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GeForce 940M vs GeForce GT 320

Intro

The GeForce 940M comes with a core clock frequency of 1072 MHz and a DDR3 memory speed of 1000 MHz. It also makes use of a 64-bit bus, and makes use of a 28 nm design. It is made up of 384 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Compare those specs to the GeForce GT 320, which features a core clock frequency of 540 MHz and a GDDR3 memory speed of 790 MHz. It also uses a 128-bit bus, and makes use of a 40 nm design. It is comprised of 72 SPUs, 24 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce GT 320 should perform much faster than the GeForce 940M overall. (explain)

GeForce GT 320 25280 MB/sec
GeForce 940M 16000 MB/sec
Difference: 9280 (58%)

Texel Rate

The GeForce 940M will be much (more or less 99%) faster with regards to AF than the GeForce GT 320. (explain)

GeForce 940M 25728 Mtexels/sec
GeForce GT 320 12960 Mtexels/sec
Difference: 12768 (99%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 940M is the winner, by far. (explain)

GeForce 940M 8576 Mpixels/sec
GeForce GT 320 4320 Mpixels/sec
Difference: 4256 (99%)

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 940M

Amazon.com

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GeForce GT 320

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 940M GeForce GT 320
Manufacturer nVidia nVidia
Year March 12 2015 February 2010
Code Name GM108 GT215
Memory 2048 MB 1024 MB
Core Speed 1072 MHz 540 MHz
Memory Speed 2000 MHz 1580 MHz
Power (Max TDP) (Unknown) watts 43 watts
Bandwidth 16000 MB/sec 25280 MB/sec
Texel Rate 25728 Mtexels/sec 12960 Mtexels/sec
Pixel Rate 8576 Mpixels/sec 4320 Mpixels/sec
Unified Shaders 384 72
Texture Mapping Units 24 24
Render Output Units 8 8
Bus Type DDR3 GDDR3
Bus Width 64-bit 128-bit
Fab Process 28 nm 40 nm
Transistors (Unknown) million 727 million
Bus PCIe 3.0 x16 PCIe x16
DirectX Version DirectX 12 DirectX 10.1
OpenGL Version OpenGL 4.5 OpenGL 3.3

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few 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 940M

Amazon.com

Check prices at:

GeForce GT 320

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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