 31 Watts
Difference: 6 Watts (24%)

Memory Bandwidth

In theory, the GeForce GT 310 will be 11% quicker than the GeForce 830M in general, because of its greater data rate. (explain)

GeForce GT 310 16000 MB/sec
GeForce 830M 14400 MB/sec
Difference: 1600 (11%)

Texel Rate

The GeForce 830M is a lot (approximately 249%) faster with regards to texture filtering than the GeForce GT 310. (explain)

GeForce 830M 16464 Mtexels/sec
GeForce GT 310 4712 Mtexels/sec
Difference: 11752 (249%)

Pixel Rate

The GeForce 830M should be a lot (approximately 249%) faster with regards to FSAA than the GeForce GT 310, and should be capable of handling higher resolutions more effectively. (explain)

GeForce 830M 8232 Mpixels/sec
GeForce GT 310 2356 Mpixels/sec
Difference: 5876 (249%)

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 830M

Amazon.com

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GeForce GT 310

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 830M GeForce GT 310
Manufacturer nVidia nVidia
Year March 12 2014 November 2009
Code Name GM108 GT218
Memory 2048 MB 512 MB
Core Speed 1029 MHz 589 MHz
Memory Speed 1800 MHz 2000 MHz
Power (Max TDP) 25 watts 31 watts
Bandwidth 14400 MB/sec 16000 MB/sec
Texel Rate 16464 Mtexels/sec 4712 Mtexels/sec
Pixel Rate 8232 Mpixels/sec 2356 Mpixels/sec
Unified Shaders 256 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 x16 PCIe 2.0
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.1

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be transported past the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it should 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 number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The better 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 maximum amount of pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce 830M

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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