pushing E8500 from 4ghz to ...

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HI,
Trying to push my E8500 CO from 4GHZ to 4.1ghz-4.2ghz
reached 9.5x440 (~4.1ghz - 4.2ghz) can't get stable!



at the moment my Setting is:

AI Overclock tuner: Manual
CPU Ratio Setting:9.5
FSB Strap to North Bridge:400
FSB Frequency:427
PCI-E Frequency:100
DRAM Frequency: 850

DRAM Timing Control:MANUAL

1st Information :

CAS# Latency: 5
DRAM RAS# to CAS# Delay: 5
DRAM RAS# Precharge: 5
DRAM RAS# Activate to Precharge: 15
RAS# to RAS# Delay : AUTO
Row Refresh Cycle Time: 50
Write Recovery Time: AUTO
Read to Precharge Time: AUTO


3rd Information :

WRITE to PRE Delay:AUTO
READ to PRE Delay:AUTO
PRE to PRE Delay:AUTO
ALL PRE to ACT Delay:AUTO
ALL PRE to REF Delay:AUTO
DRAM Static Read Control: DISABLED
DRAM Read Training: DISABLED
MEM. OC Charger:ENABLED
AI Clock Twister: LIGHTER
AI Transaction Booster:PERFORMANCE LEVEL 10
ALL PULL-INS DISABLED

CPU Voltage:1.38 (1.3520 in CPU-Z)
CPU GTL Voltage Reference (0/2):63
CPU GTL Voltage Reference (1/3):63
CPU PLL Voltage:1.52

FSB Termination Voltage:1.24
DRAM Voltage:2.1
NB Voltage:1.24
NB GTL Reference:.63
SBridge Voltage:AUTO
PCIE SATA Voltage:AUTO

Load Line Calibration:ENABLED
CPU Spread Spectrum:DISABLED
PCIE Spread Spectrum:DISABLED
CPU Clock Skew :AUTO
NB Clock Skew :AUTO

to avoid questions:
My spec is in Sign
on this setting run prime 100% stable
tried 1.40v still not stable!

what Can I correct/recommend/inrease voltages..?to get more stable

TNX
 
fsbt term you can go to 1.4v and nb is your own choice really, getting it too hot though can cause instability same as having too much voltage going through it. I run 1.65v on my nb but its watercooled.
 
P45 shouldnt need 1.5v on the nb. My E8600 @ 4.4Ghz only needs like 1.25v on the nb with my P45. I would knock it up to say 1.3v just to be sure its not that, Im thinking you need to mess with ur GTL's. Try 67 and 63.
 
CPU @ 1.45v max and fsbt @ 1.4v is the general consesus for safe max 45nm voltages, I don't own a p45 chipset (yet) so didn't comment on that but only to raise it and watch out for heat issues as it seemed a little low to me

You said you have raised vcore but doesn't improve, so must be a different voltage to increase, however I won't be giving any more advice as I don't own the exact same of as you :rolleyes:
 
thank you all...

JUST rised:
NB to 1.26
FSB to 1.26
all GTL's to 63.5
CPU PPL to 1.54

and now on 443x9.5 ... 4210.60mhz (4.2ghz)

Idle same as before 40-45C

after couple of hours if it remains stable will run stress tests
 
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