prescott 550 with a p5wd2-e

turboshed · 20 Mar 2006 at 11:07

hi

i have been trying to overclock my prescott 550 (non J). With the cpu unlocked and the multiplier put back to 14 but i can only go up to 295 fsb, when i put it to 296fsb the system hangs then shuts down. The same happens when the cpu is locked, i can go to 245fsb but when i put it to 256fsb the system hangs then shuts down.

Can any one please give me some help/tips

my spec is not great but is as follows

CPU: 550 prescott
Motherboard: Asus p5wd2-E
CPU cooler: Coolmaster AQUAGATE Mini R80
RAM: Corsair CM2X512-5400C4
GPU: Ati x600
PSU: Qtek 400w

thanks
jamie

babyface uk · 20 Mar 2006 at 12:19

Could be your mobo is maxed out 296 fsb is not bad, but I see you use a Qtec psu, they are not known for there quality, a better psu may help you overclock some more.

Babyface UK

PS where did you get that chip from as P4's are not normaly multiplier unlocked.

turboshed · 20 Mar 2006 at 12:22

ok thanks, i am looking at getting a nice beefie PSU (one that will be ok with xfire). With some of the high-er end motherboards now you can unlock the mutliplier on the CPU, so it's not just my chip

thanks
jamie

Raikiri · 20 Mar 2006 at 12:27

Theres are actually two Q-tecs (ones Q-Technology) so the PSU may be fine.

If it is one of the cheap gold kinds change before it blows up

What temps are you getting?
what devider are you using on the memory(use 1:1)?
have you increased the northbridge voltage at all?
have you increased the cpu voltaage at all?

Although it most likely limited to ~300fsb which still isnt bad, just use stock multiplyer and clock it high as you can or drop the multi to 15x and try 275 fsb for 4.125ghz

AWPC · 20 Mar 2006 at 15:09

I have the same mobo. It does 1.2Ghz FSB easily even with Corsair Value Select DDR2-533 Ram.

The mobo is rated for a 1.6Ghz FSB so either your PSU, CPU or both are holding you back.

Not the Ram as its good to go for a 1.3Ghz FSB.

400W PSU is probably not a good idea with the 5 Series CPUs as they are the worst Prescott of the lot for power consumption.

Try to get a stronger PSU.

turboshed · 20 Mar 2006 at 17:55

Raikiri said:
Theres are actually two Q-tecs (ones Q-Technology) so the PSU may be fine.

If it is one of the cheap gold kinds change before it blows up

What temps are you getting?
what devider are you using on the memory(use 1:1)?
have you increased the northbridge voltage at all?
have you increased the cpu voltaage at all?

Although it most likely limited to ~300fsb which still isnt bad, just use stock multiplyer and clock it high as you can or drop the multi to 15x and try 275 fsb for 4.125ghz

yer it's one of the cheap ones

my temps now are system 26c and cpu is about 58
i am using a 3.4 didvider
i have the voltages on auto

turboshed · 20 Mar 2006 at 17:56

AWPC said:
I have the same mobo. It does 1.2Ghz FSB easily even with Corsair Value Select DDR2-533 Ram.

The mobo is rated for a 1.6Ghz FSB so either your PSU, CPU or both are holding you back.

Not the Ram as its good to go for a 1.3Ghz FSB.

400W PSU is probably not a good idea with the 5 Series CPUs as they are the worst Prescott of the lot for power consumption.

Try to get a stronger PSU.

can you recommend a PSU for use with a dual ( going to get one soon) and crossfire ( i dont have yet but will do soon hopefully)

thanks

Raikiri · 20 Mar 2006 at 18:09

600w seasonic, don't be cheap when it comes to a new PSU

AWPC · 20 Mar 2006 at 19:10

turboshed said:
can you recommend a PSU for use with a dual ( going to get one soon) and crossfire ( i dont have yet but will do soon hopefully)

thanks

Always get the best money can. A cheap one can fail and destroy your cpu+mobo+ram+hds. Rare but it does happen.

I use an Antec Phantom500 which is a totally silent 500W ATX2.0 PSU. Not cheap last year @ £127+P&P but very strong and silent as it only contains 1 x 60mm fan which is silent even on full RPM.