Final Report on my FSB limit for now...
This is what I know. Under Bios 907, this were my finding for OC'ing my Q6600.
Ref link: http://www.xtremesystems.org/forums/...=160606&page=6
"Recap of my findings:
So far With the Maximus and my Q6600 GO:
My CPU Voltage setting of 1.46250v (BIOS), will allow error free Priming with a FSB Frequency 414 giving me 3.7GHz with my 400 NB Strap.
My CPU Voltage setting of 1.506v (BIOS), will allow error free Priming with a FSB Frequency 424 giving me 3.81GHz with my 400 NB Strap.
My CPU Voltage setting of 1.51875v (BIOS), will allow error free Priming with a FSB Frequency 428 giving me 3.85GHz with my 400 NB Strap.
My CPU Voltage setting of 1.51875v (BIOS) starting taking errors 4 minutes into prime with a FSB Frequency 432 giving me 3.8888GHz with my 400 NB Strap.
I did successfully prime 3.9GHz with a FSB Frequency 435 for 45 minutes, but stopped the test.
For my system it requires me to set in the BIOS a CPU core voltage of 1.55000v's, and Everest reads 1.53v.
You also must bump your CPU PLL to 1.60v's.
1.55 Core and only 1.56 PLL would not Prime 3.9GHz error free.
** I added in a TV tuner card 2 days befor my GPU swap, and the system was fine. No problems booting, still 3.8GHz under 907.
I took out an 8600 GT, put in a GX2, and could not boot withought getting a CPU init hang on the LCD poster, right on the initial boot after the install.
I had to back down my FSB speed to give me 3.3GHz to boot for the first time with the GX2 installed. I did fight my way back to 3.4GHz, but no more. (Still on 907)
Now I flashed to BIOS 1004, GX2 still installed, and I am back at a 3.465GHz limit. Any more FSB than 387-388'ish will result in core dumps, Vista lockups, and sometimes not posting. I threw more volts at about everything I could... Took all the posted settings, and combos I could, Enabled, Disabled, and Autoed settings for 2 days...
Made no differeance... Thanks for everybody's help BTW!!
I am keeping 3.465GHz for now until some new info comes into light. Until I hear from another Q6600 Maximus SE dude, who was running at 3.8GHz or faster, and plugged in a GX2, and still heald his speed... I think it's a limit of some sort right now...
I have no explanation, but there it is...
If I have to run my water cooled rig at 3.4, I turned some bells and whistles back on in the BIOS that I like...
I also backed down the voltages to show how easy I can run with a FSB Frequency of 385...
It's not a bad chip! It's a Maximus, Q6600, GX2 combo thing....
Only about 45 minutes, but my stability is there. I have had no problems so far, and don't expect to... (Still on the good side of my 390 FSB limit)
For trivia, a Q6600@3.465GHz and a stock GX2 SSC = 17,775 3DMark06 points at default settings. (Only for the 3DMark fans.. don't yell at me!)
Here is my current 1004 Bios settings for 3.465GHz,
(With a GX2 installed!):
Under Extreme Tweaker
Ai Overclock Tuner : Manual
OC From CPU Level Up : Auto
CPU Ratio Setting : 9
FSB Frequency : 385
FSB Strap to North Bridge : 400
PCI-E Frequency: 110
DRAM Frequency: DDR2-770MHz
DRAM Command Rate : 2T
DRAM Timing Control: Manual
CAS# Latency : 5
RAS# to CAS# Delay : 5
RAS# Precharge : 5
RAS# ActivateTime : 18
RAS# to RAS# Delay : 3
Row Refresh Cycle Time : 35
Write Recovery Time : 5
Read to Precharge Time : 3
Read to Write Delay (S/D) : 8
Write to Read Delay (S) : 3
Write to Read Delay (D) : 5
Read to Read Delay (S) : 4
Read to Read Delay (D) : 6
Write to Write Delay (S) : 4
Write to Write Delay (D) : 6
DRAM Static Read Control: Enabled
Ai Clock Twister : Strong
Transaction Booster : Enabled
Boost Level: 0
CPU Voltage : 1.40625v (BIOS)
CPU PLL Voltage : 1.54v (BIOS)
North Bridge Voltage : 1.43v (BIOS)
DRAM Voltage : 1.80v (BIOS)
FSB Termination Voltage : 1.40v (BIOS)
South Bridge Voltage : 1.050v (BIOS)
Loadline Calibration : Enabled
CPU GTL Reference : 0.63x
North Bridge GTL Reference : 0.67x
DDR2 Channel A REF Voltage : DDR2_REF
DDR2 Channel B REF Voltage : DDR2_REF
DDR2 Controller REF Voltage : DDR2_REF
SB 1.5V Voltage : 1.50v (BIOS)
NB LED Selection : NB Volt
SB LED Selection : SB Volt
CPU LED Selection : CPU Volt
Voltiminder LED : Enabled
CPU Spread Spectrum : Disabled
PCIE Spread Spectrum : Disabled
Under Advanced
And CPU Configuration:
CPU Ratio Setting : 9
C1E Suppport : Disabled
CPU TM Function : Enabled
Vanderpool Technology : Disabled
Execute Disable Bit : Disabled
Max CPUID Value Limit : Disabled
Under Advanced
And USB Configuration :
USB Functions: Enabled
USB 2.0 Controller : Enabled
USB 2.0 Controller Mode: HiSpeed
BIOS EHCI Hand-off : Enabled
Port 64/60 Emulation : Disabled
Legacy USB Support : Enabled
I still love my GX2, but i'm not sure the Maximus SE does?
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