Q9550 Overclock, help please!

[ALECUBA]

hello everyone, ive gotten back into pushing the envelope with my cpu to see how far it can go.....i got it stable to 3.5GHz yesterday running IBT 10laps, then i stopped stressing for the night....here are my bios settings:

CPU clock ratio>>>>>>> >>>>>>>>>>8x

fine cpu clock ratio>>>>>>>>>>>>>>>+0.5

cpu host frequency>>>>>>>>>>>>>[412]

pci express frequency>>>>>>>>>>>100

C.I.A.2>>>>>>>>>>>>>>>>>>>>>>disabled

DRAM Performance Control

Performance enhance>>>>>>>>>>turbo

Extreme memory profile>>>>>>>>>auto

MCH FREQ LATCH>>>>>>>>>>>>auto

SYSTEM MEM MULTIPLIER>>>>>>>>2.00D

DRAM TIMING SELECTABLE>>>>>>>MANUAL 4 4 4 12

MOTHERBOARD VOLTAGE CONTROL

load line calibration>>>>>>>>>>>>>disabled

cpu core voltage>>>>>>>>>>>>>>>1.16250v

cpu termination>>>>>>>>>>>>>>>>1.20v

cpu pll>>>>>>>>>>>>>>>>>>>>>>>1.5v

cpu reference>>>>>>>>>>>>>>>>>>auto

mch core>>>>>>>>>>>>>>>>>>>>>1.100

mch reference>>>>>>>>>>>>>>>>>auto(0.760v)

mch/dram reference>>>>>>>>>>>>>auto(0.900v)

ich i/o>>>>>>>>>>>>>>>>>>>>>>>auto(1.500v)

ich core>>>>>>>>>>>>>>>>>>>>>>auto(1.100v)

dram voltage>>>>>>>>>>>>>>>>>>auto(1.800v)

Temperatures: using realtemp..

Idle: 32 33 36 34 Load: 62 62 61 62

I was impressed at how low the voltage for the core was, same as default for 2.83Ghz...if anyone knows about this board and sees any value i should change over to manual and how much, please tell me....i managed to get it to 3.8ghz but this time i had to increase the vcore by three notches, i never ran ibt 10laps yet so thats still to come....id like to know first how to lower everything else manually to have a fully stable 3.5ghz with minimal voltages....like, can i even undervolt the core compared to the default vcore? also whats cpu reference voltage? when i tried setting that one to the default value of 0.760v it wouldnt stabilize....thanks guys any input is appreciated!!!

Edit: System Specs
Q9550 @ 2.83GHz|GA EP45-UD3R|Push/pull TRUE
Corsair 620HX|2X2GB Gskill DDR2 800 4 4 4 12 1T
GeForce 8400GS 512MB|XFI Extreme Music
CM Stacker 832. 120mm Fans: 3In3Out
Logitech Z5500|BenQ 22"
2xWD320GB in RAID0 Stripe| WD 1.5TB

 

[IGemini]

Most of the GTL info out there is for P35 chipsets (makes 0.760x too high), P45 values changed. I wouldn't bother with the GTL reference anyway unless you're going higher than you plan to. The rest of the settings look good to me.

I'm not sure if you've pulled your VID already (a program like Core Temp will do that) but you might have already undervolted. Every CPU is different, some you can undervolt pretty well...the one in my comp for example has a VID of 1.225v. Undervolting (or setting a stable voltage, however you want to look at it) is basically done best through trial and error: set, stress, set, stress etc.

 

[ALECUBA]

well before overclocking, in the bios beside the core voltage there was a value when it was set to auto and everything else was default ie:2.83GHZ, this value was 1.16250v, thats why in the rest of the bios settings as i posted theres a value inside brackets....thanks for the feedback, ill post back more results on higher clocks as i reach them....cheers

 

[BTRY B 529th FA BN]

Subscribed; loved my old UD3R + Q9650 & Q9550 setup :thumbsup: