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GeForce 840M vs GeForce 930M

Intro

The GeForce 840M features clock speeds of 1029 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 RAM. It features 384 SPUs as well as 24 TAUs and 8 ROPs.

Compare those specs to the GeForce 930M, which has a clock speed of 928 MHz and a DDR3 memory speed of 900 MHz. It also features a 64-bit bus, and makes use of a 28 nm design. It features 384 SPUs, 24 Texture Address Units, and 8 Raster Operation 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 840M 1600 points
GeForce 930M 1490 points
Difference: 110 (7%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The GeForce 840M should in theory perform a bit faster than the GeForce 930M in general. (explain)

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

Texel Rate

The GeForce 840M should be a little bit (more or less 11%) more effective at texture filtering than the GeForce 930M. (explain)

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

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce 840M is the winner, though only just barely. (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 largest amount of information (counted in MB per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the 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 amount of texture map elements (texels) that can be processed in one second. This number 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its 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 clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max 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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