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GeForce 8600 GT 512MB GDDR3 vs GeForce 9500 GT 512MB GDDR3

Intro

The GeForce 8600 GT 512MB GDDR3 has a clock speed of 540 MHz and a GDDR3 memory frequency of 700 MHz. It also features a 128-bit bus, and makes use of a 80 nm design. It features 32 SPUs, 16 Texture Address Units, and 8 ROPs.

Compare those specifications to the GeForce 9500 GT 512MB GDDR3, which uses a 55 nm design. nVidia has clocked the core frequency at 550 MHz. The GDDR3 RAM runs at a speed of 800 MHz on this model. It features 32 SPUs as well as 16 TAUs and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB GDDR3 47 Watts
GeForce 9500 GT 512MB GDDR3 50 Watts
Difference: 3 Watts (6%)

Memory Bandwidth

In theory, the GeForce 9500 GT 512MB GDDR3 is 14% quicker than the GeForce 8600 GT 512MB GDDR3 overall, due to its greater bandwidth. (explain)

GeForce 9500 GT 512MB GDDR3 25600 MB/sec
GeForce 8600 GT 512MB GDDR3 22400 MB/sec
Difference: 3200 (14%)

Texel Rate

The GeForce 9500 GT 512MB GDDR3 should be just a bit (more or less 2%) better at AF than the GeForce 8600 GT 512MB GDDR3. (explain)

GeForce 9500 GT 512MB GDDR3 8800 Mtexels/sec
GeForce 8600 GT 512MB GDDR3 8640 Mtexels/sec
Difference: 160 (2%)

Pixel Rate

The GeForce 9500 GT 512MB GDDR3 is a little bit (about 2%) more effective at FSAA than the GeForce 8600 GT 512MB GDDR3, and will be able to handle higher resolutions more effectively. (explain)

GeForce 9500 GT 512MB GDDR3 4400 Mpixels/sec
GeForce 8600 GT 512MB GDDR3 4320 Mpixels/sec
Difference: 80 (2%)

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 GDDR3

Amazon.com

Check prices at:

GeForce 9500 GT 512MB GDDR3

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 GDDR3 GeForce 9500 GT 512MB GDDR3
Manufacturer nVidia nVidia
Year April 2007 July 2008
Code Name G84 G96b
Memory 512 MB 512 MB
Core Speed 540 MHz 550 MHz
Memory Speed 1400 MHz 1600 MHz
Power (Max TDP) 47 watts 50 watts
Bandwidth 22400 MB/sec 25600 MB/sec
Texel Rate 8640 Mtexels/sec 8800 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 32 32
Texture Mapping Units 16 16
Render Output Units 8 8
Bus Type GDDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 80 nm 55 nm
Transistors 289 million 314 million
Bus PCIe x16 PCIe x16 2.0, PCI
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it must 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 per second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most 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 Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce 8600 GT 512MB GDDR3

Amazon.com

Check prices at:

GeForce 9500 GT 512MB GDDR3

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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