Slightest changes aren't tolerated.

HatMan · 27 Aug 2008 at 10:30

My rig, as sig', is a year old now me thinks. At stock everything it runs perfectly. I am preparing to upgrade my CPU to a 9550 E0 and a 4870X2 but am concerned about a few issues I have with the current setup.

My overclocking days of this rig are long gone CPU wise as it doesn't play ball with anything greater then 10MHz!! I have recently been playing with the RAM 4Gb of OCZ 6400C5. I upped the FSB of my P35DQ6 to 300 and knocked the multiplier to 8 leaving the Q6600 at stock. The RAM score went from 5.7 to 5.9 (Vista HPx64) but failed after 2 days. Now the PC won't boot at all with an FSB of 300. I did set the PCiE bus to 100MHz.

I have played with various voltages and yet nothing. The bios constantly resets to stock 266 x 9. My question is simply this... Is it the CPU that is useless or do I have a dodgy mobo?

I would like to bin the mobo, the RAM and the CPU and go X48, but I cannot afford to replace everything. I would like to be able to game at 1680 x 1050, all high so I want to change the CPU and the graphics card but am worried I will be back to square one again.

Thanks

jennidc · 27 Aug 2008 at 11:00

OC'ing

Turnoff all Speedstepping options etc

If you can't OC by 10mhz there is a setting somwhere that is wrong.

It may be easiest to reset the CMOS and run optimized defaults and start a fresh. Have you tried the latest BIOS updates for your motherboard.

Here is a template i followed for my P5q deluxe - got this from XS from a guy called BeastNostro - he managed 3.6 but I have only got 3.3 (800mhz for free on 4 cores is still nice)

It may be worth checking threads for people with the same CPU/Mobi combination and ask if they could send you there BIOS settings.

Bios 1103 and 1201:

**** System Performance Settings ****
*******************************
AI Overclock tuner: Manual
CPU Ratio Setting: 8.0
FSB Frequency: 450
PCI-E Frequency: 101
FSB Strap to North Bridge: Auto
DRAM Frequency: DDR2-901 MHz
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: 5-5-5-15-3-52-6-3
CAS# Latency: 5
DRAM RAS# to CAS# Delay: 5
DRAM RAS# Precharge: 5
DRAM RAS# Activate to Precharge: 15
RAS# to RAS# Delay : AUTO
Row Refresh Cycle Time: AUTO
Write Recovery Time: AUTO
Read to Precharge Time: AUTO

2nd Information : 8-3-5-4-6-4-6
READ to WRITE Delay (S/D): AUTO
Write to Read Delay (S): AUTO
WRITE to READ Delay (D): AUTO
READ to READ Delay (S): AUTO
READ to READ Delay (D): AUTO
WRITE to WRITE Delay (S): AUTO
WRITE to WRITE Delay (D): AUTO

3rd Information : 14-5-1-6-6
WRITE to PRE Delay: AUTO
READ to PRE Delay: AUTO
PRE to PRE Delay: AUTO
ALL PRE to ACT Delay: AUTO
ALL PRE to REF Delay: AUTO

DRAM Static Read Control: Disabled
DRAM Read Training: Auto
MEM. OC Charger: Auto
AI Clock Twister: Auto
AI Transaction Booster: Auto

All Pull-In's: Disabled

CPU Voltage: 1.425 ( 1.416v idle | 1.43 full )
CPU GTL Voltage Reference (0/2): 0.630
CPU GTL Voltage Reference (1/3): 0.670
CPU PLL Voltage: 1.56
FSB Termination Voltage: 1.28
NB Voltage: 1.26
DRAM Voltage: 1.96
NB GTL Reference: 0.630
SBridge Voltage: 1.10
PCIE SATA Voltage: 1.50

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

**** Advance CPU Settings ****
**************************
CPU Ratio Setting : 8x
C1E Support: Disabled
Max CPUID Value Limit: Disabled
Intel Virtualization Tech: Disabled
CPU TM Function: Disabled
Execute Disable Bit: Disabled

Pneumonic · 27 Aug 2008 at 11:12

Set your FSB to Northbridge Strap to 333mhz, Disable Transaction Booster (in adition to above).. you shouldnt need so much PLL voltage either 1.5v should be enough

pastymuncher · 27 Aug 2008 at 11:35

Have you got the latest bios?

matja · 27 Aug 2008 at 12:30

Dunno if it helps explain, but I have the same problem on my Asus P5WDG2-WS Pro if I have my PCI-X RAID card installed.

I can't even boot an OS by overclocking my E6600 from 2.4GHz to 2.5GHz without getting all sorts of crashes and disk errors.

If I pull out the RAID card and boot from onboard SATA, i can get 3.2GHz, prime-tested and all. I've tried fixing the PCI-X/PCI-E bus frequencies (they report as always being fixed), but to no avail.

Cob · 27 Aug 2008 at 13:07

You've still got a damn good set-up there. Did you drop the Memory Multiplier before upping the FSB?

HatMan · 27 Aug 2008 at 23:03

Ok information overload there. Um yes I did drop the MM to give 800 as well as higher. Problem I have is one day it will run with the FSB at 300 the next it defaults on it's own back to 266. If it has defaulted I cannot raise it again until the board "feels like it" I am not bothered about the OC so much it's just that with the memory running faster and the FSB at 300 the PC was slightly faster and a tad more repsonsive. I don't know whether to blame the CPU or the mobo. Yes I am running F8.

Stupid PC