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GeForce 8600 GT 256MB DDR2 vs GeForce 9500 GT DDR2

Intro

The GeForce 8600 GT 256MB DDR2 has clock speeds of 540 MHz on the GPU, and 400 MHz on the 256 MB of DDR2 memory. It features 32 SPUs along with 16 TAUs and 8 Rasterization Operator Units.

Compare those specifications to the GeForce 9500 GT DDR2, which features GPU core speed of 550 MHz, and 256 MB of DDR2 RAM set to run at 500 MHz through a 128-bit bus. It also is comprised of 32 Stream Processors, 16 Texture Address Units, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 256MB DDR2 47 Watts
GeForce 9500 GT DDR2 50 Watts
Difference: 3 Watts (6%)

Memory Bandwidth

In theory, the GeForce 9500 GT DDR2 should be quite a bit faster than the GeForce 8600 GT 256MB DDR2 in general. (explain)

GeForce 9500 GT DDR2 16000 MB/sec
GeForce 8600 GT 256MB DDR2 12800 MB/sec
Difference: 3200 (25%)

Texel Rate

The GeForce 9500 GT DDR2 should be a small bit (approximately 2%) better at anisotropic filtering than the GeForce 8600 GT 256MB DDR2. (explain)

GeForce 9500 GT DDR2 8800 Mtexels/sec
GeForce 8600 GT 256MB DDR2 8640 Mtexels/sec
Difference: 160 (2%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce 9500 GT DDR2 is superior to the GeForce 8600 GT 256MB DDR2, but only just. (explain)

GeForce 9500 GT DDR2 4400 Mpixels/sec
GeForce 8600 GT 256MB DDR2 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 256MB DDR2

Amazon.com

Check prices at:

GeForce 9500 GT DDR2

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 9500 GT DDR2
Manufacturer nVidia nVidia
Year April 2007 July 2008
Code Name G84 G96a
Memory 256 MB 256 MB
Core Speed 540 MHz 550 MHz
Memory Speed 800 MHz 1000 MHz
Power (Max TDP) 47 watts 50 watts
Bandwidth 12800 MB/sec 16000 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 DDR2 DDR2
Bus Width 128-bit 128-bit
Fab Process 80 nm 65 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 maximum amount of information (in units of MB per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better 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 texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video 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 maximum amount of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 8600 GT 256MB DDR2

Amazon.com

Check prices at:

GeForce 9500 GT DDR2

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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