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GeForce 940M vs GeForce GT 340 1GB

Intro

The GeForce 940M makes use of a 28 nm design. nVidia has set the core frequency at 1072 MHz. The DDR3 memory is set to run at a frequency of 1000 MHz on this particular card. It features 384 SPUs along with 24 TAUs and 8 ROPs.

Compare those specs to the GeForce GT 340 1GB, which makes use of a 40 nm design. nVidia has set the core frequency at 550 MHz. The GDDR5 RAM works at a frequency of 850 MHz on this model. It features 96 SPUs as well as 32 TAUs and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GT 340 1GB is 240% faster than the GeForce 940M overall, because of its greater data rate. (explain)

GeForce GT 340 1GB 54400 MB/sec
GeForce 940M 16000 MB/sec
Difference: 38400 (240%)

Texel Rate

The GeForce 940M should be much (about 46%) faster with regards to anisotropic filtering than the GeForce GT 340 1GB. (explain)

GeForce 940M 25728 Mtexels/sec
GeForce GT 340 1GB 17600 Mtexels/sec
Difference: 8128 (46%)

Pixel Rate

The GeForce 940M is a lot (about 95%) better at AA than the GeForce GT 340 1GB, and capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce 940M 8576 Mpixels/sec
GeForce GT 340 1GB 4400 Mpixels/sec
Difference: 4176 (95%)

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 340 1GB

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 940M GeForce GT 340 1GB
Manufacturer nVidia nVidia
Year March 12 2015 February 2010
Code Name GM108 GT215
Memory 2048 MB 1024 MB
Core Speed 1072 MHz 550 MHz
Memory Speed 2000 MHz 3400 MHz
Power (Max TDP) (Unknown) watts 69 watts
Bandwidth 16000 MB/sec 54400 MB/sec
Texel Rate 25728 Mtexels/sec 17600 Mtexels/sec
Pixel Rate 8576 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 384 96
Texture Mapping Units 24 32
Render Output Units 8 8
Bus Type DDR3 GDDR5
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 maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the video 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 maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of 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 940M

Amazon.com

Check prices at:

GeForce GT 340 1GB

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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