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Radeon HD 4550 512MB vs Radeon HD 6970

Intro

The Radeon HD 4550 512MB features a core clock speed of 600 MHz and a GDDR3 memory frequency of 800 MHz. It also makes use of a 64-bit bus, and makes use of a 55 nm design. It features 80(16x5) SPUs, 8 TAUs, and 4 ROPs.

Compare that to the Radeon HD 6970, which makes use of a 40 nm design. AMD has set the core speed at 880 MHz. The GDDR5 memory is set to run at a frequency of 1375 MHz on this particular model. It features 1536 SPUs as well as 96 Texture Address Units and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4550 512MB 25 Watts
Radeon HD 6970 250 Watts
Difference: 225 Watts (900%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6970 should in theory be much better than the Radeon HD 4550 512MB overall. (explain)

Radeon HD 6970 176000 MB/sec
Radeon HD 4550 512MB 12800 MB/sec
Difference: 163200 (1275%)

Texel Rate

The Radeon HD 6970 will be quite a bit (more or less 1660%) better at anisotropic filtering than the Radeon HD 4550 512MB. (explain)

Radeon HD 6970 84480 Mtexels/sec
Radeon HD 4550 512MB 4800 Mtexels/sec
Difference: 79680 (1660%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 6970 is a better choice, and very much so. (explain)

Radeon HD 6970 28160 Mpixels/sec
Radeon HD 4550 512MB 2400 Mpixels/sec
Difference: 25760 (1073%)

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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Radeon HD 4550 512MB

Amazon.com

Check prices at:

Radeon HD 6970

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 Radeon HD 4550 512MB Radeon HD 6970
Manufacturer AMD AMD
Year Sep 30, 2008 December 2010
Code Name RV710 Cayman XT
Memory 512 MB 2048 MB
Core Speed 600 MHz 880 MHz
Memory Speed 1600 MHz 5500 MHz
Power (Max TDP) 25 watts 250 watts
Bandwidth 12800 MB/sec 176000 MB/sec
Texel Rate 4800 Mtexels/sec 84480 Mtexels/sec
Pixel Rate 2400 Mpixels/sec 28160 Mpixels/sec
Unified Shaders 80(16x5) 1536
Texture Mapping Units 8 96
Render Output Units 4 32
Bus Type GDDR3 GDDR5
Bus Width 64-bit 256-bit
Fab Process 55 nm 40 nm
Transistors 242 million 2640 million
Bus PCIe 2.0 x16 PCIe x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core 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 rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4550 512MB

Amazon.com

Check prices at:

Radeon HD 6970

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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