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GeForce 8600 GT 512MB DDR2 vs GeForce GTX 590

Intro

The GeForce 8600 GT 512MB DDR2 features clock speeds of 540 MHz on the GPU, and 400 MHz on the 512 MB of DDR2 memory. It features 32 SPUs as well as 16 Texture Address Units and 8 ROPs.

Compare those specs to the GeForce GTX 590, which uses a 40 nm design. nVidia has set the core speed at 607 MHz. The GDDR5 RAM is set to run at a frequency of 855 MHz on this model. It features 512 SPUs as well as 64 TAUs and 48 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB DDR2 47 Watts
GeForce GTX 590 365 Watts
Difference: 318 Watts (677%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 590 is 2465% quicker than the GeForce 8600 GT 512MB DDR2 overall, due to its higher bandwidth. (explain)

GeForce GTX 590 328320 MB/sec
GeForce 8600 GT 512MB DDR2 12800 MB/sec
Difference: 315520 (2465%)

Texel Rate

The GeForce GTX 590 will be quite a bit (about 799%) better at texture filtering than the GeForce 8600 GT 512MB DDR2. (explain)

GeForce GTX 590 77696 Mtexels/sec
GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Difference: 69056 (799%)

Pixel Rate

The GeForce GTX 590 is much (about 1249%) more effective at full screen anti-aliasing than the GeForce 8600 GT 512MB DDR2, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 590 58272 Mpixels/sec
GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Difference: 53952 (1249%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce 8600 GT 512MB DDR2

Amazon.com

Check prices at:

GeForce GTX 590

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 GTX 590
Manufacturer nVidia nVidia
Year April 2007 March 2011
Code Name G84 GF110
Memory 512 MB 1536 MB (x2)
Core Speed 540 MHz 607 MHz (x2)
Memory Speed 800 MHz 3420 MHz (x2)
Power (Max TDP) 47 watts 365 watts
Bandwidth 12800 MB/sec 328320 MB/sec
Texel Rate 8640 Mtexels/sec 77696 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 58272 Mpixels/sec
Unified Shaders 32 512 (x2)
Texture Mapping Units 16 64 (x2)
Render Output Units 8 48 (x2)
Bus Type DDR2 GDDR5
Bus Width 128-bit 384-bit (x2)
Fab Process 80 nm 40 nm
Transistors 289 million 3000 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of MB per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR 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 is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at 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 the video card could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory 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 GTX 590

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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