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GeForce 8600 GT 256MB DDR2 vs GeForce GTX 480

Intro

The GeForce 8600 GT 256MB DDR2 comes with a GPU clock speed of 540 MHz, and the 256 MB of DDR2 memory runs at 400 MHz through a 128-bit bus. It also is made up of 32 Stream Processors, 16 Texture Address Units, and 8 Raster Operation Units.

Compare all that to the GeForce GTX 480, which has GPU core speed of 700 MHz, and 1536 MB of GDDR5 memory set to run at 924 MHz through a 384-bit bus. It also is comprised of 480 SPUs, 60 TAUs, and 48 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 256MB DDR2 47 Watts
GeForce GTX 480 250 Watts
Difference: 203 Watts (432%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 480 should be 1286% quicker than the GeForce 8600 GT 256MB DDR2 in general, because of its higher bandwidth. (explain)

GeForce GTX 480 177408 MB/sec
GeForce 8600 GT 256MB DDR2 12800 MB/sec
Difference: 164608 (1286%)

Texel Rate

The GeForce GTX 480 will be a lot (about 386%) faster with regards to texture filtering than the GeForce 8600 GT 256MB DDR2. (explain)

GeForce GTX 480 42000 Mtexels/sec
GeForce 8600 GT 256MB DDR2 8640 Mtexels/sec
Difference: 33360 (386%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 480 is superior to the GeForce 8600 GT 256MB DDR2, by far. (explain)

GeForce GTX 480 33600 Mpixels/sec
GeForce 8600 GT 256MB DDR2 4320 Mpixels/sec
Difference: 29280 (678%)

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 256MB DDR2

Amazon.com

Check prices at:

GeForce GTX 480

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 256MB DDR2 GeForce GTX 480
Manufacturer nVidia nVidia
Year April 2007 March 2010
Code Name G84 GF100
Memory 256 MB 1536 MB
Core Speed 540 MHz 700 MHz
Memory Speed 800 MHz 3696 MHz
Power (Max TDP) 47 watts 250 watts
Bandwidth 12800 MB/sec 177408 MB/sec
Texel Rate 8640 Mtexels/sec 42000 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 33600 Mpixels/sec
Unified Shaders 32 480
Texture Mapping Units 16 60
Render Output Units 8 48
Bus Type DDR2 GDDR5
Bus Width 128-bit 384-bit
Fab Process 80 nm 40 nm
Transistors 289 million 3000 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once 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 applied per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in one 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 - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce 8600 GT 256MB DDR2

Amazon.com

Check prices at:

GeForce GTX 480

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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