12 Volt Rail question

[Patch]

I got an Antec TPQ 1200 OC which allows you to adjust the 12V in a range of 11.8 to 12.6v. I got it mainly for the extra PCIE 8 pin cables, but ain't complaining about knobs to turn. :cool3:

What advantage is there to bumping the 12v up (or down)?

Most everything of import ultimately runs at far less voltage so I'm at a loss to see any benefit aside from a tiny bump in fan speeds......and since I run fans and pumps on a separate PSU I can't even justify that.

[Patch]

Heck, would it help voltage regulation to undervolt to 11.8?

[Hondacity]

power = current x voltage

same power...higher voltage = slight less current = slightly less ripple(negligible)

set it to 12.25 - 12.35 volts.

** some harddrives don't like 12.4v

[Hondacity]

voltage regulation of the antec tpq is above average...

@ 75% load its still above 12v.

check the review of that psu @

http://www.itocp.com/htmls/95/n-495-10.html

[Patch]

:thumbsup: Thanks Honda.

Just wanted a valid excuse to turn the dial.

Like this PSU a lot so far, but I wish it had an on/off switch. With hardware switches and CMOS clears, I'll have to unplug the darn thing a dozen times a day.

[ReverendMaynard]

I think after allot of use and the 12v starts to droop a bit would be great to be able to dial it back up to 12v. I wouldn't go over or under 12v personally.

[Splave]

I would say if you notice sag in the 12v under load from the 980x I would tune it up a bit maybe?

[ReverendMaynard]

I would say if you notice sag in the 12v under load from the 980x I would tune it up a bit maybe?

exactly brotha.

[Hondacity]

I think after allot of use and the 12v starts to droop a bit would be great to be able to dial it back up to 12v. I wouldn't go over or under 12v personally.

working with powersupplies and amplifiers

a higher input voltage than what is specified always makes psus/amps output better. the (output) load being the mobo/vc have voltage regulators that just feeds the cpu/gpu. if you feed (vregs) right. it will perform alittle better.

[Hondacity]

I would say if you notice sag in the 12v under load from the 980x I would tune it up a bit maybe?

adjust at idle not at load....

when you adjust at load....say 12.2 volts...and when it becomes idle the 12v rail shoots to 12.6v...you prolly fried something...but really 12.6v is max atx number so its ummm safe? i know some components max at @ 12.4v.

[Jor-El]

I've always benched around 12.45v.

[ReverendMaynard]

no need to go above 12v.

[Chuchnit]

I asked this once and raja's answer went way over my head like everything he says, lol. Won't you just be creating extra heat at the pwm area of the mobo/gfx; etc? If the juice can't be used it has no choice but being wasted as heat.

[Jor-El]

Yeah I know but is something that I've been doing since my DFI NF2 toaster, old habits and believes are hard to die.

[Hondacity]

I asked this once and raja's answer went way over my head like everything he says, lol. Won't you just be creating extra heat at the pwm area of the mobo/gfx; etc? If the juice can't be used it has no choice but being wasted as heat.

you won't be creating extra heat...

at idle cpu's can throttle down... even gpu's throttle down...

at load you'll want a higher potential(voltage)

about the extra juice being wasted.......its the current that becomes heat...if the load doesn't require much current then there isnt much heat at all...


voltage

Voltage is the potential energy of an electrical supply stored in the form of an electrical charge, and the greater the voltage the greater is its ability to produce an electrical current flowing through a given circuit.

link http://www.electronics-tutorials.ws/dccircuits/dcp_1.html