__________________
Gigabyte GA X38 DQ6 Blog Voltage Measuring Guide Build Guide Abit IX38 Quad GT - Living Review II Gigabyte GA X48 DQ6 Living Review Foxconn Mars Living Review Asus P5E3 Deluxe Wifi Living Review

Hi guys

This is the 1st time I have assembled my own PC not to mention trying my hands on OCing.

I tuned the rig to run at 3.6Ghz and was able to run the Prime95 test for 1hr before cores start failing or even system reboot and the specs for my rig are as below:

Intel Q9450
GA X48T-DQ6
GSkill 2 x 1 DDR3-1600 CL 7-7-7-18 1.9V
Thermaltake Tough Power 750W
Thermalright Ultra 120 Extreme
Powercolor HD 3870X2
Seagate 500GB 32MB Sata II
Noctua 12cm Fan
Antect 900

I hope to get some advices from you experts on how to OC it optimiumly and many thanks in advance

Hi mid9sun,
Welcome to the forum

We'll try our best to help. Can you do a couple of things for us which will help ??
1st copy & paste Bios Template from the above link abd add the current settings from your bios. That way we'll be able to get an idea what may need tweaking.

It would also help if you could add your components to your profile as shown Reload this Page How To Add Your System Specs To Your Profile!

thanks

__________________
Gigabyte GA X38 DQ6 Blog Voltage Measuring Guide Build Guide Abit IX38 Quad GT - Living Review II Gigabyte GA X48 DQ6 Living Review Foxconn Mars Living Review Asus P5E3 Deluxe Wifi Living Review

Thanks for the warm welcome. I have added the components to my profile, let me know if you not able to see it or anything.

Also here's the settings from my bios (F4):


GIGABYTE GA X48T DQ6 Clock Settings

MB Intelligent Tweaker (MIT)
Robust Graphics Booster...........: Auto
CPU Clock Ratio...................: 8x
Fine CPU Clock Ratio...........: +0.5
CPU Frequency.....................: 3.85Ghz
CPU Host Clock Control............: Enabled
CPU Host Frequency(Mhz)...........: 450
PCI Express Frequency (Mhz).......: Auto
C.I.A.2...........................: Disabled
Performance Enhance...............: Standard
System Memory Multiplier (SPD)....: Auto
Memory Frequency(Mhz).............: 1800
DRAM Timing Selectable ...........: Manual
Standard Timing Control
CAS Latency Time (tCL)............: 8
DRAM RAS# to CAS# (tRCD).........: 7
DRAM RAS# Precharge (tRP).........: 7
Precharge Delay (tRAS)............: 18
Advanced Timing Control
ACT to ACT Delay(tRRD)............: 4
Rank Write to READ Delay (tWTR)...: 5
Write To Precharge Delay (tWR)....: 10
Refresh to ACT Delay (tRFC).......: 74
Read To Precharge Delay (tRTP)....: 5
Static tREAD Value (tRD)..........: 8
Static tREAD Phase Adj............: Auto
Command Rate (CMD)................: 2T
Clock Driving and Skew Control
CPU/PCIEX Clock Driving Control...: 800mv
CPU Clock Skew Control............: Normal
(G)MCH Clock Skew Control.........: Normal
System Voltage Control () = Base Voltages
DDR3 OverVoltage Control...(1.50v): +0.5
PCI-E OverVoltage Control.,(1.50v): Normal
FSB OverVoltage... 65nm = 1.25v..+: +0.35
(G)MCH OverVoltage Control,(1.25v): 0.275
CPU GTLREF1 Voltage*.......(67%)..: Auto
CPU GTLREF2 Voltage*.......(61%)..: Normal
Loadline Calibration..............: Enable
CPU Voltage Control...............: +1.38125v
Normal CPU Vcore..................: 1.25v
Note: * Hidden Features Press [CTRL] + [F1] from main Menu to Access + FSB 45nm= 1.15v
Advanced Bios Features
CPU Multi-Threading...............: Cannot find the parameters (even after Ctrl-F1)
Limit CPUID Max to 3..............: Disable
No-Execute Memory Protect.........: Disable
CPU Enhanced Halt(CIE)............: Disable
CPU Thermal Monitor.............: Disable
CPU Thermal Monitor 2.............: Cannot find the parameters (even after Ctrl-F1)
CPU EIST Function.................: Disable
Virtuaalization Technology........: Disable


Please take a look

have you tried beta bios F5A or F5D, I use F5D myself but still sometimes games will crash.

games crashing every so often means one or more of your voltages is/are not up to par...either the Vdimm, MCH or Vcore might be the culprit(s).

As the Ace says. May be ram timings as well. Have you run Prime ??

__________________
Gigabyte GA X38 DQ6 Blog Voltage Measuring Guide Build Guide Abit IX38 Quad GT - Living Review II Gigabyte GA X48 DQ6 Living Review Foxconn Mars Living Review Asus P5E3 Deluxe Wifi Living Review

hmmm ok the dimm i use the xms (profile 1)setting 2.00 77720 cr1 timings and i have tried 400 on mech and been as high as 1.118 on the vcore wolfdale 8500 i guess i should kick up the vcore just dont want to fry it, max is 1.25 i see so people well past that.

in order to run the corsair at it rated speed of 1800 i have to do 7x450 any advice ???

My games dont crash and everything is fine if I do normal stuff. However, the pc reboots when I run prime or occt.

My guess is the the system is unstable when it get loaded way beyond normal usage. How do it fix this??

I hate to say this but your ram is not the best for pushing the limits, do you have problems running it at 1600 in prime or occt. is it stable? I sent it back and paid out the aZZ for the corsair 1800 $516.00 USD for 2 mb and it hurt but it made the system along with the HD4870. Im done i think its a solid system now might get another 4870 and try crossfire down the road.


try changing the vcore, vdimm, one setting at a time till its solid, that what i just got done doing vdimm 2.05 vcore 122.125 , pcie +10 fsb +10 gmch .400 running 7x450 and 7-7-7-20-cr1