cant seem to get stable OC. will straight/after 3-8 seconds reboot.

be it 400x10,450x9,500x7. can boot but cant prime. FML!!!

the vcore quite high.. can't reduce it?

Robust Graphics Booster.........................[ Turbo ]
CPU Clock Ratio.................................[ 9 ]
Fine CPU Clock Ratio............................[ auto ]
CPU Frequency 4.05GHz (450x9) --------tried 400x10,500x7 already

******Clock Chip Control******

CPU Host Clock Control..........................[ Enabled ]
CPU Host Frequency (Mhz)........................[ 450 ] tried 400x10,500x7 already
PCI Express Frequency (Mhz).....................[ 100 ]
C.I.A 2.........................................[ Disabled ]

***********DRAM control*******

Performance Enhance.............................[ Standard ]
Extreme Memory Profile (XMP)....................[ Auto ]
(G) MCH Frequency Latch.........................[ 333] tried 400,266 already (on different setting though)
System Memory Multipler.........................[ cant remember ]
Memory Frequency 1066...........................[ 900 ] tried 900@1030@1000 already
DRAM Timing Selectable..........................[ Manual ]

CAS Latency Time................................[ 5 ]
tRCD............................................[ 5 ]
tRP.............................................[ 5 ]
tRAS............................................[ 15 ] even tried @5-5-5-18 @ 6-6-6-18

Load-Line Calibration...........................[ Enabled ]
CPU Vcore [ 1.25000 ]...................[ 1.45] tried 1.4-1.55v (1.6v wont boot)
CPU Termination [ 1.20 ]...................[ 1.46 ] (tried 1.3-1.6)
CPU PLL [ 1.55 ]...................[ 1.57 ]
CPU Reference [ 0.760 ]...................[ 63%@66%@67%@68% ] all already tried

MCH Core [ 1.100 ]...................[ 1.46 ]
MCH Reference [ 0.760 ]...................[ 63%@66%@67%@68% ] all tried liao
MCH/DRAM Reference[ 0.900 ]...................[ Auto ]
ICH I/O [ 1.500 ]...................[ Auto ]
ICH Core [ 1.100 ]...................[ 1.2 ]

DRAM Voltage [ 1.800 ]...................[ 2.2 ] tried 2.1-2.36v
DRAM Termination [ 0.900 ]...................[ Auto ]
Channel A Ref [ 0.900 ]...................[ Auto ]
Channel B Ref [ 0.900 ]...................[ Auto ]
__________________

can anyone spot wtf is wrong with my noob setting?? all can boot but cant prime. straight reboot.

sifu-sifu semua?

I reduced it to 1.33. I want to ask something, if my system (on Windows) suddenly freeze, does it mean that my system not stable enough? Previously I put the vcore 1.31 and my system only managed to survive for about 12 hours, then freeze.

---

Added on January 10, 2010, 2:52 pmOk, I think it is very hard to go past 3.2Ghz and make it stable using stock cooler. I reduced the multiplier to 7.5 for 3.0 Ghz. Current vcore is 1.29v

This post has been edited by takercena: Jan 10 2010, 02:52 PM

did u stress it?? prime95 is the way to go~

I think i know who is the culprit. It is EIST. I disable it for now. I enable auto C1e for now so my cpu will consume less power when idle. Let see what happen. http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2725.

The only way to test this is by making computer idle for a while and then quickly start using it.

---

Added on January 10, 2010, 6:18 pmUhh, I read previous posts and some of them can oc 3.4ghz with stock voltage. Am I unlucky here?
Any budget cpu cooler suggestion?

This post has been edited by takercena: Jan 10 2010, 06:24 PM

It could be your motherboard. My Q9450 can go 3.2Ghz at 1.175v for Asus P5Q Deluxe motherboard. For DFI DK P45-T2RS, I have to use 400/400 and this setting:

Voltage Settings
CPU VID Special Add……+12.5mV
DRAM Voltage Control……2.000V
SB Core/CPU PLL Voltage……1.55V
NB Core Voltage……1.25V
CPU VTT Voltage……1.18V
Vcore Droop Control……Enabled
Clockgen Voltage Control……3.45V
CPU GTL 0/2 REF Volt……0.67x
CPU GTL 1/3 REF Volt……0.67x
North Bridge GTL Ref Volt……0.63x

CoolerMaster Hyper 212+. rm120 (i think). perform on par with CCF i suppose.

update..
RM109 new..PCdepot

2nd ..RM90 lyn..today..

im using it..dual fan.. works great..
OCCT 1hrs plus temp just araound 60-63 only

Where is that RM90 cooler?

