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Radeon HD 4550 512MB vs Radeon HD 6970

Intro

The Radeon HD 4550 512MB uses a 55 nm design. AMD has clocked the core speed at 600 MHz. The GDDR3 RAM runs at a frequency of 800 MHz on this particular model. It features 80(16x5) SPUs along with 8 TAUs and 4 Rasterization Operator Units.

Compare that to the Radeon HD 6970, which comes with core speeds of 880 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1536 SPUs as well as 96 TAUs 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

Theoretically speaking, the Radeon HD 6970 should be a lot faster than the Radeon HD 4550 512MB in general. (explain)

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

Texel Rate

The Radeon HD 6970 should be quite a bit (approximately 1660%) faster with regards to AF 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 using high levels of AA is important to you, then the Radeon HD 6970 is the winner, by a large margin. (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 data (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach 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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