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GeForce 940M vs GeForce 9800 GT 1GB

Intro

The GeForce 940M features a GPU core clock speed of 1072 MHz, and the 2048 MB of DDR3 RAM runs 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 9800 GT 1GB, which has core clock speeds of 600 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 RAM. It features 112 SPUs along with 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce 9800 GT 1GB should be a lot faster than the GeForce 940M in general. (explain)

GeForce 9800 GT 1GB 57600 MB/sec
GeForce 940M 16000 MB/sec
Difference: 41600 (260%)

Texel Rate

The GeForce 9800 GT 1GB will be a lot (approximately 31%) more effective at texture filtering than the GeForce 940M. (explain)

GeForce 9800 GT 1GB 33600 Mtexels/sec
GeForce 940M 25728 Mtexels/sec
Difference: 7872 (31%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 9800 GT 1GB is the winner, but not by far. (explain)

GeForce 9800 GT 1GB 9600 Mpixels/sec
GeForce 940M 8576 Mpixels/sec
Difference: 1024 (12%)

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

Check prices at:

GeForce 9800 GT 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 9800 GT 1GB
Manufacturer nVidia nVidia
Year March 12 2015 July 2008
Code Name GM108 G92a/b
Memory 2048 MB 1024 MB
Core Speed 1072 MHz 600 MHz
Memory Speed 2000 MHz 1800 MHz
Power (Max TDP) (Unknown) watts 105 watts
Bandwidth 16000 MB/sec 57600 MB/sec
Texel Rate 25728 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 8576 Mpixels/sec 9600 Mpixels/sec
Unified Shaders 384 112
Texture Mapping Units 24 56
Render Output Units 8 16
Bus Type DDR3 GDDR3
Bus Width 64-bit 256-bit
Fab Process 28 nm 65/55 nm
Transistors (Unknown) million 754 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 largest amount of data (in units of MB per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the video 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 most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce 940M

Amazon.com

Check prices at:

GeForce 9800 GT 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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