Originally Posted by richierich1212
I have the same cooler, mobo and case as you. But I tried those settings and my computer crashes under load. Should I tried ganged mode? How much voltage did you put for your RAM, HT or NB? And how is your NB frequency so high?
With overclocking, you really can't expect the settings that worked for one person to work for another, even given the same components. Even chips from the same waffer can differ (i.e. the ones on the inside tend to oc better) let alone processor family. That said, sometimes it is useful to see what someone can achieve given your components, and aim to see if it would work for you. Moving past that, you have temperatures (cooling methods, country of residence etc) and different steppings/revisions of the same product.
However, the answer as to why its stable for him and not for you is a lot more complicated, and in practice you may never find out. Now, to answer some of your questions!
1) Unganged mode tends to be better, and for me it definitely was. There are times when ganged mode is better, but usually these situations are pretty rare. In the end, you will have to test which works best for you to determine the mode to set - for most people however (and with multi-threaded applications) unganged works better. Edit: to provide a better definition, I googled up 'ganged vs unganged':
The Phenom has two memory controllers on the CPU. Ganged is setting both memory controllers to work together which allows data (that is being used by all cores) to await on the queue until they are accessed. Unganging means that the two controllers work independently. This allows them to work asynchronously with reference to individual clocks with their one or two Dimms. I would set your Quad Core to unganged.
I would set the DRAM to 800Mhz with 4-4-4-12 as you are populating all four DRAM slots with 1066Mhz DRAM. This will bring you a better stability with that system.
2) The amount of voltage that you can safely apply to your ram differs from module to module. Generally it's best to find the rated voltages your ram is specified to run at, and then applying .1v if you feel that you should. It should be easy to find on your manufacturer's website. It's almost universally accepted that increasing your ram by .1v should do absolutely no harm. This is not always the case however.
3) Certain chips and mobo/processor configurations allow for different NB frequency clocks. Some chips may be able to hit a very high cpu frequency, but may only be able to hit a very low NB clock. Upping the NB-CPU vid (and also the NB voltage for your motherboard, if thats the issue) can help you maintain stability at higher clocks. It's important to note that if you change either, its similar to the cpu vcore; you need to check and monitor temps to ensure it's safe.
Finally, if you can tell us how/why you crashed, it could help us figure out what is causing it as well! Hopefully this rambling was useful, and good luck on your oc!Edited by Drin - 2/6/09 at 3:59pm