Could be the chipset, fan(s)/fan regulator(s), or something like that. Most
other motherboard components (PCI cards, memory, etc) use the +3.3 and
especially the +5.0 rails for everything else. Of course, PCIe cards can
suck down a lot of power directly from the +12v motherboard rail, without
the 6 pin SLI/PCIe connector.
Greg
----- Original Message -----
From: "Thane Sherrington (S)" <[EMAIL PROTECTED]>
To: "The Hardware List" <[email protected]>
Sent: Thursday, May 11, 2006 6:54 AM
Subject: Re: [H] Question on dual 12V rails
At 10:24 AM 10/05/2006, Greg Sevart wrote:
Typically, one +12v rail goes to the motherboard (ATX/SSI, 4pin +12, 8pin
+12), and the other rail covers everything else...including the standard
4pin molex, SATA power, and any SLI power connectors. Unfortunately, the
dual rail system was developed before SLI became a reality, and is a piss
poor design when SLI is considered.
But if the average motherboard only uses 0.4A on the 12V line, what else
is powered by the motherboard rail? Devices directly attached (USB, PCI,
AGP, mouse and keyboard?)
T
