Need more power. Will OCZ 600W help?

[oozberg]

I have a XP-M rig, wich I used to run @ 3GHz 24/7 prime stable. But since I got my nvidia 6800 card, I had to drop my cpu speed down to 2.93GHz to get is stable:(

Have a look at my voltages: (Antec TruePower 550W) [Img attached]

+12v @ 11.5v IDLE :(, I dont even want to know what my loaf voltages is.

This is why I think I need a better psu.

Which psu would be the best choise for my rig? OCZ 600W?

The OCZ PowerStream 600W psu has adjustable voltages, so is it possible to boost the 12v rail(s) up to 12.x v, while running cpu @ 3Ghz+ (2.1v vcore) :confused: I miss my 3.0GHz 24/7 sooo much ;)

And if I buy this psu, can I use one 12v rail to my Leadtek 6800 NU AGP and one for the rest?

And also, wich rail actually powers the cpu? (No, I am not a noob :p:)

[Vincentvega18]

I dont think the cpu is run off any of the rails specifically, ie if you up one rail itll keep the vcore stable b/c of the mobo vrm's, maybe im a n00b though. :(

[B5I8]

The CPU is fed off the 12V rail. Those voltages are indeed pretty low. An OCZ PowerStream or a PC Power & Cooling PSU should make for much higher and stable voltages.

[CaTalyst.X]

CPU is fed off the 12V rail but even 10V will work because of the way the CPU vCore circuit works.

-CaT

[B5I8]

CPU is fed off the 12V rail but even 10V will work because of the way the CPU vCore circuit works.

-CaT
Actually no it won't work because the CPU is not the only thing running off the 12V rail.

[CaTalyst.X]

This thread is discussing whether the droop of his 12V rail is affecting his CPU OC, im talking about the CPU power, i dont care what else the +12V rail powers. The cpu can be powered off 10V which is what i said.

-CaT

[STEvil]

as long as the voltage drop and current required to make the voltage drop doesnt cause soemthing to catch fire.... :D

[|3ourne]

600W powerstream would be an overkill imho. Get the 520W .... u should be just fine with it . The 520W has 30+amps on its 12V rails ....... should be more than enough for your configs.

[CaTalyst.X]

I would agree with Bourne, i think its a lack of current, not a lack of wattage.

-CaT

[B5I8]

This thread is discussing whether the droop of his 12V rail is affecting his CPU OC, im talking about the CPU power, i dont care what else the +12V rail powers. The cpu can be powered off 10V which is what i said.

-CaT
Well a low 12V rail would indeed cause lower overclocks. The motherboard also uses the 12V rail along with the 3.3V and 5V, if any of these rails dipped too low it would cause instabilities.

I would agree with Bourne, i think its a lack of current, not a lack of wattage.

-CaT
Voltage times current equals watts so current and wattage go hand in hand.

[STEvil]

lack of voltage implies loss of current.

EDIT

or, to me more correct: lack of ability to supply amperage can cause voltage droop (in this case).

[$a1Ty]

have you checked with a DMM?

[oozberg]

I think I'll buy the 600W version anyway.

If/when I upgrade to A64/FX + NF4 I probably want a SLI system :D


And as I asked before. Can I use one 12v rail to supply my nv68 agp, and one to supply cpu, hhd and so on?

( So there isn't any weird thing like you only can use the second 12v rail to supply pci-express cards? )

[Jupiler]

I'm moving your thread to the General Hardware section, because it doesnt really belong in the xtreme overclocking section wich is for xtreme overclocks only.

Please post in the acccurate section the next time.
If you dont know what section to post in then please contact any of us mods and we will help you

[Xassius]

Well a low 12V rail would indeed cause lower overclocks. The motherboard also uses the 12V rail along with the 3.3V and 5V, if any of these rails dipped too low it would cause instabilities.

Voltage times current equals watts so current and wattage go hand in hand.

The 12v rail for the CPU can dip as low as it likes, as long as it keeps above like 3v and can supply the amps [which it can't].

12v at 12A = 144W = 3v x 48A

If you don't get it, read about switching regulators..etc


He refers to the Wattage of the Power supply, not specifically the 12v rail. We all know a 1200w PSU with 10A on the 12v line and 200A on the 3.3v line won't help things along.

So what he needs is not a a PSU rated above his 550w TrPw, but a psu with better amps on the 12v rails.

[CaTalyst.X]

Well a low 12V rail would indeed cause lower overclocks. The motherboard also uses the 12V rail along with the 3.3V and 5V, if any of these rails dipped too low it would cause instabilities.

Voltage times current equals watts so current and wattage go hand in hand.

Ohk...10V at higher amperage would work just fine as stated above. And It is a lack of current because the TP550 has 550W w/ only 24A on the +12V Rail.
V x I = W but the wattage rating is a total rating across all three rails. A PSU with more amperage on the +12V and +5V would help him more than just 600W.

-CaT

[Mcklain]

Just get a Pc power and cooling and all youre problems will go away!!

Mcklain