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Q9550 at 3.6 unstable

584 Views 7 Replies 5 Participants Last post by  ZealotKi11er
Q9550 (C1) @ 3.6 | P5Q Pro | 4870 | 4Gb G.Skill DDR2-1000 | Caviar Black | Vendetta 2 | Modu82+ 625W | Antec 300

Was stable at 424 FBS (3.6) previously now fails Prime 95 after 20 seconds. But seems to be stable at 410 FSB . Recent changes: XP SP3 32-bit to Windows 7 64-bit, OCZ Vertex 120GB.

Below are my settings. What should I change? Thanks

AI Overclock tuner : Manual
CPU Ratio Setting : Auto
FSB Frequency : 424
PCI-E Frequency : 100
FSB Strap to North Bridge: 333
DRAM Frequency : DDR2-848
DRAM CLK Skew on Channel A1: AUTO
DRAM CLK Skew on Channel A2: AUTO
DRAM CLK Skew on Channel B1: AUTO
DRAM CLK Skew on Channel B2: AUTO
DRAM Timing Control : Auto

1st Information : (5-5-5-15-3-52-6-3)
2nd Information : (8-3-5-4-6-4-6)
3rd Information : (14-5-1-6-6)

CPU Voltage : 1.27500
CPU GTL Voltage Reference: 0.65
CPU PLL Voltage : 1.54
FSB Termination Voltage: 1.36
DRAM Voltage : 2.02
NB Voltage : 1.40
NB GTL Reference : Auto
SBridge Voltage : 1.20
PCIE SATA Voltage : Auto

Load Line Calibration : Enabled
CPU Spread Spectrum : Disabled
PCIE Spread Spectrum : Disabled
CPU Clock Skew : AUTO
NB Clock Skew : AUTO
CPU Margin Enhancement: Optimized

SpeedStep : Disabled
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1 - 8 of 8 Posts
in order to support anything above about 400 FSB your NB needs more than 1.4v. Try increasing it little by little and see what you get
Quote:

Originally Posted by fencefeet View Post
in order to support anything above about 400 FSB your NB needs more than 1.4v. Try increasing it little by little and see what you get
This.

Also, increase the CPU voltage up to 1.325 (C1 requires more voltage than E0, and that 1.325 voltage will ensure that you have enough volts).
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Is more than 1.4 NB safe? I could have sworn that the general consensus was that beyond 1.4 on the NB was very dangerous for the 45nm Core2Quads.
Quote:

Originally Posted by Polaris09 View Post
Is more than 1.4 NB safe? I could have sworn that the general consensus was that beyond 1.4 on the NB was very dangerous for the 45nm Core2Quads.
Sorry, 1.4v is max lol, I don't know what I was thinking when I typed it. 1.4v on the NB should let you go as high as you want. More CPU volts though!

Anyways, off to work, so I cannot reply any more.
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2
Set:
CPU PLL Voltage: 1.57v
FSB Termination Voltage: 1.4v (do not go more than this at risk of damaging CPU).
1.4 on the north is fine here are some pics of what my settings are at 4.0. u need to raise the cpu Voltage. Hope this will help u get yours stable.







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4
This is easy as i had my Q6600 @ 3.60Ghz 450*8.

AI Overclock tuner : Manual
CPU Ratio Setting : Auto
FSB Frequency : 450
PCI-E Frequency : 100
FSB Strap to North Bridge : 400
DRAM Frequency : 5-5-5-15
DRAM CLK Skew on Channel A1 : AUTO
DRAM CLK Skew on Channel A2 : AUTO
DRAM CLK Skew on Channel B1 : AUTO
DRAM CLK Skew on Channel B2 : AUTO
DRAM Timing Control : Auto

1st Information : (5-5-5-15-3-52-6-3)
2nd Information : (8-3-5-4-6-4-6)
3rd Information : (14-5-1-6-6)

CPU Voltage : 1.27500 + or -
CPU GTL Voltage Reference : Auto
CPU PLL Voltage :Auto
FSB Termination Voltage : Auto
DRAM Voltage : 2.0
NB Voltage : Auto
NB GTL Reference : Auto
SBridge Voltage : 1.20
PCIE SATA Voltage : 1.5

Load Line Calibration : Enabled
CPU Spread Spectrum : Disabled
PCIE Spread Spectrum : Disabled
CPU Clock Skew : AUTO
NB Clock Skew : AUTO
CPU Margin Enhancement : Optimized

SpeedStep : Disabled
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1 - 8 of 8 Posts
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