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GeForce 8600 GT 512MB DDR2 vs GeForce GTX 275

Intro

The GeForce 8600 GT 512MB DDR2 has a GPU clock speed of 540 MHz, and the 512 MB of DDR2 RAM runs at 400 MHz through a 128-bit bus. It also is comprised of 32 Stream Processors, 16 Texture Address Units, and 8 Raster Operation Units.

Compare those specifications to the GeForce GTX 275, which uses a 55 nm design. nVidia has clocked the core speed at 633 MHz. The GDDR3 memory works at a speed of 1134 MHz on this specific card. It features 240 SPUs along with 80 Texture Address Units and 28 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB DDR2 47 Watts
GeForce GTX 275 219 Watts
Difference: 172 Watts (366%)

Memory Bandwidth

The GeForce GTX 275 should theoretically perform much faster than the GeForce 8600 GT 512MB DDR2 in general. (explain)

GeForce GTX 275 127008 MB/sec
GeForce 8600 GT 512MB DDR2 12800 MB/sec
Difference: 114208 (892%)

Texel Rate

The GeForce GTX 275 should be much (about 486%) more effective at texture filtering than the GeForce 8600 GT 512MB DDR2. (explain)

GeForce GTX 275 50640 Mtexels/sec
GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Difference: 42000 (486%)

Pixel Rate

The GeForce GTX 275 should be much (approximately 310%) better at FSAA than the GeForce 8600 GT 512MB DDR2, and should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 275 17724 Mpixels/sec
GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Difference: 13404 (310%)

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 GTX 275

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 GTX 275
Manufacturer nVidia nVidia
Year April 2007 April 9, 2009
Code Name G84 G200b
Memory 512 MB 896 MB
Core Speed 540 MHz 633 MHz
Memory Speed 800 MHz 2268 MHz
Power (Max TDP) 47 watts 219 watts
Bandwidth 12800 MB/sec 127008 MB/sec
Texel Rate 8640 Mtexels/sec 50640 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 17724 Mpixels/sec
Unified Shaders 32 240
Texture Mapping Units 16 80
Render Output Units 8 28
Bus Type DDR2 GDDR3
Bus Width 128-bit 448-bit
Fab Process 80 nm 55 nm
Transistors 289 million 1400 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.1

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the 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 275

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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