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GeForce 940M vs GeForce GT 310

Intro

The GeForce 940M features clock speeds of 1072 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 RAM. It features 384 SPUs along with 24 TAUs and 8 ROPs.

Compare all of that to the GeForce GT 310, which comes with core speeds of 589 MHz on the GPU, and 1000 MHz on the 512 MB of DDR2 RAM. It features 16 SPUs along with 8 TAUs and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so theoretically they should have identical performance. (explain)

Texel Rate

The GeForce 940M is quite a bit (about 446%) more effective at AF than the GeForce GT 310. (explain)

GeForce 940M 25728 Mtexels/sec
GeForce GT 310 4712 Mtexels/sec
Difference: 21016 (446%)

Pixel Rate

The GeForce 940M should be much (about 264%) more effective at FSAA than the GeForce GT 310, and also should be capable of handling higher resolutions while still performing well. (explain)

GeForce 940M 8576 Mpixels/sec
GeForce GT 310 2356 Mpixels/sec
Difference: 6220 (264%)

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 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.

Specifications

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Model GeForce 940M GeForce GT 310
Manufacturer nVidia nVidia
Year March 12 2015 November 2009
Code Name GM108 GT218
Memory 2048 MB 512 MB
Core Speed 1072 MHz 589 MHz
Memory Speed 2000 MHz 2000 MHz
Power (Max TDP) (Unknown) watts 31 watts
Bandwidth 16000 MB/sec 16000 MB/sec
Texel Rate 25728 Mtexels/sec 4712 Mtexels/sec
Pixel Rate 8576 Mpixels/sec 2356 Mpixels/sec
Unified Shaders 384 16
Texture Mapping Units 24 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 maximum amount of data (measured in MB per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce 940M

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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