Q9550 Post Your OC settings, help me get 3.8/4.0ghz

KHALIK

KHALIK

KHALIK

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Joined
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Can you post your Overclock settings here.

Has anyone overlocked a Q9550 to reach a stable 3.8/4ghz?

What do these abbreviated terms mean?

PLL ?
NB ?
VTT ?
GTL ?
SBridge ?
FSB term ?

I cannot find these on my bios settings under those names.





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I have very limited knowledge of cpu overclocking, and managed to overclock my Q9550.

Default
Mobo: Gigabyte 965P-S3 rev3.3
CPU 2.83GHZ @ 12MB Cache, E0 stepping
CPU Voltage 1.22
OCZ Repear 4GB DDR2 6400 (400/800MHz RAM Speed)


Overclocked
CPU 3.612GHZ @ 8.5 multiplyer
CPU Voltage 1.28
Memory Voltage 2.2
Memory Timings 5-5-5-12
FSB 425 / Memory SPP 2:00

cpuz_q9550_1.PNG

cpuz_q9550_2.PNG


Idle Temperture:
cpu_temp.PNG



Load Temperture
cpu_tempload.PNG
 
Last edited:
May be better to post this on the Overclocking & cooling sub forum.

But that looks decent already for the voltage. Try increasing your CPU voltage a bit and the FSB whislt keeping an eye on the temperatures. You should be able to put 1.4v through it under air without any issues if cooled ok. Your MB may have a FSB wall which limits your OC. Try reducing the CPU multi to see what FSB your motherboard can do.
Different MB have different Bios options
 
I managed to get a stable 3.825GHz with a C1 revision of the Q9550 on a P45 chipset. I upped the core voltage to 1.3125v, FSB to 450 and multiplier to 8.5. RAM was default at 1066MHz @ 2.2v. CPU temps were idle at around 45. Load temps were mid 50s. All temps were recorded under water cooling btw.
 
At the moment i'm at 3.8ghz stable. Mobo is Asus P5Q Pro.

FSB - 447 (x8.5)
Vcore (BIOS) - 1.34375v (idle = 1.320v, load = 1.336v using CPU-Z)
Memory - 894 (1:1), 2.20v, 5,5,5,15 as per specs.
Northbridge - 1.32v (8gb using up four slots)
CPU PPL - Auto
FSB Term - Auto
SB - Auto
Load Line Calibration - Enabled (PC does post upon a reboot on anything else)
Speedstep and C1E - Enabled

Everything else is left as it is.
 
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