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crappy psu?

C

-ChEM-

Weaksauce
Joined
Jun 25, 2004
Messages
110
im trying to clock an athlon jiuhb 1800+ tbred and im stuck at about 192fsb

for the most part its capable of going higher, ive got it to 230 before but i get weird shit going on in prime that i dont know what to make of:

if i set the cpu speed too high for the vcore i get the usual miscalculation errors coming up and it can be turned down and runs fine, this keeps going up and up and ive got it to 2.2ghz maybe 2.3ghz without it giving any miscalculations but when i get that high it keeps crashing and restarting, and when i check prime logs there havent been any errors before it crashes, temps are reasonable (thermalright 900a & panaflo L 92mm)

so i can turn it down a bit and when its in the sweet spot i get prime telling me:
Possible hardware failure, consult readme.txt file, restarting test.
ERROR: ILLEGAL SUMOUT
and after the set number of these the test stops... and the computer does dodgy shit like slowing down and not posting when you reset it once its been on for a while

the key thing seems to be when i play around with voltages, obviously with everything above i have been playing with the vcore but then if i also try vdd (chipset voltage which i need to get 200+ fsb) and vdimm (dont seem to need this, but still) the problem is far worse, i get the weird prime error and same problems but at lower speeds (or vcore)

so im guessing this has nothing to do with cpu instability, its just that something is lightweight and cant handle higher voltages going in... my hardware isnt great but surely i should be able to increase the vdimm by one step when everything else is at stock without it gaying up?

epox 8rda3+ rev1.1 (dodgy rev yes but it will go to 230fsb for a while so i dont think ive got a duff one)
crucial ddr400 cas2.5 (i get these problems at 200fsb or even lower when its set at 3-6-6-11 so i dont see how its the ram)

which leaves:
levicom 550xpe-p psu
which is a bitch because im sure hardly anyone will have heard of them on here, from what i can find out they are only properly shipped in germany and a few of them around the rest of europe... but i read a couple of reviews and it seemed to compare to a 550w antec they had with it... ive bought a new psu before when i didnt need it and just ended up selling it for half of what i paid bc it sounded like a jet engine so im hoping someone here will recognise the symptoms and tell me if its the mobo or psu so i dont end up on a spending spree

sorry for the length

DISCLAIMER: IF YOU HAVE NOTHING TO SAY EXCEPT "IVE NEVER HEARD OF THAT PSU IT MIGHT SUCK ASS" PLEASE REFRAIN FROM DOING SO AS I ALWAYS PRAY THAT PEOPLE WHO BUMP UP THEIR POST COUNT FOR THE SAKE OF IT ON MY THREADS ARE CASTRATED BY A GOD-GIVEN ACCIDENT... this does not apply to anyone who knows at least something even if it doesnt help
 
From the rules

(7) No CUSSING in the thread title. It is permitted in the thread body, but please refrain from using excessive profanity dammit.

On topic, maybe your CPU or mobo just can't do 192fsb. One sure way to find out if it is the psu is to try another one, either go buy a new one or borrow one from a friend.
 
Are you seeing a lot of fluctuations in your voltages? On my Abit all of my voltages fluctuated a bit , especially as the volts got raised but the Vcore in particular was a problem.

On my 2600M & NF7-S I had a voltage problem where when set to 1.95V on the core it would fluctuate from 1.855 to 1.935 and never hit 1.95 This caused some instabilitys. I ended up putting passive coolers on all my mosfets and voltage controllers and the voltages stabilized at 1.92-1.945. Never got up to the set 1.95V but was stable enought to up my OC a bit more. A move up from my Raidmax 350 W PSU to a Enermax 480W coolergiant just recently helped too.
 
I still wouldnt rule out the Memory... if the PSU is essentially straight, then your looking at a few other things then.

do you have a friend that has a board that can run as high as you want and could check your processor and or Ram on there ?

Are you cooling your northbridge and southbridge ? I atleast put a tallish HS on my southbridges.

You could also be just at the end of the line with your processor.
 
does the PSU label tell you how many amps it is giving the +12v line? low amps would = not giving the CPU enough juice, or possibly not giving your mobo enough juive at any given time, so you might wanna check that out

on anohter note, if you need a vdd to get to 200fsb, its possible that your NB just cant take it
 
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