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GeForce 940M vs GeForce GT 340 1GB

Intro

The GeForce 940M comes with a GPU core clock speed of 1072 MHz, and the 2048 MB of DDR3 memory is set to run at 1000 MHz through a 64-bit bus. It also is made up of 384 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

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

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GT 340 1GB should be 240% quicker than the GeForce 940M in general, due to its higher data rate. (explain)

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

Texel Rate

The GeForce 940M is much (approximately 46%) faster with regards to texture 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 will be much (approximately 95%) better at anti-aliasing than the GeForce GT 340 1GB, and also should be 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

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 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: Bandwidth is the largest amount of information (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total amount of texture units 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 a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach 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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