On Tuesday 17 August 2010 10:27 PM, Thomas Cameron wrote: > Say, hypothetically, I have 8 identical Intel DG45ID motherboard-based > system with 8GB memory and a single drive with a cheap-o generic 300w > power supply. That is seriously overloaded I would say! Every motherboard should draw about 40~60W depending on the CPU and RAM you have on each of them! In the past I have damaged hard drives by stressing the PSU. (I had too many drives on one cable) To keep stress on the PSU low, hardware review sites like Anandtech recommend running at the 60~80% mark of a PSU's power rating. That is the most efficient region for most PSU makes. I would recommend you to look at the ampere and voltage ratings for all the components you have, and calculate the needed power for the components. Power needed (W) = Ampere rating (A) x voltage rating (V) Also it is very important to not overload any of the particular rails. e.g. If one of the 12V rails for your PSU is rated at 120W then take care to put components such that the ampere ratings of all of them add up to 10A. (120W/12V = 10A) Hope this helps. -- Suvayu Open source is the future. It sets us free. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines