Q9550 action inside

[Big Lar]

Originally posted by: jjrowley
AI Overclock tuner: Manual
CPU Ratio Setting: 8.5
FSB Frequency: 471
PCI-E Frequency: 100
FSB Strap to North Bridge: 400 (Try 333)
DRAM Frequency: DDR2-942MHz
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: 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 : 3
Row Refresh Cycle Time: 60
Write Recovery Time: 6
Read to Precharge Time: 3

2nd Information :
READ to WRITE Delay (S/D): 9
Write to Read Delay (S): 4
WRITE to READ Delay (D): 6
READ to READ Delay (S): 5
READ to READ Delay (D): 7
WRITE to WRITE Delay (S): 5
WRITE to WRITE Delay (D): 7

3rd Information :
WRITE to PRE Delay: 15
READ to PRE Delay: 6
PRE to PRE Delay: 2 (1)
ALL PRE to ACT Delay: 7
ALL PRE to REF Delay: 7

DRAM Static Read Control: Disabled
DRAM Read Training: Disabled
MEM. OC Charger: Enabled (Auto or Disabled)
AI Clock Twister: Moderate (Try Light)
AI Transaction Booster: Manual
Common Performance Level: 10
All Pull-Ins: Disabled

CPU Voltage: 1.41250
CPU GTL Voltage Reference (0/2): 0.675
CPU GTL Voltage Reference (1/3): 0.675
CPU PLL Voltage: 1.60 (wouldn't go higher)
FSB Termination Voltage: 1.36
DRAM Voltage: 2.20 (probabaly about 2.28v at that setting)
NB Voltage: 1.36
NB GTL Reference: 0.675
SBridge Voltage: 1.2
PCIE SATA Voltage: Auto

Load Line Calibration: Enabled
CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Auto
CPU Clock Skew : 100
NB Clock Skew : 200
CPU Margin Enhancement: Compatible

I can't stay away from the higher numbers, but I worry that my numbers are getting a bit high. What do you guys think?

I put the optional settings in ( ). Your ram timings are Real loose, but using the Light setting will help and maybe you can tighten em up some.

As I stated, been playing around with settings and got 8x484 1 hour OCCT Stable last night. It was the Clock Twister set at medium hanging me up, changed it to light and it passed no problem. Cpu volts are 1.29375v in bios, 1.272v idle.

Larry

 

[jjrowley]

bah, it didn't last.

If I get certain settings dialed in, and leave the others on Auto because it works when there on Auto and crashes when I change them, is this a bad thing? Or is it just using what it needs?

 

[n7]

Originally posted by: Big Lar
OK, So here's how I mess with the NB GTL

So you have; 1.34vtt and a cpu gtl of 0.680, and are running fairly well at 1.36NB. My formula if you will below pertaining to Your settings.

1.34 x .680 = 0.9112 divided by 1.36 = 0.67 So to break it down,=

vtt x cpu/gtl = TREF divided by NB Voltage = NB GTL So with my theory your NB GTL should be .670

It seems to work out pretty close, at least for my chip. Hope that helps.

Larry

My NB GTL is indeed @ 0.67.

Nice calculating.

Originally posted by: jjrowley
bah, it didn't last.

If I get certain settings dialed in, and leave the others on Auto because it works when there on Auto and crashes when I change them, is this a bad thing? Or is it just using what it needs?

What is working on auto that doesn't work when set manually?

And yeah, i'd lower vdimm as our boards overvolt by about 0.08v.

 

[Big Lar]

@n7, just for grins, maybe try 0.675 and then 0.680 on the NB GTL. Been doing alot of testing and have come to the conclusion that the vtt overvolts on this board, hence the need for a higher NB GTL.

I have mine running at 3900 right now with a NB GTL of .660 whereas it should be less according to the bios set vtt. May be worth a shot as it is working out here.

Larry

 

[jjrowley]

I give up. I'm starting over at stock settings and working up slower.
From what I have learned in reading now:

Vcore limit = 1.3625
VTT (FSB Termination?) limit = 1.2~1.3

What other limits should I follow for this chip?

 

[Big Lar]

Originally posted by: jjrowley
I give up. I'm starting over at stock settings and working up slower.
From what I have learned in reading now:

Vcore limit = 1.3625
VTT (FSB Termination?) limit = 1.2~1.3

What other limits should I follow for this chip?

Cpu= 1.37v or so

VTT= 1.37v or so

CPU/PLL= 1.60v

Dram= 1.96v (tops 2.02v),if rated for 2.0/2.1v

NB= 1.40v or so, 1.4v is pushing it without active cooling.

Thats the major ones and Heat of course.

Larry