overclocking old hardware

Perfect, i think i'm finally getting the hang of this........i think hahah.

Ok so i've just gone back in and increased the ram voltage to 2.1 just to get it out the way. Then changed the FSB to 410. Problem is im already showing a core speed of 3485MHz on CPU-Z. Thats over the 3400MHz threshold you told me to stay under.
 
Just lower the CPU multi to its lowest first. Really the idea is to work on one thing at a time otherwise it can be confusing having to change multiple clocks and voltages that depend on each other.
 
Ok :)
Unfortunately I'm off to work. Hopefully I'll get a full day at it again tomorrow. Fingers crossed I make some headway :)
 
JonSmith said:
You RAM is rated up to 1000 mhz at 2.1V!

Basically means you can set your FSB at 500 and the RAM will be fine. It is exceedingly unlikely you'll get the chip running at an effective 4250 MHz though, but it gives us plenty of room to play with. As an example if you now wanted to increase the FSB past this point you would first raise your RAM voltage to 2.1.

Next step I would say is to run a Prime95 blend test for 10 minutes and see if it passes. Past this point it's going to be about tweaking the other voltages and I have little experience with that.
Click to expand...

If the power stage on his board is upto it - and a fair chance it is with the P45 chipset then with watercooling hes got as good as any chance of hitting 4.25Gig stable on a Q9550 though the voltages would probably reduce its lifespan a bit but still probably way beyond anything useful now.

Mine was stable (well about as stable as you'd ever get) at 4GHz (after a hardware volt mod) on a horrid nForce chipset board and 100% stable on a P45 board at 4.5GHz with watercooling and a fair bit of voltage (nothing too silly) thrown at it - though it took more voltage on the nForce board to get 4GHz stable than it did 4.5GHz :S


EDIT: This would be something for someone with more experience of overclocking however.
 
Good morning all !
I'm ready to go again. I'll start off by lowering the CPU multiplier. How can I calculate what my lowest setting can be ? It doesn't give me a range in the bios.
Building these things is so much easier Hahahahaha
 
Perfect. That's dropped the clock speed down to 2460MHz

So is it just a case now of slowly upping the FSB till it becomes unstable ? Or do I have to move the other settings alongside that ?

Sorry I'm still being dense buddy. I really appreciate the help though.

Thanks again
Theo
 
Just keep raising the FSB and running a blend test til it becomes unstable, stop at 500. If it starts crashing we can look at raising the FSB termination and NB voltages to compensate.
 
JonSmith said:
Just keep raising the FSB and running a blend test til it becomes unstable, stop at 500. If it starts crashing we can look at raising the FSB termination and NB voltages to compensate.
Click to expand...

ok i've got it to 430.
Prime gave me an error in a couple of minutes.

[Thu May 29 09:57:01 2014]
FATAL ERROR: Rounding was 0.5, expected less than 0.4
Hardware failure detected, consult stress.txt file.
Click to expand...

Temps look ok i think under load, after about 10min at 100% they maxed out at 49oC (is that too high ?)
 
Done that now, mine would only let me set incraments of .02 so there at 1.26v

Prime ran for about 30min. Temp is the same. worker 3 stopped straight way with the same error but the rest kept passing till i stopped it. Is it normal for one to stop ? or should they all stop ?
 
Generally one will always fail before the others

Set VTT to 1.26 and PLL voltage to 1.56. Don't exceed 1.6V on the PLL if there is no option for 1.56V. If that doesn't prevent a core failure then raise NB voltage to 1.3V.

Also just to make sure, your RAM is still at 2.1V? Could you post the memory pages from CPU-Z again? (might be a secondary timings issue on the RAM).
 
Ok, I set the ppl to 1.56. I couldn't find an option for VVT so I left that. Booted back in and it blue screened.
So I reset the PPL to auto and it still blue screenes. It defiantly doesn't like something or other

Ram is still at 2.1. When I boot back in I'll get the print screens and type all my current settings :)
 
If it doesn't like that you might have to switch off and on with the power button rather than using the reset button.

I'll check the RAM timings etc. and most probably a bump to the NB voltage is needed.
 
here is what everything is at currently

Ai Overclock Tuner = Manual
CPU Ratio Setting = 06.0
FSB Frequency = 430
PCI-E Frequency = 100
FSB Strap to Northbridge = Auto
DRAM Frequency = DDR2-861MHz

DRAM Static Read Control = Auto
DRAM Read Training = Auto
Mem. OC Charger = Auto
AI clock twister = Auto

CPU Voltage = Auto
CPU GTL Reference (0/2) = Auto
CPU GTL Reference (1/3) = Auto
CPU PLL Voltage = Auto
FSB Termination Voltage = 1.26
DRAM Voltage = 2.1
NB Voltage = 1.26
NB GTL Reference = Auto
SB Voltage = Auto
PCI-E SATA Voltage = Auto

Loadline Calibration = Auto
CPU Spread Spectrum = Auto
PCIE Spread Spectrum = Auto
CPU Clock Skew = Auto
NB Clock Skew = Auto
CPU Margin Enhancement = Optimised

25be920171_zpsb69a72d4.jpg


w_zps4c296e25.jpg
 
Last edited:
You can turn spread spectrum options to disabled and load line calibration to on/high. Then set NB voltage to 1.3V and try prime again. The RAM settings look fine.
 
ok, i've done that. turned both
CPU Spread Spectrum = off
PCIE Spread Spectrum = off
Loadline Calibration = on.

i set the NB to 1.3. Prime failed almost instantly again. Could i of reached its max already ?
 
You could try dropping your RAM divider down a notch, see if that helps at all.

Otherwise turn speedstep off (if it isn't already) and start raising your CPU voltage a little.

AFAIK you shouldn't actually need to tweak the secondary voltage settings until you get close to 500. It might be that there's dust on your north bridge or inadequate airflow around the socket. You are water cooling so I can recommend sticking a fan that blows directly onto the socket area.
 
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