Hi all, my first time overclocking so still noob. got a little help but i cant seem to get past 2.8GHz. Here's my current computer rig:

E6300
asus p5b e-plus
a-data 2x 1gb 800mhz ddr2 ram
msi nx8800gtx
creative xtrememusic

my current stable settings are:

Ai Tuning: Manual
CPU Frequency: 399
Ram Frequency: DDR2-798
PCI-e Frequency: 100
PCI Frequency: 33.33
Spread Spectrum: Disabled
Memory Voltage: 2.3
CPU Vcore: 1.3
FSB Termination voltage: 1.4
NB Vcore: 1.45
SB Vcore: 1.6
ICH Voltage: Auto

CPU settings;
Modify Ratio Support: Enabled
Ratio CMOS Setting: 7x
C1E Support: Disabled
Max CPUID Value Limit: Disabled
Vanderpool Technology: Disabled
CPU TM Function: Enabled
Execute Disable Bit: Enabled
PECI: Disabled

NB Settings:
Memory Remap Feature: Disabled
Configure DRAM by SPD: Disabled
Ram Timings: 5-5-5-15-5-42-13-13-13-13
Static Read Control: Disabled

The problem I have is, when i up the CPU Freq to 400MHz, the whole system cannot boot. I tried upping the NB voltage, CPU Vcore voltage, still cannot boot. I make the ram timings 6-6-6-18-6-42-15-15-15-15, still cannot. Change the multiplier to 6x, still cannot. These are some settings that i have already tried:

At 7x multiplier:


1)
CPU: 420
RAM: 840
Mem V: 2.3V
CPU V: 1.5V
FSB Termination: 1.4V
NV Vcore: 1.65V
SB Vcore: 1.6V
ICH V: Auto

Cannot boot

2)
CPU: 400
RAM: 800
Mem V: 2.3V
CPU V: 1.5V
FSB Termination: 1.4V
NV Vcore: 1.65V
SB Vcore: 1.6V
ICH V: Auto

Cannot boot

3)
CPU: 400
RAM: 800
Mem V: 2.3V
CPU V: 1.4V
FSB Termination: 1.4V
NV Vcore: 1.65V
SB Vcore: 1.6V
ICH V: Auto

Manage to boot once, computer hang after POST messages. Restart the com, monitor got signal but only an underscore blinking at top left hand corner.. What does this mean?

4)
CPU: 400
RAM: 800
Mem V: 2.3V
CPU V: 1.4V
FSB Termination: 1.40V
NV Vcore: 1.55V
SB Vcore: 1.6V
ICH V: Auto

Cannot boot

5)
CPU: 400
RAM: 800
Mem V: 2.3V
CPU V: 1.45V
FSB Termination: 1.4V
NV Vcore: 1.65V
SB Vcore: 1.6V
ICH V: Auto

Cannot boot

6)
CPU: 400
RAM: 800
Mem V: 2.3V
CPU V: 1.45V
FSB Termination: 1.4V
NV Vcore: 1.55V
SB Vcore: 1.6V
ICH V: Auto

Cannot boot

7)
CPU freq:400
ram freq: 800
cpuV: 1.4V
memV: 2.3V
NBV: 1.55V & 1.65
SBV: 1.6V

Ram timings: 6-6-6-18-6-42-15-15-15-15

8)
CPU freq:400
ram freq: 800
cpuV: 1.425V
memV: 2.3V
NBV: 1.65
SBV: 1.6V

Ram timings: 6-6-6-18-6-42-15-15-15-15

9)
CPU Freq: 400
Mem Freq: 800
MemV: 2.3
CPU V: 1.4
FSB termination: 1.45
NB Vcore: 1.65
SB Vcore: 1.60

Ram timings: 5-5-5-15-5-42-13-13-13-13

still can't boot

At 6x multiplier:
settings:
CPU Freq: 400
Mem Freq: 800
MemV: 2.3
CPU V: 1.4
FSB termination: 1.45
NB Vcore: 1.65
SB Vcore: 1.60

Ram timings: 5-5-5-15-5-42-13-13-13-13

Can't boot.

then tried

CPU Freq: 400
Mem Freq: 800
MemV: 2.3
CPU V: 1.4
FSB termination: 1.45
NB Vcore: 1.65
SB Vcore: 1.60

Ram timings: 6-6-6-18-6-42-13-13-13-13

still can't.

then tried

CPU Freq: 400
Mem Freq: 800
MemV: 2.3
CPU V: 1.4
FSB termination: 1.45
NB Vcore: 1.65
SB Vcore: 1.60

Ram timings: 6-6-6-18-6-42-15-15-15-15

com become siao liao, the system speaker keep giving off beep beep beep beep beep beep sound


Can't manage to get the system past 2.8Ghz. Any advice or suggestions?

Why closed? I'm posting here because i've exhausted every possible solution i can think of.. Really tweak all the settings still unstable.. But if this thread really not allowed here then my apologies.

Anyway,
I heard ram: cpu 1:1 more stable. the other settings u mentioned, i tried before, doesn't work.

This post has been edited by FiSHjIGN: Dec 19 2006, 06:15 PM

U see, the problem is, at 399MHz, its perfectly stable! and once i increase by just 1mhz to 400Mhz, it can't boot at all. Puzzling me a lot.. I try tweak some more..

ICH i set to auto. tried the settings coolice gave, doesn't work. bios version latest, 0304. whats the use of max ICH voltage? i thought cpu o/cing is mainly related to NB Voltage

I think my RAM sticks holding me back.. these A-data 6400's seem like they have shitty o/cability. set to 6-6-6-18-6-42-15-15-15-15 then can o/c to 420fsb, but can't go higher than 430 without system being damn unstable