There is only one way to find out, mate.
In theory, if your chip is even somewhat decent, you will have no trouble doing so.
Start overclocking in bigger steps at first, then stress test each time while monitoring the temperatures. Prime95
(x86 version here
) should suffice in terms of temperature output. My recommendation about the temperature monitor would be RealTemp
If this is your first time overclock, I'd suggest reading up a bit before attempting anything, just to be on the safe side.
Or if you need an overclocking guide concerning this rig, I'd recommend reading through a couple of topics:Phenom II Overclocking guideSuper extensive knowledge base thread.*external source: Wikipedia* Information regarding the RAM timings
tl;dr version -
Your CPU multiplier is locked. This means you can OC via FSB clock.
If you want to find out the maximum potential and set up an environment that suits you, I'll try to establish some major key points:
- Find out your maximum FSB.
Lower CPU multiplier a lot - set it to near the bare minimum would be my recommendation. Lower RAM multiplier (thus underclocking the RAM as well). Increase FSB by 5MHz until you can't boot. Increase FSB voltage. If you get stable, raise again. Repeat last steps with smaller increments until adding voltage won't stabilize the system. That is your maximum FSB.
Keep note that for a potentially more stable overclock, I'd reckon dropping down 1-2MHz from your top clock and setting current to minimum stable for that bus frequency.
*also keep note that sometimes you need to adjust the HT Link (HyperTransport) multiplier to run around the default 2000MHz. HT Link Multiplier * FSB = Effective HTLink frequency, since it represents the speed that the CPU communicates with the other components at.
- Find out your maximum CPU clock.
Raise CPU multiplier again, lower RAM ratio, set default FSB. Proceed with raising FSB frequency until CPU becomes unstable. Add VCore. Rinse and repeat until you reach out of your comfortable temperature zone or adding three incremental VCore steps won't stabilize the CPU.
*keep in mind adjusting the HT Link frequency accordingly.
- Find out your maximum RAM clock.
Leave CPU multi to minimum. Set default memory ratio, proceed with raising FSB. When the RAM gets unstable, two scenarios:
- being still far away from maximum FSB - reduce RAM:CPU ratio, proceed raising FSB
- being a couple of tens of MHz near maximum FSB - fine tune RAM (raise voltage, loosen up timings)
Make your choice between the two until you get a satisfactory RAM speed with timings you see fit.and FSB (ultimately) as close as possible to the maximum your CPU will run stable at.
What I'd suggest is keeping a spreadsheet of the three main component speeds and their maximum values and by the end of all the individual tuning, you should be able to set up an optimal environment between the three which would, hopefully, run stable. If not - lower FSB a notch (if any further adjustments are available/necessary, do so (i.e. RAM timings, HT Link speed, lowering voltages).
Your goal, obviously:
Running FSB as high as possible while the CPU is stable and RAM speed as high as possible with as tight clock cycles as possible. Lower voltages to the minimum required for stability.
(Someone please correct me if I'm wrong, but I believe in terms of real-world performance, rounding up RAM at a 1 clock cycle less / speaking of CAS, tRCD, tRP/ would equal a gain of about 10-13MHz speed increase?)N.B.
I haven't done this in a while, so if anyone notices anything wrong, please post right away and I will, too, take note.
P.S. Welcome to OCN! And also don't feel discouraged to use the search function. Edited by fragamemnon - 5/30/13 at 11:31pm