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GeForce 8600 GT 1GB DDR2 vs GeForce GTX 850M

Intro

The GeForce 8600 GT 1GB DDR2 uses a 80 nm design. nVidia has set the core frequency at 540 MHz. The DDR2 memory works at a frequency of 400 MHz on this specific model. It features 32 SPUs as well as 16 Texture Address Units and 8 ROPs.

Compare those specs to the GeForce GTX 850M, which features a GPU core clock speed of 876 MHz, and 2048 MB of DDR3 RAM set to run at 1000 MHz through a 128-bit bus. It also features 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M 40 Watts
GeForce 8600 GT 1GB DDR2 47 Watts
Difference: 7 Watts (18%)

Memory Bandwidth

In theory, the GeForce GTX 850M should be 150% faster than the GeForce 8600 GT 1GB DDR2 in general, because of its higher data rate. (explain)

GeForce GTX 850M 32000 MB/sec
GeForce 8600 GT 1GB DDR2 12800 MB/sec
Difference: 19200 (150%)

Texel Rate

The GeForce GTX 850M will be much (about 306%) better at texture filtering than the GeForce 8600 GT 1GB DDR2. (explain)

GeForce GTX 850M 35040 Mtexels/sec
GeForce 8600 GT 1GB DDR2 8640 Mtexels/sec
Difference: 26400 (306%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 850M is a better choice, by far. (explain)

GeForce GTX 850M 14016 Mpixels/sec
GeForce 8600 GT 1GB DDR2 4320 Mpixels/sec
Difference: 9696 (224%)

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 1GB DDR2

Amazon.com

Check prices at:

GeForce GTX 850M

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 1GB DDR2 GeForce GTX 850M
Manufacturer nVidia nVidia
Year April 2007 March 12 2014
Code Name G84 GM107
Memory 1024 MB 2048 MB
Core Speed 540 MHz 876 MHz
Memory Speed 800 MHz 2000 MHz
Power (Max TDP) 47 watts 40 watts
Bandwidth 12800 MB/sec 32000 MB/sec
Texel Rate 8640 Mtexels/sec 35040 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 14016 Mpixels/sec
Unified Shaders 32 640
Texture Mapping Units 16 40
Render Output Units 8 16
Bus Type DDR2 DDR3
Bus Width 128-bit 128-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: Bandwidth is the max amount of data (counted in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 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 AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines 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 rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8600 GT 1GB DDR2

Amazon.com

Check prices at:

GeForce GTX 850M

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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