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GeForce 820M vs GeForce 930M

Intro

The GeForce 820M has a clock speed of 719 MHz and a DDR3 memory speed of 1000 MHz. It also makes use of a 64-bit bus, and uses a 28 nm design. It is comprised of 96 SPUs, 16 TAUs, and 4 Raster Operation Units.

Compare those specs to the GeForce 930M, which makes use of a 28 nm design. nVidia has set the core speed at 928 MHz. The DDR3 RAM runs at a speed of 900 MHz on this specific card. It features 384 SPUs along with 24 TAUs and 8 Rasterization Operator Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce 930M 1490 points
GeForce 820M 850 points
Difference: 640 (75%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 820M should theoretically perform just a bit faster than the GeForce 930M in general. (explain)

GeForce 820M 16000 MB/sec
GeForce 930M 14400 MB/sec
Difference: 1600 (11%)

Texel Rate

The GeForce 930M will be much (approximately 94%) better at anisotropic filtering than the GeForce 820M. (explain)

GeForce 930M 22272 Mtexels/sec
GeForce 820M 11504 Mtexels/sec
Difference: 10768 (94%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 930M is the winner, by far. (explain)

GeForce 930M 7424 Mpixels/sec
GeForce 820M 2876 Mpixels/sec
Difference: 4548 (158%)

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 820M

Amazon.com

Check prices at:

GeForce 930M

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 820M GeForce 930M
Manufacturer nVidia nVidia
Year February 2014 March 12 2015
Code Name GF117 GM108
Memory 2048 MB 2048 MB
Core Speed 719 MHz 928 MHz
Memory Speed 2000 MHz 1800 MHz
Power (Max TDP) 15 watts (Unknown) watts
Bandwidth 16000 MB/sec 14400 MB/sec
Texel Rate 11504 Mtexels/sec 22272 Mtexels/sec
Pixel Rate 2876 Mpixels/sec 7424 Mpixels/sec
Unified Shaders 96 384
Texture Mapping Units 16 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: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output 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 maximum fill rate.

Display Prices

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GeForce 820M

Amazon.com

Check prices at:

GeForce 930M

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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