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GeForce 8600 GS (OEM) vs Radeon HD 4550 256MB

Intro

The GeForce 8600 GS (OEM) features a GPU clock speed of 540 MHz, and the 256 MB of DDR2 memory runs at 400 MHz through a 128-bit bus. It also is made up of 32 SPUs, 16 Texture Address Units, and 8 Raster Operation Units.

Compare that to the Radeon HD 4550 256MB, which makes use of a 55 nm design. AMD has set the core speed at 600 MHz. The DDR3 memory works at a frequency of 800 MHz on this model. It features 80(16x5) SPUs as well as 8 Texture Address Units and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 256MB 25 Watts
GeForce 8600 GS (OEM) 47 Watts
Difference: 22 Watts (88%)

Memory Bandwidth

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

Texel Rate

The GeForce 8600 GS (OEM) is much (more or less 80%) more effective at anisotropic filtering than the Radeon HD 4550 256MB. (explain)

GeForce 8600 GS (OEM) 8640 Mtexels/sec
Radeon HD 4550 256MB 4800 Mtexels/sec
Difference: 3840 (80%)

Pixel Rate

The GeForce 8600 GS (OEM) will be much (more or less 80%) faster with regards to full screen anti-aliasing than the Radeon HD 4550 256MB, and able to handle higher resolutions without losing too much performance. (explain)

GeForce 8600 GS (OEM) 4320 Mpixels/sec
Radeon HD 4550 256MB 2400 Mpixels/sec
Difference: 1920 (80%)

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 4550 256MB

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 4550 256MB
Manufacturer nVidia AMD
Year April 2007 Sep 30, 2008
Code Name G84 RV710
Memory 256 MB 256 MB
Core Speed 540 MHz 600 MHz
Memory Speed 800 MHz 1600 MHz
Power (Max TDP) 47 watts 25 watts
Bandwidth 12800 MB/sec 12800 MB/sec
Texel Rate 8640 Mtexels/sec 4800 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 2400 Mpixels/sec
Unified Shaders 32 80(16x5)
Texture Mapping Units 16 8
Render Output Units 8 4
Bus Type DDR2 DDR3
Bus Width 128-bit 64-bit
Fab Process 80 nm 55 nm
Transistors 289 million 242 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 8600 GS (OEM)

Amazon.com

Check prices at:

Radeon HD 4550 256MB

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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