I recently installed an amd 64 4000+ and overclocked to around 2.75 ghz by upping the cpu voltage, decreasing the memory to 333mhz, and changing the fsb to 230. Anything higher than 230, then my pc cant boot since the memory cant handle it. Ive read that people also change the HT from 5X to 4X. Will this allow me to change my fsb higher? Will 4X HT make my system slower? thanks.

I'm having a similar problem. One reason ur pc wont boot is probably because ur HTT is 5x230 which is 1150mhz! It should never really be over 1000! lower your HTT to 4x as 4x230 920mhz. It's lower but you will see better performance at 2.75ghz. What i don't understand is my Ram is DDR400 so technically it should run at 400mhz but wen i change it to DDR333 and overclock (atm its at 2.71ghz on my 3700+ sandy) i cannot get the ram back up2 200mhz, it can't go past 194mhz so its still DDR333. Whats the problem, has my mobo reached its limit or my ram or what?

hey guys
im thinking your both talking bout the 939 4000+ ? . if knot im sorry bout this post .

i have the same chip 4000+ sandy and a dfi mb .. and i have to say this is the best chip ive ever oc 'ed
ive allways gotten to at least 3.0 with this chip heres some screens



i run this at 2.7 for everyday stuff but run it up to 3.0 or 3.2 just to bench mark

i think you must have good ram and a stable power supply before anyone even thinks of over clocking there pc..

In OC formula everything are affected. Memory speed too, so when your FSB are up your memory speed too. So is equal to HT Link, you need to slow down your memory speed too, because final resault never pass in HT Link = 1000 mhz and in your case memory speed 400 mhz. OK 194 mhz x 2 = 388 mhz nearly 400 mhz, you can go further if your memory are good quality low latency like 2-2-2-5 because you need to ramp up memory voltage some time a little.

For 3000 mhz you need to put your HT Link = 4x FSB = 250 but importanly memory speed slow down to 166 and CPU voltage ramp up to maybe around 1.40v or little more.