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GeForce 8600 GS (OEM) vs Radeon HD 6450 (OEM)

Intro

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

Compare those specifications to the Radeon HD 6450 (OEM), which comes with GPU clock speed of 625 MHz, and 512 MB of GDDR3 RAM set to run at 800 MHz through a 64-bit bus. It also is made up of 160 Stream Processors, 8 TAUs, and 4 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 31 Watts
GeForce 8600 GS (OEM) 47 Watts
Difference: 16 Watts (52%)

Memory Bandwidth

Both cards have the exact same memory bandwidth, so theoretically they should perform exactly the same. (explain)

Texel Rate

The GeForce 8600 GS (OEM) should be a lot (more or less 73%) more effective at texture filtering than the Radeon HD 6450 (OEM). (explain)

GeForce 8600 GS (OEM) 8640 Mtexels/sec
Radeon HD 6450 (OEM) 5000 Mtexels/sec
Difference: 3640 (73%)

Pixel Rate

The GeForce 8600 GS (OEM) will be quite a bit (more or less 73%) faster with regards to FSAA than the Radeon HD 6450 (OEM), and should be able to handle higher resolutions without slowing down too much. (explain)

GeForce 8600 GS (OEM) 4320 Mpixels/sec
Radeon HD 6450 (OEM) 2500 Mpixels/sec
Difference: 1820 (73%)

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 6450 (OEM)

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 6450 (OEM)
Manufacturer nVidia AMD
Year April 2007 February 2011
Code Name G84 Caicos
Memory 256 MB 512 MB
Core Speed 540 MHz 625 MHz
Memory Speed 800 MHz 1600 MHz
Power (Max TDP) 47 watts 31 watts
Bandwidth 12800 MB/sec 12800 MB/sec
Texel Rate 8640 Mtexels/sec 5000 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 2500 Mpixels/sec
Unified Shaders 32 160
Texture Mapping Units 16 8
Render Output Units 8 4
Bus Type DDR2 GDDR3
Bus Width 128-bit 64-bit
Fab Process 80 nm 40 nm
Transistors 289 million 370 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 max amount of data (in units of megabytes per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 are processed per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, 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 maximum number of pixels the graphics card can 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 ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce 8600 GS (OEM)

Amazon.com

Check prices at:

Radeon HD 6450 (OEM)

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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