Power Supply Question for Intel 9550

uggitt

uggitt

uggitt

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22 Jun 2009
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I have the system below in my signature and I need to know what power supply people would recommend for my system. I would like to try and overclock my intel processor 9550, say to 3.3ghz or 3.4ghz. I have checked some sites for power consumption and it comes out around 350w to 400w. On this I am thinking of buying a CoolerMaster 460W eXtreme Power PSU. Any thoughts would be appreciated.

Also any help on overclocking this cpu on the gigabyte board would be appreciated

Thanks in advance.....
 
I would probably get something with a few more watts, just to allow yourself more headroom incase you want to add some more hardware in the future, like a graphics card, so something like This

Welcome to OcUK forum...
 
Coolermaster aren't a very respected psu brand relative to the market leaders. Id also vote for the corsair jbloggs has suggested, alternatively the ocz supplies are worth a look.
 
Hi, Thank you for your replies. At my local Store they have these on offer:

OCZ 500W StealthXStream PSU, PowerWhisper, Active PFC

Are they worth buying?

Regards


Mark
 
If its priced close to the one for sale here, then yes. One of my friends has been using one of those for a year or so with no complaints.

That's the one I'd chose myself, but corsair and be quiet get a lot of love around here.
 
Just a quick question with overclocking my chip.

I changed the fsb from 333 to 343 and the pc crashed. Do you think this is due to the poor power supply. It is a cheap 500w supply. I thought the 9550 cpu is easy to clock and am a bit worried it might not be the psu? Any thoughts. All bios settings are auto ect except fsb.

Mark
 
Whilst testing out the CPU OC you need to make sure the memory and other bus speeds dont go up with the cpu as they might fail at the higher speed.

You bios may have options to lock pci etc at standard speeds, if not your going to have to relax the memory and pci bus speeds etc to make some room for cpu overclocking.

Does that gigabyte board not support the gigabyte OC utility?
 
Overclocking on a cheap psu is a bad shout, if you overstress it and it breaks it'll kill other parts of your computer. It's not worth it at all. Wait for the ocz

It could well be the psu. It could also be your G41 motherboard. Your board will limit you before your chip does, though it is very unlikely to do so after 10 fsb.

^Not recommending software overclocking are you errata? Setting the pci-e frequency to 100 would be a very good idea
 
uggitt said:
Just a quick question with overclocking my chip.

I changed the fsb from 333 to 343 and the pc crashed. Do you think this is due to the poor power supply. It is a cheap 500w supply. I thought the 9550 cpu is easy to clock and am a bit worried it might not be the psu? Any thoughts. All bios settings are auto ect except fsb.

Mark
Click to expand...

Right im not extremely experienced myself but when i got my q9300 overclocked i had the same problem, the solution was to change the cpu:ram ratio, i found the best result to be 5:8, 1:1 doesnt work.

That being 440:705.

Once this is done you should be able to get 3.1+ without any voltage change.
 
I have got my power supply and tried to overclock the fsb by 5 and the system crashed. I did this via the bios and not sure why such a low increase would cause this. The memory speed does change from the standard 800mhz. Any advice would be most appreciated, regards, Mark
 
Is the system stable on stock settings, i.e. bios reset to defaults.
Does it pass memtest (ideally from cd/usb stick/floppy) and intel burntest?
If not we have fun times ahead. Unstable at stock means bad hardware, and this can be a nightmare (see link in my sig for a nasty example of this)

If it is stable, I'll give diagnostics a shot but may get names wrong as I use asus instead of gigabyte. Problem could be:
PCI-E frequency not manually set to 100
Ram voltage defaulting to 1.8, needs to be set to the number written on the ram

Motherboard 'auto' voltages being rubbish, set them all to the minimum number available except cpu voltage/cpu vcore, which should be set to it's vid=default vcore as determined by cpuid hardware monitor while computer is at stock settings.

You're running a bios which doesn't really know what to make of the q9550. If and only if the system is stable at stock then flash to the latest available bios, not from within windows. Use whatever bios utility gigabyte provide, and put the bios on floppy/usb stick/cd whichever is convenient and compatible with gigabyte.

Next guess is temperatures. I wouldn't expect it to be so sensitive as to crash at +5fsb, but temperatures may well cause you problems later on anyway. A photo of the inside of your case would help lots with this.

Also possible is that your windows install has had it, but this is about as likely as temperatures. Good luck
 
Thank you for the replies. I have ram prime stress test on normal setup and it ran for 2 hours and I stopped it. Temps never got over 50c. Is there any guides on setting the memory manually.

PCIE is set to AUTO, I will change this to 100 when I get home.

Thanks in advance, Mark
 
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