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

Intro

The GeForce 8600 GT 1GB GDDR3 uses a 80 nm design. nVidia has clocked the core frequency at 540 MHz. The GDDR3 memory runs at a speed of 700 MHz on this card. It features 32 SPUs as well as 16 TAUs and 8 ROPs.

Compare all of that to the GeForce 9500 GT 1GB GDDR3, which makes use of a 55 nm design. nVidia has set the core speed at 550 MHz. The GDDR3 RAM runs at a speed of 800 MHz on this specific card. It features 32 SPUs as well as 16 Texture Address Units and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 1GB GDDR3 47 Watts
GeForce 9500 GT 1GB GDDR3 50 Watts
Difference: 3 Watts (6%)

Memory Bandwidth

In theory, the GeForce 9500 GT 1GB GDDR3 should be 14% faster than the GeForce 8600 GT 1GB GDDR3 overall, because of its higher bandwidth. (explain)

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

Texel Rate

The GeForce 9500 GT 1GB GDDR3 is a small bit (approximately 2%) more effective at texture filtering than the GeForce 8600 GT 1GB GDDR3. (explain)

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

Pixel Rate

The GeForce 9500 GT 1GB GDDR3 should be a little bit (about 2%) better at FSAA than the GeForce 8600 GT 1GB GDDR3, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce 9500 GT 1GB GDDR3 4400 Mpixels/sec
GeForce 8600 GT 1GB 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 1GB GDDR3

Amazon.com

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GeForce 9500 GT 1GB GDDR3

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 1GB GDDR3 GeForce 9500 GT 1GB GDDR3
Manufacturer nVidia nVidia
Year April 2007 July 2008
Code Name G84 G96b
Memory 1024 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 largest amount of data (counted in megabytes per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If 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 high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units 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 also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce 8600 GT 1GB 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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