---

Added on January 11, 2010, 4:36 pmI am thinking that my motherboard is not capable enough for overclocking q9550. I will try this weekend by increasing all voltage except SB to 1.3x. Maybe I should increase SB to 1.55. It seems that after I disable C1E and EIST, the freezing issue is still not solved. The way i tested it is by downloading a file then go back to login screen by pressing switch user.

This post has been edited by takercena: Jan 11 2010, 04:36 PM

sb no need to touch first.. play with nb..

Robust Graphics Booster.........................[ auto ]
CPU Clock Ratio.................................[ 8 ]
Fine CPU Clock Ratio............................[ auto ]
CPU Frequency 3.60GHz ----------[ 450x8 ]
******Clock Chip Control******

CPU Host Clock Control..........................[ Enabled ]
CPU Host Frequency (Mhz)........................[ 450 ]
PCI Express Frequency (Mhz).....................[ 100 ]
C.I.A 2.........................................[ Disabled ]

***********DRAM control*******

Performance Enhance.............................[ Standard ]
(G) MCH Frequency Latch.........................[ auto]
Memory Frequency 800...........................[ 900 ](2.00b)
DRAM Timing Selectable..........................[ Manual ]
CAS Latency Time................................[ 5 ]
tRCD............................................[ 4 ]
tRP.............................................[ 4 ]
tRAS............................................[ 11 ]

Load-Line Calibration...........................[ Enabled ]
CPU Vcore [ 1.25000 ]...................[ 1.30625]
CPU Termination [ 1.20 ]...................[ 1.30 ]
CPU PLL [ 1.55 ]...................[ 1.57 ]
CPU Reference [ 0.760 ]...................[ Auto ]
MCH Core [ 1.100 ]...................[ 1.320 ]
MCH Reference [ 0.760 ]...................[ Auto ]
MCH/DRAM Reference[ 0.900 ]...................[ Auto ]
ICH I/O [ 1.500 ]...................[ Auto ]
ICH Core [ 1.100 ]...................[ Auto ]

DRAM Voltage [ 1.800 ]...................[ 2.120 ]
DRAM Termination [ 0.900 ]...................[ Auto ]
Channel A Ref [ 0.900 ]...................[ Auto ]
Channel B Ref [ 0.900 ]...................[ Auto ]


Hi mate,i got my q9400 on gigabyte ep45-ud3p board with these setting 3.60ghz stable, 8gb(4x sticks)kingston hyperX, air cooling with cooler master N620,CM690 casing 7x120mm fans, Prime95 large FFT test 12 hour idle 34c and max load temperature on core were 58c(Realtemp) i felt my room were so hot exist like standing on a kenny rogers roasting chimney , running on windows 7 ultimate x64bit..thinking of ocing it higher but afraid might spoil the board n cpu as i almost running 24/7 perday..well im kinda newbies noob in oc,just wanna know whether are my settings were good enough? shall i make a little more tweak? any better suggestion?

This post has been edited by djandrew: Jan 11 2010, 07:00 PM

The quality of the motherboard affects overclocking. What is your full spec including the power supply?

Q9550
Abit IP35-e
1 stick Apacer 2GB DDR2 800 @5-5-5-15 //I don't know how to play with ram timing so i leave it auto
Enermax Liberty 500W
Nvidia 9600gt

I think that's it

still didnt succeed. use this currently~ (damn, hit 4ghz prime sure fail)

430x9 = 3870ghz stable.



This post has been edited by uzer85: Jan 13 2010, 01:30 AM

Your spec looks fine. I never used Abit boards before but try raising northbridge voltage a bit with your OC settings.

Buy a 2nd ram first as dual channel is quite important for maximum performance

Finally I am thinking that my system is stable for now:
CPU VCore = 1.3350v
DDR2 Voltage = 1.85v
CPU VTT = 1.275
MCH = 1.330 from 1.250
GTLREF = 67.0%

And Windows Xp doesn't need more than 2 GB ram i think

rig spec?

Since that is stable, you can try lowering your CPU Vcore. Try at 1.25v, then slowly reduce it to 1.175(maybe 1.23, 1.22, 1.21 down to 1.175 or 1.18). Stop undervolting when it's unstable and use the best voltage you can get. Your processor will run cooler.