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Raid 5 support on MB chipsets

Forum Motherboards & Memory : General Motherboard - Raid 5 support on MB chipsets

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Hey folks, with more motherboards shipping with Raid 5 built in I'm wondering if anyone has tested them for CPU load? How much of the processing are these raid controllers doing in hardware and how much is being offloaded. Raid 5 is fairly processing intensive and this will obviously have an impact on system performance if most of the work is being done by the CPU. I'm guessing that mobos like the A8V-VM from ASUS are doing most of the heavy lifting in the CPU as the raid controller appears to be part of the southbridge (from what I can tell from the specs).

So, anyone out these tested this? I think this would be a good article for Tom's.

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Read this and this.

The Tech Report article has a really interesting conclusion about how with the chipsets, their RAID 5 write performance is really low, but CPU utilization is also low, suggesting there's a software limitation written into the drivers.

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