I'd change some of those values - Manufacturer's sites show specs for CPU's at 100watts up to 150watts, and 7200rpm 200Gb drives at 20 to 27 watts peak usage, also video cards have got much more complex, capable and power-hungry many using 512Mb memory (quoted at 20watts per 256Mb) and processors that need substantial cooling fans. and most motherboards are now supplying (transmitting) power to USB devices
It's near peak usage that gets poorly smoothed power supplies and causes disks to be miswritten (goodbye allocation table - or whatever) and it's the peak usage that blows the PSU and MOBO. JimB ----- Original Message ----- From: "Marc Sims" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, January 28, 2006 12:28 AM Subject: Re: MB, CPU, RAM, PS choice > To help determine your PSU power needs here's a Power consumption > guide from Maximum PC June 2004 issue. Sorry but the issues archive > on the website only goes back as far as 2005. > > http://www.maximumpc.com/ > > Component Power requirement lines used > Older CPU 20 - 40 watts +3.3v > Athlon XP, 64 or P4 60 - 90 watts +12v > Motherboard 20 - 30 watts +3.3v, +5v, +12v > Ram 20 watts per 256MB +3.3v > PCI cards 5 - 10 watts +5v > AGP video 20 - 50 watts +5v, +12v > CPU case fan 2 - 4 watts +12v > 5'400 rpm HD 5 - 10 watts +5v and +12v > 7,200 rpm HD 5 - 15 watts +5v and +12v > 10,000 rpm HD 5 - 20 watts +5v and +12v > Floppy drive 5 watts +5v and +12v > CD/DVD drive 10 - 20 watts +5v and +12v > Cold cathode lights 3 watts +12v > Led lights < 1 watt 12v or +5 v > > > -----Original Message----- > From: Windows Home/SOHO [mailto:[EMAIL PROTECTED] On Behalf Of > Hugh Gundersen > Sent: Friday, January 27, 2006 3:29 PM > To: [email protected] > Subject: Re: MB, CPU, RAM, PS choice > > On Fri, 27 Jan 2006 19:58:48 -0000, you wrote: > > >Naaa! > > > >Just wondering if your current PSU is up to the load, > >and thinking of the new dual videoboard idea. > > > >JimB > > > >----- Original Message ----- > What! @ 650Watt > > Sounds pretty OTT to me as I haven't seen any larger outputs recently. > > Sir Hugh of Bognor > > -- > ---------------------------------------- > To Change your email Address for this list, send the following message: > CHANGE WIN-HOME your_old_address your_new_address > to: [EMAIL PROTECTED] > Note carefully that both old and new addresses are required. > > > -- ---------------------------------------- WIN-HOME Archives: http://PEACH.EASE.LSOFT.COM/archives/WIN-HOME.html Contact the List Owner about anything: [EMAIL PROTECTED] Official Win-Home List Members Profiles Page http://www.besteffort.com/winhome/Profiles.html
