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GeForce 8600 GT 512MB GDDR3 vs GeForce 9500 GT 1GB GDDR3

Intro

The GeForce 8600 GT 512MB GDDR3 has clock speeds of 540 MHz on the GPU, and 700 MHz on the 512 MB of GDDR3 RAM. It features 32 SPUs as well as 16 Texture Address Units and 8 ROPs.

Compare that to the GeForce 9500 GT 1GB GDDR3, which has a clock frequency of 550 MHz and a GDDR3 memory speed of 800 MHz. It also uses a 128-bit memory bus, and uses a 55 nm design. It is comprised of 32 SPUs, 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 512MB GDDR3 47 Watts
GeForce 9500 GT 1GB GDDR3 50 Watts
Difference: 3 Watts (6%)

Memory Bandwidth

The GeForce 9500 GT 1GB GDDR3 should in theory be a little bit faster than the GeForce 8600 GT 512MB GDDR3 in general. (explain)

GeForce 9500 GT 1GB GDDR3 25600 MB/sec
GeForce 8600 GT 512MB GDDR3 22400 MB/sec
Difference: 3200 (14%)

Texel Rate

The GeForce 9500 GT 1GB GDDR3 will be a small bit (about 2%) better at texture filtering than the GeForce 8600 GT 512MB GDDR3. (explain)

GeForce 9500 GT 1GB GDDR3 8800 Mtexels/sec
GeForce 8600 GT 512MB GDDR3 8640 Mtexels/sec
Difference: 160 (2%)

Pixel Rate

The GeForce 9500 GT 1GB GDDR3 is a bit (more or less 2%) better at anti-aliasing than the GeForce 8600 GT 512MB GDDR3, and capable of handling higher resolutions more effectively. (explain)

GeForce 9500 GT 1GB 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 1GB 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 1GB GDDR3
Manufacturer nVidia nVidia
Year April 2007 July 2008
Code Name G84 G96b
Memory 512 MB 1024 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: Bandwidth is the max amount of data (measured in MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 8600 GT 512MB GDDR3

Amazon.com

Check prices at:

GeForce 9500 GT 1GB 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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