***The Official Yorkfield Q9300/Q9450/Q9550 Overclocking Thread ***

[darkstroke]

never mind just bought them...

So are they good?

 

[z10m]

So are they good?

I don't have them yet but in that thread people are happy with them.
Also they can use 4x2GB sticks @1066MHz unlike some 8500 memory..

 

[Big.Wayne]

Guys are you clocking the memory 1:1 or using a divider?

 

[z10m]

Just checked with new memory and I'm still stuck on max 450fsb so it have to be my mobo.

 

[lltfdaniel]

On a p35-ds3l rev 2.0.

This board does not like anything higher.

I use a divider of 5:6 and the memory is Ocz Reaper Memory HPC Edition pc8500, and still if i try 3.7ghz even with a voltage increase to 1.35volts, it still would hang or not post.

 

[Cob]

Great voltage for 3.6ghz if it's stable.

 

[samhain]

I just received mine yesterday. Nothing overclocked at the moment. Could someone explain why CPU-Z says Core Speed 1999.9 and multiplier x 6

This seems to equate to 333 x 6. However, when I changed the FSB to 400 and the CPU setting to 08.5 the the AMI bios screen shows 3.41Ghz but in the bios it shows lower figures. Presumably if you have an inaccurate bios then CPU-Z just picks up those inaccuracies?

Even when I have had the ami bois showing 3.31 Ghz, the CPU Z still says multiplier of 6 even though I have changed the bios.

I thought the processor was 2.83Ghz at stock so I would expect to see those settings?

MB is P5Q SE

 

[Hesky82]

you have speedstep enabled (power saving option when the pc isnt under load)

disable C1E and manually set the multi, tbh if your not going for an extreme overclock there's really no harm leaving it enabled

 

[Arge]

Have browsed the thread but not found the info im after,

What should i set my vcore to to clock my q9450 to 3.2ghz ? just need a benchmark value that i can then reduce to find its lowest stable voltage.

On auto at standard clocks its showing 1.224v

 

[Shads]

Should do 3.2 on stock volts.
my q9450 only needs 1.25v for 3.6 chip

 

[Buckster]

wow 3.6 at 1.25 is very nice perhaps I should upgrade my Q6600

(1.55V for 3.55 gig lol -air)

 

[Shads]

yer but dont think thay all do that pot luck realy

 

[Greebo]

yer but dont think thay all do that pot luck realy

You would be surprised. My q9650 does 4ghz 12 hour prime stable at stock volts

 

[BIGBC]

Q9550 @ 3.5GHz @ 1.275
EVGA 750i SLI F. T. W.
4x1GB DDR2 1066MHz
9800GX2 SLI
(6 hour Prime + 8 hour IBT stable)

Not experienced enough to get 3.6GHz+ on this setup.

 

[WJA96]

You would be surprised. My q9650 does 4ghz 12 hour prime stable at stock volts

Is that [AUTO] on the motherboard or have you manually set the voltage to the VID shown in CPUz?

 

[Clairvoyant]

First Try



i do like the nice even temps across all cores.

 

[Greebo]

Is that [AUTO] on the motherboard or have you manually set the voltage to the VID shown in CPUz?

Sorry, only jut seen your question. Manually set.

 

[wolvers]

I've got the twin brother of Clairvoyant's chip! Not bad for a HTPC case

I've tried for 4ghz, which I'm sure this chip can do, but I can't get my P35 board to do 470fsb

 

[Clairvoyant]

Is 4Ghz worth bumping up the volts over 3.8Ghz

 

[wolvers]

I'd happily go to 1.30-1.35v but my board just doesn't seem to want to do it.