Help overclocking my ocuk bundle

[chrismcca]

hey guys, i have read the articles on overclocking etc but i still need help.
I purchased a bundle from ocuk a while ago consisting of:

processor: AMD athlon 64 x2 4600+
mobo: ASUS M2N4-SLI
ram: 2x1Gb corsair pc2-6400

my power supply is from coolermaster 380W
i have a big typhoon cpu cooler
i have a fan blowing over my chipset as it is fanless on this mobo and 2 case fans. i also have a x1950 pro graphics card installed in pci-e slot

in my bios i have control over fsb, cpu multiplier, HT multiplier, the type of ram( which in turn affects its divider with some ratio i have yet to understand) and i have control over cpu and ram voltages.

Basicaly i have been able to achieve very minimal overclocks but there after encured instability while stress testing, boot failures or crash/ instability during boot - so what im looking for is some idea of what is achievable with this set up or pointers as to what is goin wrong (perhaps lack of power form that power supply etc?)

any feedback is appreciated and i will try fill in any queries with more info on what iv prob left out form above,

cheers, chris

 

[thefishdude]

hmm not had experience with that set up but. but allways start at the basics. ie fsb only try uppping it in stages . and testing it as you go. one thing to keep an eye os the ram speed. as you increase the fsb to the cpu soo the speed of the ram will increase unless you change the divider

the ratios are used to work out the speed your ram will be rumming at. soo for example
with the ratio 1:1 you divide the fsb by 1 then multiply by 1 then double it for ddr2.
if the ratio was 2:3 you would divide fsb by 2 then mulitiply by 3 then double it for ddr2 speed/

basically you dividee the the fsb by the first number multiply it by the second and them double it for ddr2.

it may well be the ram that is causing the instability and not the cpu overclock. another thing to check is the ram voltage a lot of mobos default ram voltage to 1.8v were as good ram like you have is often recomended to be run on more. it should say on the packet it came in. not enough voltage to the ram will cause instability especially as you make it run faster.

these are *** basics i only do basic overclocking lol

 

[iraiguana]

drop the ht multi down from 5x to 4x or even 3x. This just causes problems when maxed. The hyper transport speed is not really a big factor if its 4x or 3x.

Then bump the voltage up a few times and see what it can do.