On 09/28/2013 03:23 PM, Stan Hoeppner wrote: > On 9/27/2013 6:37 PM, Joel Rees wrote: >> On Fri, Sep 27, 2013 at 9:36 PM, Stan Hoeppner <s...@hardwarefreak.com> >> wrote: >>> A point I forgot to make. This is something everyone should know. >>> >>> Subject: The marketing myth of multiple +12V rails >>> [...] >> >> What I want to know is why Intel CPUs still need the +12V. > > They don't now and they never did. The 8088 through 80486 and the first
/snip/ > > Installing two voltage regulators next to the CPU socket and using > standard ~22 gauge copper wires from the 12V rail of the PSU solves the > problem cheaply. The 12V rail was chosen because 3.6x less current is > required vs using the 3.3V rail as was used previously, which means much > smaller wires are needed. /snip/ Do I understand correctly that there are two switching power supply chips at the input to the CPU to produce 3.3Volts? Obviously, a linera regulator cannot produce and gain in current. Iin = Iout for linear regulators. --doug -- Blessed are the peacemakers..for they shall be shot at from both sides. --A.M.Greeley -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/52473996.2040...@optonline.net