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GeForce 8600 GT 1GB GDDR3 vs GeForce GTX 590

Intro

The GeForce 8600 GT 1GB GDDR3 features a clock speed of 540 MHz and a GDDR3 memory frequency of 700 MHz. It also makes use of a 128-bit memory bus, and uses a 80 nm design. It is made up of 32 SPUs, 16 TAUs, and 8 Raster Operation Units.

Compare that to the GeForce GTX 590, which has GPU clock speed of 607 MHz, and 1536 MB of GDDR5 RAM running at 855 MHz through a 384-bit bus. It also is made up of 512 SPUs, 64 Texture Address Units, and 48 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 1GB GDDR3 47 Watts
GeForce GTX 590 365 Watts
Difference: 318 Watts (677%)

Memory Bandwidth

In theory, the GeForce GTX 590 should be a lot faster than the GeForce 8600 GT 1GB GDDR3 in general. (explain)

GeForce GTX 590 328320 MB/sec
GeForce 8600 GT 1GB GDDR3 22400 MB/sec
Difference: 305920 (1366%)

Texel Rate

The GeForce GTX 590 will be much (approximately 799%) more effective at anisotropic filtering than the GeForce 8600 GT 1GB GDDR3. (explain)

GeForce GTX 590 77696 Mtexels/sec
GeForce 8600 GT 1GB GDDR3 8640 Mtexels/sec
Difference: 69056 (799%)

Pixel Rate

The GeForce GTX 590 should be a lot (about 1249%) better at full screen anti-aliasing than the GeForce 8600 GT 1GB GDDR3, and also capable of handling higher resolutions better. (explain)

GeForce GTX 590 58272 Mpixels/sec
GeForce 8600 GT 1GB GDDR3 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 1GB GDDR3

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 1GB GDDR3 GeForce GTX 590
Manufacturer nVidia nVidia
Year April 2007 March 2011
Code Name G84 GF110
Memory 1024 MB 1536 MB (x2)
Core Speed 540 MHz 607 MHz (x2)
Memory Speed 1400 MHz 3420 MHz (x2)
Power (Max TDP) 47 watts 365 watts
Bandwidth 22400 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 GDDR3 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 maximum amount of information (measured in megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is worked out 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce 8600 GT 1GB GDDR3

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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