I using Enermax Galaxy DXX 850W cost a bomb RM990, bought direct from Vertex Penang. Not much choices, have got Enermax.

im using ggbyte odin pro 550wt...
theres once or twice my pc automatically shutdown when i play game..i suspected that my vcore pumped when oc is not enuf,,,can this be the reason of a bad psu?
coz i bought this one according to review...it was good

This post has been edited by alive88: Dec 2 2007, 09:29 AM

Maybe your overclock is not stable and you might need more Vcore.
Other reason is maybe it's too hot. I don't think it's a PSU issue.

Noticed most people here only look at power rating on 12V. That is how much juice you get from the 12V rail. Whether it is single or multiple 12V rails. But don't understand why nowdays people never look at the other like 5V, 3.3V and most important and overlooked 5VSB.

I had a server 460Watts True Power PSU by NMB, cannot even start my DFI infinity Dark P965-s. But once couple with Gigabyte, Asus, or Biostar with Q6600, no problems. All rails shows +/- 1% variation, which is what I am look for. When I couple with DFI, even it fails to start but the voltage reading from all rail including 5Vsb, 12V, 5v and 3.3V rail read perfect on my Digital multimeter (Fluke 87). Noticed this psu only has 2A 5Vsb rail.

I think most enermax PSU also show the same problem with DFI motherboard.

Therefore from now on, I will be looking at PSU with minimum 3A on 5Vsb rail. I think it is very important, because what the point with all those juice if the motherboard cannot even start. Don't you think so.

This post has been edited by chek: Dec 2 2007, 04:57 PM

Yeah, it can also be because of overheating. Forgot that procs will trip a safety shutdown when overheated..

3A vsb would be quite hard to find. I'm not sure if its because of the vsb, if the psu can turn on while the board is connected then its not likely to be because of the vsb. I've started a PC with a PSU with sufficient vsb (only 0.2A ) by jump starting the psu while connected to the board.

erm..
100% loading on ur PSU sure not good...
even if ur using 560Watt psu...
just 60w reserved...
like mine..
using enhance 460w, my pc will restart if OC my cpu and MY X1950GT..

my power rating in this calculation shows 446watt...

It depends. If the power supply is truly reliable, then even at its limit it will still mantain good voltage & ripple regulation even for long periods of time. The CM Realpower 550w that I use can handle a full 100% load for 24 hours with no problem, and even a 650W load for short durations. Is your Enhance 460w the one from 3431? Seem to be hearing that the voltage regulation is a bit weak on that PSU at the limit. But at least it doesn't blow up like those cap ayam/akucomel/power tak logik..

-extra
Some reviews of some screwed up cheap @$$ power supplies, just something for a bit of amusement reading. Especially like the comments on the 2nd one.
http://www.jonnyguru.com/review_details.php?id=134
http://www.jonnyguru.com/review_details.php?id=129

well ive tried stock settings (finnally got the time to meddle around the bios lol)

and it ACTUALLY RECOGNIZES MY CPU as 2.66ghz instead of lolwut 2.41 ghz.
but the dumb thing still says new cpu installed press f1 to run setup blah blah

havent tried out underclocked settings but i think it maybe the higher ampere ratings from single rail psu's? because back when i was using the TT TP750 thats quad railed, the problem never occur at all.

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Added on December 3, 2007, 7:01 amin ur list, ive already used the thermal take toughpower 750W, silverstone OP650W (not 1kw though lol) and now the PC P&C silencer 750, and amongst these 3, the PC P&C wins hands down lol... but i guess the cost of the PSU only makes it logical >.>

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Added on December 3, 2007, 9:54 amlol good review links man, and those arent even ur regular cap ayams, they're like special branded cap ayam, or w/e better cap ayams than our cap ayams... lol

This post has been edited by Quazacolt: Dec 3 2007, 09:54 AM

At stock it boots properly but only need to press F1 right (no hanging, no need to reset)? If that the case then it -might- be the PSU. But even then I suspect something else, possibly a motherboard voltage regulator not functioning as well as it should. If the voltage regulators are to blame, then you will have this problem using most processors on this board except for the lowest power ones.

Single rails are better than mutli railed PSUs for most purposes because you can't accidentally place an unbalanced load across the rails. But multi rail PSUs have their advantages too, a true multi rail PSU (which has completely seperate transformers and regulators for each rail) isolates voltage flutuations & EMI on each rail from other rails. Effectively two seperate PSUs in one, but designed to work together if necessary. Unfortunately, there are very few PSUs (even from highly reputable manufacturers) using a true multi rail design, most cheat and share regulators, and just place a current limiter on each rail, which has none of the advantages of a true multi rail. Hardwaresecrets does a good job of examining PSU circuits to determine how good a PSU is, though they lack the equipment to stress test the PSUs.

oh it hangs and still need to press reset, but it recongnizes the clock speed (2.66 over 2.41 lolwtf 2.41?)

speakin of the difference of multi rail and single rails, i still dont get why the multi rail didnt cause such issues where as BOTH single rails did. my only guesswork is the increased amperage for the motherboard/cpu voltage regulators to regulate?

Is it true the those PC Power & cooling silencer 750watt and below are actually OEM by SEASONIC, just like the CORSAIR HX series ?

yes its OEM'ed by seasonic

my current setup when i oc too much, it will be unstable and unable to boot, i suspect is insufficient power, here's my spec

PentiumD 805
msi 945 pl neo
galaxy 7900GS
2X1gb mushkin ddr2 800
seagate 160GB
sony dvd-rw
samsung writemaster dvd-rw
coolermaster extreme power 430W

if its really psu problem , any suggestion what should i upgrade to?

Netburst need more power and better cooler. Ur MSI 945 too... not very convincing.

I'm really stumped now..by right the multi rail should be giving the problem, not the single rail. There is NO increase in actual amperes going to the motherboard regardless of which PSU you use, the number on the PSU is just the absolute max. In reality it will only supply what is asked for at that particular time.

I'm really starting to think this is not a PSU problem..probably the mobo..

lol i should prolly try underclocking/undervolting sometime to test it out. if it finally make first boot without problems then it should be solely cpu/mobo problem and not the PSU. Just rather funny how not one but TWO high end PSUs are giving me this annoying minor problem where the lower end thermal take toughpower 750 never did. And their difference is the TT TP being quad railed where the OP650 and PC P&C 750 are single rails, and thats where i base my guess work on.

ill let you know if it actually work, and im assuming it would as running default clock/voltage allows my cpu to be correctly recognized on first boot instead of the dumb 2.41GHZ clock speed recognition on first boot.

i'm using Coolermaster True Power 450W (aka Acbel 450W) for 3 years already and still rocks. Past few months i upgraded my system from athlon k8 to c2d. I dint change my CM PSU and still using it for my c2d. My current system is rock stable @1.86GHz until when i tried to OC it above 2.7GHz. I suspected it might be power supply problem. And guess what, it is.

your mobo limit it? psu still going strong.

i wonder why my psu keep giving me probs..i saw in my cpu-z screenie, that when i set my vcore in bios to 1.375, in cpu-z in shows 1.376,then in a second, it change to 1.392,then change back to 1.376,keep on going like this..why?

It's normal Everyone has it I guess.