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GeForce 8600 GS (OEM) vs Radeon HD 6790

Intro

The GeForce 8600 GS (OEM) uses a 80 nm design. nVidia has clocked the core speed at 540 MHz. The DDR2 RAM works at a frequency of 400 MHz on this particular model. It features 32 SPUs along with 16 TAUs and 8 Rasterization Operator Units.

Compare those specifications to the Radeon HD 6790, which comes with GPU core speed of 840 MHz, and 1024 MB of GDDR5 RAM set to run at 1050 MHz through a 256-bit bus. It also is comprised of 800 Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GS (OEM) 47 Watts
Radeon HD 6790 150 Watts
Difference: 103 Watts (219%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6790 should theoretically be a lot superior to the GeForce 8600 GS (OEM) in general. (explain)

Radeon HD 6790 134400 MB/sec
GeForce 8600 GS (OEM) 12800 MB/sec
Difference: 121600 (950%)

Texel Rate

The Radeon HD 6790 should be a lot (approximately 289%) better at AF than the GeForce 8600 GS (OEM). (explain)

Radeon HD 6790 33600 Mtexels/sec
GeForce 8600 GS (OEM) 8640 Mtexels/sec
Difference: 24960 (289%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 6790 is superior to the GeForce 8600 GS (OEM), by a large margin. (explain)

Radeon HD 6790 13440 Mpixels/sec
GeForce 8600 GS (OEM) 4320 Mpixels/sec
Difference: 9120 (211%)

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 GS (OEM)

Amazon.com

Check prices at:

Radeon HD 6790

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 GS (OEM) Radeon HD 6790
Manufacturer nVidia AMD
Year April 2007 April 2011
Code Name G84 Barts LE
Memory 256 MB 1024 MB
Core Speed 540 MHz 840 MHz
Memory Speed 800 MHz 4200 MHz
Power (Max TDP) 47 watts 150 watts
Bandwidth 12800 MB/sec 134400 MB/sec
Texel Rate 8640 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 13440 Mpixels/sec
Unified Shaders 32 800
Texture Mapping Units 16 40
Render Output Units 8 16
Bus Type DDR2 GDDR5
Bus Width 128-bit 256-bit
Fab Process 80 nm 40 nm
Transistors 289 million 1700 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated 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 output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce 8600 GS (OEM)

Amazon.com

Check prices at:

Radeon HD 6790

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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