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Q9550 OverClock

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JohnBoy55

Registered
Joined
Apr 13, 2009
Last week I posted on som helpfor overclocking this and got feed back and resources to read up on overclocking the Quads with much appreciation.

So today, I need to show what changes were made and ask again if anything was done wrong, or suggestions to make it right. I'll start off with some system info.

CPU- Q9550 2.83GHz EO Stepping (SLB8V)
MB- ASUS Rampage Formula
RAM- Corsair Dominators 4GB 1066MHz PC2-8500C5
HD- WD Caviar Black WD1FALS 1TB
Video- BFG GeForce GTX 285 OCFU 1024 GDDR3
PSU- Corsair HX850w
Cooling- Artic Silver 5 for CPU
Zalman 9700 CPU Cooler
Case- Cooler-Master 690 with Four 120MM [email protected] Two ThermalTake
120MM Fans manual adjusted from 38.6 to 93.7CFM. One Evercool
80x80x15 Fan on side panel cooling MB.

Changes Made To System Bios: Overclock-Set to Manual.
CPU-Set to 8.5
FSB- Set to 400
PCIE Frequency- Set to 100
CPU Spectrum- Set to Disable.
Vanderpool- Set to Disable.
PCI Clock Synchronization-*Could not locate
in Bios unless listed as something different.
What else could it be named?

Since last Friday, ran PRIME 95- Small FFT's for 12 hours.
Large FFT's for 12 hours.
Blend for 12 hours.
All Three Tests PASSED.

Temps from REALTEMP/CPUID: All Four Cores- 38/36/36/36 Celsius.

VID: 1.1875 Taken from REALTEMP/CPUID.

Core Clock: From CPUID- Core Speed-3400.3 MHz
Multiplier- x8.5
Bus Speed- 400.0 FSB
Rated FSB- 1600.0 MHz
Core Voltage- 1.192 V

Memory- DRAM Frequency 533.4 MHz
FSB DRAM- 3:4
Settings- 5-5-5-15 52 Clocks 2T (Recommended By Corsair)
Voltage- 2.10 V (Recommended by Corsair)

GPU Core Temp- 43 Celsius from CPUID.

The only thing I'm having trouble with is not finding the PCI Clock Synchronization to change in Bios, unless it not listed or under a different name I don't recognize.

The Setting for the CPU VCore is set at AUTO. Is the core voltage CPUID listed at 1.192v safe to change from AUTO to this, or should it be higher? Anything else I might have overlooked?

Again, my thanks and appreciation for the help and the info.
 

MIAHALLEN

Senior Member
Joined
Aug 29, 2007
Don't worry about "PCI Clock Synchronization"...it's not important for your OC. Sounds like you CPU is pretty strong! Good clocks for that low voltage :thup:

You could try to push the FSB up a bit higher, since it's obvious the CPU can handle it :cool: But you may have to drop the MEM divider to 1:1 and raise the NB voltage to get it stable.

If you're happy with it, leave it...if you want to go further...

...try this:
- change the CPU multi to x7.5
- change the MEM divider to 5:6
- bump the FSB up to 450MHz
- run Prime blend for 1 hour...
If it does not pass, report back, and let us know!

If it passes without error:
- manually adjust the CPU voltage up to 1.25V
- change the CPU multi to 8.5
- run Prime blend for 1 more hour...

Let us know the results :)
 
OP
J

JohnBoy55

Registered
Joined
Apr 13, 2009
Thank You. Will change it and run tests tommorrow. Will post back with results.
 

MIAHALLEN

Senior Member
Joined
Aug 29, 2007
DRAM Frequency 533.4 MHz
FSB DRAM- 3:4
Settings- 5-5-5-15 52 Clocks 2T (Recommended By Corsair)
Voltage- 2.10 V (Recommended by Corsair)

Your FSB is configured here at 400MHz.
The "FSB DRAM" of 3:4 gives you the 533MHz mem frequency. (aka "mem multi")

...try this:
- change the CPU multi to x7.5
- change the MEM divider to 5:6
- bump the FSB up to 450MHz

If you change the FSB DRAM to 5:6, and the FSB to 450MHz, the resulting mem frequency should be 540MHz...an OC that should not cause any issues with your voltages & timings ;)

Another viable option would be the FSB DRAM 1:1 setting which would lock the mem frequency = FSB...450MHz. That would be a bit of an underclock on your memory...but a safer way to find a higher FSB :)
 
OP
J

JohnBoy55

Registered
Joined
Apr 13, 2009
Let me see if I can change this, and I'll get back to you. Thank you!