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GeForce 8600 GT 512MB DDR2 vs GeForce 920M

Intro

The GeForce 8600 GT 512MB DDR2 comes with a core clock frequency of 540 MHz and a DDR2 memory speed of 400 MHz. It also uses a 128-bit bus, and makes use of a 80 nm design. It is made up of 32 SPUs, 16 TAUs, and 8 ROPs.

Compare all that to the GeForce 920M, which has a core clock frequency of 954 MHz and a DDR3 memory frequency of 900 MHz. It also makes use of a 64-bit memory bus, and uses a 28 nm design. It is comprised of 384 SPUs, 32 Texture Address Units, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce 920M should be just a bit faster than the GeForce 8600 GT 512MB DDR2 overall. (explain)

GeForce 920M 14400 MB/sec
GeForce 8600 GT 512MB DDR2 12800 MB/sec
Difference: 1600 (13%)

Texel Rate

The GeForce 920M should be much (approximately 253%) faster with regards to texture filtering than the GeForce 8600 GT 512MB DDR2. (explain)

GeForce 920M 30528 Mtexels/sec
GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Difference: 21888 (253%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce 920M is a better choice, by a large margin. (explain)

GeForce 920M 7632 Mpixels/sec
GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Difference: 3312 (77%)

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

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GeForce 920M

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 8600 GT 512MB DDR2 GeForce 920M
Manufacturer nVidia nVidia
Year April 2007 March 12 2015
Code Name G84 GK208
Memory 512 MB 2048 MB
Core Speed 540 MHz 954 MHz
Memory Speed 800 MHz 1800 MHz
Power (Max TDP) 47 watts (Unknown) watts
Bandwidth 12800 MB/sec 14400 MB/sec
Texel Rate 8640 Mtexels/sec 30528 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 7632 Mpixels/sec
Unified Shaders 32 384
Texture Mapping Units 16 32
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 moved over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce 8600 GT 512MB DDR2

Amazon.com

Check prices at:

GeForce 920M

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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