Q6600 help clocking over 3ghz

good stuff. now i have lowered the tjmax to 90c my temps are down to 23c idle and about 70 load. does this sound more correct?
 
Here are my bios settings

[email protected] (9 x 356)
Multiplier is on 2.40B (333mhz)
North Bridge 1.8V
1.512500Vcore in bios
1.424V cpuz on load
OCZ Platinum 4x1gb 5-5-5-15 2.0v in bios

Diggsy, do you want the new bios settings? I have them at

1.8MCH (northbridge i think)

6600 is GO. I have have an H50 installed

Before with Scythe Was
36-40c idle
81-83c load

Now
39-42 idle
67-69 load

I have tried to clock it higher, to 3.3ghz and 3.4ghz and get errors in prime. I think this is something to do with either memory settings or the north bridge possibly overheating. When its clocked higher it does even get to 65c before erroring, presumably this means its memory or something else?
 
Your MCH is way too high if you have it at 1.8!! Lower that to about 1.5 or less even for starters.

1 - Turn off virtualization.

2 - Increase CPU Termination to about 1.23 - 1.25v

3 - Change your Clock Ratio to 8x.

4 - Change CPU Host Frequency to 400

5 - Change your memory multiplier to D (400)

6 - Report back.

EDIT - forgot the CPU Host Frequency!! It's now added.

Once you have set all of this, check to see if memory is running at stock. The memory multiplier will probably need to be 2.0 for this.
 
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cheers Diggsy. Will test this tonight and report back

edit - someone on here advised me to set it to 1.85, so i did
 
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Guest2 said:
cheers Diggsy. Will test this tonight and report back
Click to expand...

No worries. Will reply when I can.

Just watch that MCH setting. 1.8v is way way too high. DO NOT run it at that voltage again as you could damage the board. 1.5-1.6 without advanced cooling on the Northbridge is about its limit.

If you can get a little fan over the Northbridge then all the better as it will help to keep temps down when running Prime.

Try my settings anyway and if they work great, if not then no drama, just back to the drawing board and plan B, which will be to get your RAM running at less than stock (333 maybe) on a divider to take it out of the equation.

We also want to try and get your CPU volts as low as possible, so once you get stable, you need to drop this a little and test until it fails, then raise it 1 notch and leave it.
 
Diggsy, i tested those settings and all is good. Low of 33c and highs of 66c.

I had MCH on 1.28 before not 1.8! I put it up to 1.5.

What should i try from here do you think?

Ta
 
Hey mate, sorry for taking so long to respond. Thats great news, we're making progress.

Next is see how far you can push your chip. Can you increase the Clock Ratio in halfs? If so, give 8.5x a shot.

You should now be running at 3.4ghz (8.5 x 400).

If it boots, run the usual tests - Prime95 and SuperPi.

Report back

EDIT - just noticed your CPU has a VID of 1.325 which is on the high side and might prevent a very high overclock, but we'll give it a go and see what happens first.

At least you now seem to have the temps under control.
 
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Okay, so then either you want to go straight for the jugular and try 9x 400 (for 3.6ghz) or do it the right way and increase gradually by changing the multi to 9x and reduce the Clock Frequency to 380 (9x 380 = 3420mhz).

See if it boots. If so, test as before. If it's stable, try 9x 390. Keep going until it fails.

If it doesn't boot, try 9x 370.

Don't increase any voltages for now at least. I think you have the CPU voltage about as high as I would like to run it. So we need to find the ceiling at these settings.
 
I tried 9 x 380 and prime 95 failed after about 10 seconds, temps only went to 60c max. (and i have tj max at 100) CPUZ is showing 1.424 volts when on load. Does it need more maybe?
 
It might need a little more, but I wouldn't suggest much more, as you are using about as much voltage through the CPU that you would want to use.

It could simply be another voltage setting is holding it back. List all of your current voltage settings now so I can see if anything stands out.

It could also be the 4 sticks of RAM. If you want to rule that out, remove 2 sticks and see what happens.

Report back and we'll go from there.
 
Here are all the voltages. Ill try taking 2 sticks out tomorrow -

CPU Vcore - 1.51250
CPU Termination - 1.240
CPU PLL - 1.56
CPU Reference - Auto
CPU Reference 2 - Auto

MCH Core - 1.460
MCH Reference - Auto
MCH/DRAM Reference - Auto
ICH I/O - Auto
ICH Core - Auto

DRAM Voltage - 2.100
DRAM Termination - Auto
Channel A Reference - Auto
Channel B Reference - Auto

Cheers
 
Okay, lets try the following...

CPU Vcore - 1.51250
CPU Termination - 1.26
CPU PLL - 1.6
CPU Reference - Auto
CPU Reference 2 - Auto

MCH Core - 1.3
MCH Reference - Auto
MCH/DRAM Reference - Auto
ICH I/O - Auto
ICH Core - Auto

DRAM Voltage - 2.100 - what RAM are you running? Can we lower this a little to 2.0 maybe?
DRAM Termination - Auto
Channel A Reference - Auto
Channel B Reference - Auto

I think its just a matter of tinkering with the voltages until we stumble across the right setting. It might even need some of the votages lowered, hence the changes.

Give that a go on 8x 400 for 3.2 and then 9x 380, and with a little bit of luck 9x 400, although to get the 9x 400 the CPU might need a TINY bit more voltage.

EDIT - oh, give me a run down of your load temps too. Whats the CPU temps and Northbridge temps like?

EDIT2 - if it craps out at 3.2 with these settings then increase the MCH Core a little bit again.

Report back when done :)
 
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RAM is OCZ platinum (4 x 1GB) rated at [email protected]

Load temps are around 63c at the moment. On the Scythe I had before I went as high as 89 once at 3.2 (oops, was fine though, i think because Tjmax set at 100)

Northbridge I am now sure, where would i find out?

Will try with those settings tonight (before taking out RAM) Ta
 
Hi, been on holiday a few days...

Tried those settings and they work fine. 380 x 9 crashes in prime after a minute or so. 9 x 400 crashes after a second or 2 then a blue screen came up. I tried increasing the MCH a bit and that didnt work. I then took out 2 sticks of memory and that didnt work either

I have bought some PC8500 memory so i'll see how I get on with it. 533 x 6 = 3.2ghz as default i take it, then go from there
 
Guest2 said:
Hi, been on holiday a few days...

Tried those settings and they work fine. 380 x 9 crashes in prime after a minute or so. 9 x 400 crashes after a second or 2 then a blue screen came up. I tried increasing the MCH a bit and that didnt work. I then took out 2 sticks of memory and that didnt work either

I have bought some PC8500 memory so i'll see how I get on with it. 533 x 6 = 3.2ghz as default i take it, then go from there
Click to expand...

Hey mate! Yeah noticed you got a little holiday :p

Anyway, the 6400 would've been fine, but so long as you now have 2 sticks, then all will be good.

If Prime failed after a minute or so, then chances are it just needs a little bit more vcore.

Lets try the following settings at 9x 378...

CPU Vcore - 1.525
CPU Termination - 1.29
CPU PLL - 1.6
CPU Reference - Auto
CPU Reference 2 - Auto

MCH Core - 1.325
MCH Reference - Auto
MCH/DRAM Reference - Auto
ICH I/O - Auto
ICH Core - Auto

DRAM Voltage - 2.0
DRAM Termination - Auto
Channel A Reference - Auto
Channel B Reference - Auto

Remember to keep an eye on the temps, and if you can, grab HW Monitor (free) and watch the vdroop during load. See if its dropping more than before. I need to know exactly what it is dropping to so I can compensate accordingly.
 
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