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GeForce 8600 GT 512MB DDR2 vs GeForce GT 130

Intro

The GeForce 8600 GT 512MB DDR2 uses a 80 nm design. nVidia has set the core frequency at 540 MHz. The DDR2 RAM works at a speed of 400 MHz on this card. It features 32 SPUs as well as 16 Texture Address Units and 8 ROPs.

Compare that to the GeForce GT 130, which has a clock frequency of 500 MHz and a DDR2 memory frequency of 250 MHz. It also makes use of a 192-bit memory bus, and makes use of a 55 nm design. It is made up of 48 SPUs, 24 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 512MB DDR2 47 Watts
GeForce GT 130 75 Watts
Difference: 28 Watts (60%)

Memory Bandwidth

In theory, the GeForce 8600 GT 512MB DDR2 will be 7% quicker than the GeForce GT 130 overall, due to its greater data rate. (explain)

GeForce 8600 GT 512MB DDR2 12800 MB/sec
GeForce GT 130 12000 MB/sec
Difference: 800 (7%)

Texel Rate

The GeForce GT 130 is a lot (approximately 39%) better at AF than the GeForce 8600 GT 512MB DDR2. (explain)

GeForce GT 130 12000 Mtexels/sec
GeForce 8600 GT 512MB DDR2 8640 Mtexels/sec
Difference: 3360 (39%)

Pixel Rate

The GeForce GT 130 should be much (approximately 85%) more effective at full screen anti-aliasing than the GeForce 8600 GT 512MB DDR2, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GT 130 8000 Mpixels/sec
GeForce 8600 GT 512MB DDR2 4320 Mpixels/sec
Difference: 3680 (85%)

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 GT 130

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 GT 130
Manufacturer nVidia nVidia
Year April 2007 March 10, 2009
Code Name G84 G94b
Memory 512 MB 768 MB
Core Speed 540 MHz 500 MHz
Memory Speed 800 MHz 500 MHz
Power (Max TDP) 47 watts 75 watts
Bandwidth 12800 MB/sec 12000 MB/sec
Texel Rate 8640 Mtexels/sec 12000 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 8000 Mpixels/sec
Unified Shaders 32 48
Texture Mapping Units 16 24
Render Output Units 8 16
Bus Type DDR2 DDR2
Bus Width 128-bit 192-bit
Fab Process 80 nm 55 nm
Transistors 289 million 505 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total texture units by the core 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce 8600 GT 512MB DDR2

Amazon.com

Check prices at:

GeForce GT 130

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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