Sudden stability issues with q6600.

Katoom · 26 Aug 2007 at 20:15

Upgraded my system about two weeks ago with a q6600, ga-p35c-ds3r and 2g of geil ram.

Was prime stable @ 3ghz with stock v core and 8hrs stable @3.2 with 1.437v.
Backed it down to 3ghz and was running fine until two days ago, just on the net when i get a blue screen flash and a reboot.
I ran a blend test and locked up straight away.
Put everything back to stock, failed again.

Running it now @2.4 with 1.35v core, cpu-z shows 1.28 but sometimes dips to 1.05 for a split second.
I've upped the v core, ram v, mch v and the fsb v, same thing.

I've tried 1 stick of ram and run memtest for hours with no errors.

Could it be my PSU?

The rest of my spec is;
Hyper 580w (i know about some of the bad rep on the forum), this has been solid with my DFI, 3800x2 @2.4 for over 2yrs.
Tuniq tower (temps hit 70 @3.2 but was still stable)
x800 gto2
2x hdd's
1 dvd
tv card.
Happened with vista 32 and a clean install of vista 64.

Any ideas?

Also, i plugged in a third hdd and it started to spin down on its own.

If it is the psu, will the Corsair HX 520W be ok with my system and say a 8800 card?

Thanks.

Katoom · 27 Aug 2007 at 19:54

Anybody?

Garyj881 · 27 Aug 2007 at 20:01

With your temps hitting 70 i would try removing thje cooler and re-seating it with fresh paste.

Check bios to make sure everything is set correctly, ie voltages for the memory, divider settings etc .

Whats your temps idle?

Edit:

Just noticed you have Geil ram, what voltage have you got it set to?

Justintime · 27 Aug 2007 at 20:19

Well you know about the Hiper..

Quads a different kettle of fish when it comes to power demand and load than your previous A64, so would look there at the Hiper first.

Katoom · 27 Aug 2007 at 20:20

My temps hit 70 under load @3.2 with 1.32v (1.431 in bios) but it was still stable, now it fails at stock speeds.

Idle temps were 40-44, i've tried the ram @1.8 + 1.9, same thing.

Passes memtest for hours.

Garyj881 · 28 Aug 2007 at 00:56

Katoom said:
My temps hit 70 under load @3.2 with 1.32v (1.431 in bios) but it was still stable, now it fails at stock speeds.

Idle temps were 40-44, i've tried the ram @1.8 + 1.9, same thing.

Passes memtest for hours.

That might be your problem, if its THIS RAM then set it to 2.1V.

Katoom · 28 Aug 2007 at 01:03

No it isn't, it's the cheaper 5,5,5,15 1.8 - 1.9v ram.

Thanks for the reply, i think i will order a new psu.

Just buggin me now, 2 weeks running fine, now fails blend test at stock.

Berserker · 28 Aug 2007 at 01:10

Upping the Vcore on these chips can dramatically increase the temperature (I noted 10C for less than 0.1V increase with an E6600) and if you have temperature issues already that won't be good.

Core2Duo/Core2Quad CPUs naturally undervolt at idle anyway (part of the power saving) so it could be that you're seeing with the low voltage, but then again it could be the PSU.