Uh...according to the article you quote - the answer is "yes"
> From: [EMAIL PROTECTED] > To: hardware@hardwaregroup.com > Date: Sat, 10 May 2008 09:40:22 -0700 > Subject: Re: [H] PC Power & Cooling S75QB 750W EPS12V Power Supply $149 free > shipping > > According to PC Power and Cooling, no. > > http://www.pcpower.com/technology/myths/#m8 > > ----- Begin of copy from PC Power and Cooling ----- > 8. ARE MULTIPLE 12-VOLT RAILS BETTER THAN A SINGLE 12-VOLT RAIL? > > With all the hype about multiple 12-volt rails (ads claim that two rails is > better than one, five is better than four, etc.), you'd think it was a > better design. Unfortunately, it's not! > > Here are the facts: A large, single 12-volt rail (without a 240VA limit) can > transfer 100% of the 12-volt output from the PSU to the computer, while a > multi-rail 12-volt design has distribution losses of up to 30% of the power > supply's rating. Those losses occur because power literally gets "trapped" > on under-utilized rails. For example, if the 12-volt rail that powers the > CPU is rated for 17 amps and the CPU only uses 7A, the remaining 10A is > unusable, since it is isolated from the rest of the system. > > Since the maximum current from any one 12-volt rail of a multiple-rail PSU > is limited to 20 amps (240VA / 12 volts = 20 amps), PCs with > high-performance components that draw over 20 amps from the same rail are > subject to over-current shutdowns. With power requirements for multiple > processors and graphics cards continuing to grow, the multiple-rail design, > with its 240VA limit per rail, is basically obsolete. > ----- End of copy from PC Power and Cooling ----- > > On the same page there is info on other myths on Power Supply. > > Tim "The Beave" Lider > E-mail: [EMAIL PROTECTED] > MSN: [EMAIL PROTECTED] > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of j maccraw > Sent: Thursday, May 08, 2008 8:26 PM > To: hardware@hardwaregroup.com > Subject: Re: [H] PC Power & Cooling S75QB 750W EPS12V Power Supply $149 free > shipping > > Is a single 60A 12V rail better than multiple 12V > rails totaling ~60A? Too bad the > Red version is not on sale also! > > Who makes the Silencer Quad for PCP&C? > > > Al wrote: >> > http://www.newegg.com/Product/Product.aspx?Item=N82E16817703009 > >> $149 free shipping >> >> > http://promotions.newegg.com/PS/041508/index.html?cm_sp=SubCat_PowerSupplies > -_-PS041508-_- >> >> >> Al >> >> > > > > ____________________________________________________________________________ > ________ > Be a better friend, newshound, and > know-it-all with Yahoo! Mobile. Try it now. > http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ > > _________________________________________________________________ Stay in touch when you're away with Windows Live Messenger. http://www.windowslive.com/messenger/overview.html?ocid=TXT_TAGLM_WL_Refresh_messenger_052008
