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GeForce 8600 GT 512MB DDR2 vs GeForce 940M

Intro

The GeForce 8600 GT 512MB DDR2 features a GPU core clock speed of 540 MHz, and the 512 MB of DDR2 memory is set to run at 400 MHz through a 128-bit bus. It also is comprised of 32 SPUs, 16 Texture Address Units, and 8 Raster Operation Units.

Compare those specifications to the GeForce 940M, which features core speeds of 1072 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 memory. It features 384 SPUs as well as 24 Texture Address Units and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce 940M should in theory be a lot superior to the GeForce 8600 GT 512MB DDR2 overall. (explain)

GeForce 940M 16000 MB/sec
GeForce 8600 GT 512MB DDR2 12800 MB/sec
Difference: 3200 (25%)

Texel Rate

The GeForce 940M should be a lot (about 198%) more effective at texture filtering than the GeForce 8600 GT 512MB DDR2. (explain)

GeForce 940M 25728 Mtexels/sec
GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Difference: 17088 (198%)

Pixel Rate

The GeForce 940M will be quite a bit (more or less 99%) more effective at full screen anti-aliasing than the GeForce 8600 GT 512MB DDR2, and capable of handling higher resolutions without slowing down too much. (explain)

GeForce 940M 8576 Mpixels/sec
GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Difference: 4256 (99%)

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 8600 GT 512MB DDR2

Amazon.com

Check prices at:

GeForce 940M

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 8600 GT 512MB DDR2 GeForce 940M
Manufacturer nVidia nVidia
Year April 2007 March 12 2015
Code Name G84 GM108
Memory 512 MB 2048 MB
Core Speed 540 MHz 1072 MHz
Memory Speed 800 MHz 2000 MHz
Power (Max TDP) 47 watts (Unknown) watts
Bandwidth 12800 MB/sec 16000 MB/sec
Texel Rate 8640 Mtexels/sec 25728 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 8576 Mpixels/sec
Unified Shaders 32 384
Texture Mapping Units 16 24
Render Output Units 8 8
Bus Type DDR2 DDR3
Bus Width 128-bit 64-bit
Fab Process 80 nm 28 nm
Transistors 289 million (Unknown) million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 12
OpenGL Version OpenGL 3.0 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster 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 processed in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many 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 8600 GT 512MB DDR2

Amazon.com

Check prices at:

GeForce 940M

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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