Need help with Q9550+P5Q pro

[genbrien]

I have a Q9550 and I tried to overclocked it to past 4ghz but I'm stuck at 3.8ghz (447 * 8.5). My ex E8600 was able to reach 4.3 ( 4.4 was ok but a little too hot...)

I cranked up all voltage in my mobo without exeeding the yellow zone but I can't get it stable.

the vcore was at 1.35 (tried 1.45....)
the fsb was 1.3 -1.4
nb 1.3(tried 1.5)
pll 1.68(tried 1.76)
ram 2.12(tried 2.2)

DRAM Frequency: ~1066Mhz
CAS# Latency: 5
DRAM RAS# to CAS# Delay: 5
DRAM RAS# Precharge: 5
DRAM RAS# Activate to Precharge: 15
RAS# to RAS# Delay : 4
Row Refresh Cycle Time: 60
Write Recovery Time: 6
Read to Precharge Time: 5
READ to WRITE Delay (S/D): 10
Write to Read Delay (S): 4
WRITE to READ Delay (D): 5
READ to READ Delay (S): 6
READ to READ Delay (D): 6
WRITE to WRITE Delay (S): 5
WRITE to WRITE Delay (D): 6
WRITE to PRE Delay: 14
READ to PRE Delay: 6
PRE to PRE Delay: 1
ALL PRE to ACT Delay: 6
ALL PRE to REF Delay: 6
DRAM Static Read Control: Disabled
DRAM Read Training: Auto
MEM. OC Charger: Auto
AI Clock Twister: Lightest
AI Transaction Booster: Manual
Common Performance Level: 9
Pull-In of CHA PH1: DISABLED
Pull-In of CHA PH2: DISABLED
Pull-In of CHA PH3: DISABLED
Pull-In of CHA PH4: DISABLED
Pull-In of CHB PH1: DISABLED
Pull-In of CHB PH2: DISABLED
Pull-In of CHB PH3: DISABLED
Pull-In of CHB PH4: DISABLE

If someone here can give me a hand with that

[_dangtx_]

drop multi and see whats the max fsb the cpu can take under ANY condition :)


and 3.8 is very good for the cpu, on air i presume?

[genbrien]

Originally Posted by _dangtx_

drop multi and see whats the max fsb the cpu can take under ANY condition :)


and 3.8 is very good for the cpu, on air i presume?

ok thank you
I'll try it.
do you think I should put it at 6x and let the voltage as they are now, or put back the default voltage ?

yes on air. Xigmatech 1283 with a scythe kaze 200rpm + the original fan on push pull

[Zero82z]

Is it a C1 or E0 chip? If it's a C1, you can pretty much forget about getting past 3.8GHz.

[Synth]

Originally Posted by Zero82z

Is it a C1 or E0 chip? If it's a C1, you can pretty much forget about getting past 3.8GHz.

True. My C1 makes it to 3,825mhz max.

[genbrien]

its a E0

[Delavan]

My trusty Q9550 C1 doesn't go past 3.8GHz on my P5Q pro (rig in sig). Vcore is 1.264V, FSB 450.
It's rock-steady there...

Well, it does reach 4.0GHz for benchmarking runs, but always has a "failing worker" in Orthos after a few minutes.

I haven't tried to reach 4.0GHz in a long time, as this CPU is pretty good at 3.8GHz. I would love to be part of the 4.0GHz club!!! But my 20 000 3dmarks 06 score with ONLY a GTX260 C216 OC is satisfactory (until I get the itch for FERMI if worth it).

[Zero82z]

Originally Posted by Synth

True. My C1 makes it to 3,825mhz max.

Yours, mine, and everyone else's ;). I've never seen anyone break 3.825GHz on a C1 Q9550 as far as stable overclocks are concerned. I've run mine at 4GHz before, but nothing I did would make it pass Linpack.

[genbrien]

ok so I did some test, and it doesnt boot past 465fsb........
maybe it's the MB.....
anyway, thx all for your help, but I think I'll stay at 3.8

[MarcusFoX]

for 4ghz set these up first

drop the performance level to 10..

take off static dram read
Take of OC charger.

vcore set it 1.425

adjust the pll between 1.5v and 1.6v

I found that fsb and NB voltage respond the best for me keep the FSB between 1.32-1.425v and the NB between 1.3825v and 1.5v.

after this is dont find you max stable fsb for that setup its different with every board and chip combo there all unique. normally with asus p45 setups it
its around 501... I got my M2F to around 495 24/7 stable but need huge pll/ fsb to do it.
remember for stablity Memory compatibility and Voltage will play a big roll with you OC since s775 quads are very dependant on the memory. try a memory voltage if nothing else works of 2.3v and see if that gets it stable. only use this as a last resort since you'll need passive cooling with anything past this with ddr2.

do some bios research as well find out which bios works the best for others.