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GeForce 940M vs GeForce GT 130

Intro

The GeForce 940M comes with a GPU clock speed of 1072 MHz, and the 2048 MB of DDR3 memory runs at 1000 MHz through a 64-bit bus. It also features 384 SPUs, 24 Texture Address Units, and 8 ROPs.

Compare that to the GeForce GT 130, which comes with a clock speed of 500 MHz and a DDR2 memory speed of 250 MHz. It also makes use of a 192-bit bus, and makes use of a 55 nm design. It is comprised of 48 SPUs, 24 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce 940M should perform quite a bit faster than the GeForce GT 130 in general. (explain)

GeForce 940M 16000 MB/sec
GeForce GT 130 12000 MB/sec
Difference: 4000 (33%)

Texel Rate

The GeForce 940M should be a lot (more or less 114%) faster with regards to anisotropic filtering than the GeForce GT 130. (explain)

GeForce 940M 25728 Mtexels/sec
GeForce GT 130 12000 Mtexels/sec
Difference: 13728 (114%)

Pixel Rate

The GeForce 940M is just a bit (approximately 7%) more effective at AA than the GeForce GT 130, and should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce 940M 8576 Mpixels/sec
GeForce GT 130 8000 Mpixels/sec
Difference: 576 (7%)

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 130

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 130
Manufacturer nVidia nVidia
Year March 12 2015 March 10, 2009
Code Name GM108 G94b
Memory 2048 MB 768 MB
Core Speed 1072 MHz 500 MHz
Memory Speed 2000 MHz 500 MHz
Power (Max TDP) (Unknown) watts 75 watts
Bandwidth 16000 MB/sec 12000 MB/sec
Texel Rate 25728 Mtexels/sec 12000 Mtexels/sec
Pixel Rate 8576 Mpixels/sec 8000 Mpixels/sec
Unified Shaders 384 48
Texture Mapping Units 24 24
Render Output Units 8 16
Bus Type DDR3 DDR2
Bus Width 64-bit 192-bit
Fab Process 28 nm 55 nm
Transistors (Unknown) million 505 million
Bus PCIe 3.0 x16 PCIe x16 2.0
DirectX Version DirectX 12 DirectX 10
OpenGL Version OpenGL 4.5 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce 940M

Amazon.com

Check prices at:

GeForce GT 130

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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