So be patiend as I will continue to add on and edit...
1. The CPU defaults (or stock speed) is 200 MHz. You won't see the "MHz" after speeds in the rest of the post...
2. The RAM defraults at 200 also.
The CPU OC will effect the RAMs speed.
Not knowing what RAM you have complicates things for us ot advise you.
Anyway, the CPU OCing effects two relative but different RAM speeds!
1. The base speed rating like in the DDR2 800
That can increase with the CPU OC to the point of causing instability and may require changes in thew default speed, the voltage to the RAM or RAM timings.. kind of deep but not to important yet
2. The RAMs overall HT speed
The HT of the RAM default is 200x5
for an overall of 1000.
So, the "5
" can be reduced to 4
. You want to reduce the HT multiplyer to keep the overall HT undet about 1000 but it may be able to run as high as 1200ish and not cause instability. Note: Do not confuse those with the CPU's multiplyer!
A basic ...
Lets say you increase the CPU speed to 250.
1. You may need to set the RAM to DDR2 667
2. You may need to reduce the HT multiplyer to 4x
( likely will for stability)
THE HT or Memory Controler may als have aan option to increase voltage.
Things that may help...
1. Increace the CPU voltage 1 incriment at a time.
2. TEST with OCCT or Orthos for both stability and full load CPU temps. DO NOT excede the low 50c range under full load!
3. Thew RAM may like some extra voltage too to run at higher speeds or fdore stability... but again no clue on what you have.
4. There aree "Chip Set" voltage increases that to may improve the OC and stability... some BIOS have "NB" or "SB" in the referance to them.
The most important things to remember arr...
Move up[ slowly with the CPU speed increases and any voltage increase
WATCH your FULL load temp of th CPU!