phenom x3 8650 overclocking problem...:(

[computerlab]

my cuz recently bought a budget amd rig with phenom x3 8650 and asus m2n68am plus...ram is corsair xms2 800mhz...

board's bios has an option to overclock by increasing fsb in 1mhz steps..and bios says that u just enter the fsb u want everythjing else will be auto adjusted..
and my problem am not able to get over 220mhz fsb(200 default)
it boots at like 218mhz and says"overclocking failed" at 220mhz..i lowered the multiplier to 9(11.5 default) to check whether heating is a problem but no,still not booting..i lowered the ram frequency to 667mhz and increased its voltage to see whether ram is a problem still not booting...
i even increased the processor voltage by .05v but still NOT BOOTING...

plz help me out guys here...i really dont get it what the heck is goin on in here...
m here for any kind of queries

 

[BUCK NASTY]

I have a 8650 also and it's a bitch to try to OC. Your board may be limiting you severely. Have you dropped the HT ratio?

 

[computerlab]

i dont think so...how to do that..??
and i dint actually see any option in my bios for that..

 

[BUCK NASTY]

Found this:

Basically with Phenom, you would have to keep the following equations in mind:

* CPU Frequency = CPU Multiplier x FSB Frequency
* HT Frequency = HT Multiplier x FSB Frequency
* NB Frequency = NB Multiplier x FSB Frequency
* Memory Frequency = Memory Divider x FSB Frequency


Overclocking

The stock Vcore on the AMD Phenom 8750 Tri-Core we received was 1.15V, but I had to push it to 1.37V in order to get the system stable at 3GHz.

We came very, very close to achieving a stable 3.12GHz overclock; and it may in fact be possible to run at that speed, however I was not willing to push the Vcore beyond 1.45V. Really, the only thing I had to do in order to overclock to 3GHz was to increase the "FSB" to 250MHz, and drop the HT multiplier to 7. The memory controller could use some better BIOS support, as most of the problems I encountered were with trying to run the memory at faster than about 850MHz at 4-4-4-12 timing, or faster than 1000MHz at 5-5-5-15 timing - and I was using PC8888 memory, rated for 1100MHz operation.

To get the system to run at 3GHz, we:

* used a Noctua 12 cooler
* set Vcore to 1.37V
* set Vram to 2.1V
* disabled spread spectrum
* dropped the HT multiplier to 7
* left the processor multiplier at 12
* set the processor clock speed to 250MHz

 

[computerlab]

thanks man..i'm gonna try it now and tell ya wat happens..

 

[mudkip]

I just build a rig for a friend.

X3 8650 / Gigabyte GA-MA78GM-US2H / 4GB OCZ Titanium 800Mhz

Raised the bus speed to 226 = 2,6Ghz , voltage auto 1.246v , tested with amd overdrive , 100% stable.

Not that hard? First AMD I've overclocked and it was easier than I thought