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GeForce 840M vs GeForce 930M

Intro

The GeForce 840M has a core clock speed of 1029 MHz and a DDR3 memory speed of 1000 MHz. It also uses a 64-bit memory bus, and makes use of a 28 nm design. It is made up of 384 SPUs, 24 Texture Address Units, and 8 ROPs.

Compare those specs to the GeForce 930M, which uses a 28 nm design. nVidia has clocked the core frequency at 928 MHz. The DDR3 memory is set to run at a frequency of 900 MHz on this card. It features 384 SPUs along with 24 TAUs and 8 ROPs.

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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 840M 1600 points
GeForce 930M 1490 points
Difference: 110 (7%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 840M should theoretically be a little bit faster than the GeForce 930M overall. (explain)

GeForce 840M 16000 MB/sec
GeForce 930M 14400 MB/sec
Difference: 1600 (11%)

Texel Rate

The GeForce 840M should be a bit (about 11%) faster with regards to AF than the GeForce 930M. (explain)

GeForce 840M 24696 Mtexels/sec
GeForce 930M 22272 Mtexels/sec
Difference: 2424 (11%)

Pixel Rate

The GeForce 840M is a small bit (more or less 11%) faster with regards to anti-aliasing than the GeForce 930M, and also should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce 840M 8232 Mpixels/sec
GeForce 930M 7424 Mpixels/sec
Difference: 808 (11%)

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 840M

Amazon.com

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GeForce 930M

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 840M GeForce 930M
Manufacturer nVidia nVidia
Year March 12 2014 March 12 2015
Code Name GM108 GM108
Memory 2048 MB 2048 MB
Core Speed 1029 MHz 928 MHz
Memory Speed 2000 MHz 1800 MHz
Power (Max TDP) 30 watts (Unknown) watts
Bandwidth 16000 MB/sec 14400 MB/sec
Texel Rate 24696 Mtexels/sec 22272 Mtexels/sec
Pixel Rate 8232 Mpixels/sec 7424 Mpixels/sec
Unified Shaders 384 384
Texture Mapping Units 24 24
Render Output Units 8 8
Bus Type DDR3 DDR3
Bus Width 64-bit 64-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 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 data (measured in MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce 840M

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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