Closed How many watts? AMD FreeBSD NAS w/ 8-12 hard drives Tags: Power Supplies NAS / RAID Components Last response: November 3, 2010 10:23 PM in Components Share thenerb November 1, 2010 6:17:00 PM What sort of a PSU (ATX) would I need for the following new build. It is a system that will be running as a NAS server probably using ZFS file system and FreeBSD or FreeNAS. AMD Athlon II x2 chip w/ 45w TDP Asus ATX Mobo w/ 2 PCI-e slots (will fill one or two of them with SATA controllers) I want the power capacity for 8-12 x 3.5 inch HDDs (probably 5400RPM) No optical drive, no graphics card, nothing fancy (except a handful of case fans including one 220mm fan). How many watts do I need? HDDs use both the 5V and 12V rails from the PSU, right? How many amps will I need on the 5V side and how many on the 12V side for this setup? It needs to be energy efficient since this server will be running 24/7. Here's one I am considering - SeaSonic SS-300ET (300W, 80+ Bronze): http://www.newegg.com/Product/Product.aspx?Item=N82E168... More about : watts amd freebsd nas hard drives | Report abuse Register or log in to remove Best solution rolli59 Power supply Master November 1, 2010 7:06:14 PM I get 308 watts recommended here http://extreme.outervision.com/PSUEngine that is 12 x SATA green and 2 x PCIe x4 cards. | Report abuse acer0169 Power supply Expert November 2, 2010 8:48:57 AM Following from what rolli59 has said, I would suggest going 100W over what you think you'll need. This gives you room to add more hardrives, optical drives or change your CPU for example without needing to worry about your PSU. | Report abuse christiangordon November 2, 2010 3:13:08 PM ^+1 | Report abuse thenerb November 3, 2010 1:07:38 PM Best answer selected by thenerb. | Report abuse Mousemonkey Power supply Expert November 3, 2010 10:23:56 PM This topic has been closed by Mousemonkey | Report abuse Register or log in to remove Ask the community Publish Tom's Hardware>Forum>Components>How many watts? AMD FreeBSD NAS w/ 8-12 hard drives> Related ressources: ForumNAS Setup with FreeBSD - Errors ForumFreeBSD NAS + ZFS multiple array setup for Home Server ForumBuild Q's on ZFS RAID-Z FreeNAS/ FreeBSD server ForumUnraid NAS : Hardware Checklist ForumBestConfigs - NAS PC ForumCheap Media NAS ForumSATA NAS:how to protect data against motherborad failure? ForumNAS Recomendations? ForumI need some NAS advice, Home Backup Solution ForumNeed Help with NAS rig ForumHome build NAS - low performance ForumHome Grown NAS solution ForumHow many watts do you think I need? ForumWanting to build a NAS /Server ForumHow many watts for a FreeNAS server w / 12 5400RPM HDDs? ForumPSU Help ForumAmd processor warranty check ForumHow to fix my cpu cd drive ForumIntel Core i7 950 VS AMD Phenom II X6 1090T ForumXen vs AMD Phenom II x6 More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !