I want to OC my Phenom II X6 1100T (6 x 3.3 ghz stock), I'm running a Asus Crosshair IV Formula Board. CPU, NB & SB all water-cooled.
Now I'm quite new to OC'ing, I've already read some stuff though. But it seems I'm doing something wrong, because I can't get the slightes OC. When I searched around for results, it seemed like people got their 1100T to 3.8+ Ghz EASILY just by raising the multi and cpu voltage to 1.4 - 1.45.
However when I set the Voltage to 1.4, I can't even raise the multi from its default 16.5 to say 18. (I'm not touching the CPU clock speed)
I can't even boot, get "Overclocking failed" Message all the time and have to reset to bios defaults. It can't be the temps, as I said the whole board and CPU is water-cooled.
I must have missed something.. I know OC results differ, but I won't accept that I can't OC it the slightest, after all this board is designed for OC, and temps shouldn't be the problem.. I didn't find any guide specifically using my board. I don't really know what to leave set at "AUTO" and what I have to setup manually, and to what values. I guess I need a detailed guide specifically on my board, because some settings must be wrong
Have you tried AMD OverDrive software for OC? if not give it a try, I got my 1100T on GA-890FXA-UD7 past 3.8Ghz easely in some minutes. Then changed bios settings got it to 4.2 Ghz, although later returned to 3.8 Ghz (cause somehow rising voltage to 1.53 V to get 4.2 Ghz seems to me result badly on CPU longlivity, but I may be wrong I am no pro) I also don't think its motherbord issue, my collegue owns same bord as you and it goes OC smooth. IMHO you most likely have made some mistakes in bios settings, so if you aren't quite sure about what you are doing in bios, then try AMD OverDrive.
One more thing, check in BIOS for Anti-Surge/Anti-Spike, when I left mine on I got many false messages of a surge most likely due to the increase in voltage. I turned this off and didn't seem to struggle. Would anyone care to disagree or agree about this as it worked for me but it seems that recommending to someone else feels dicey!
I took some shots of the BIOS settings so you can check if everything's fine.
Most of the stuff is default, however I already did change some things:
- Changed AI OVerclock Tuner from AUTO to MANUAL
- Changed AMD Turbo Core Technology from ENABLED to DISABLED
- Changed DRAM Frequency from AUTO to 1333Mhz (That's what my RAMs are)
Also, I raised the multi to 18 now, resulting in 3.6 ghz. So this is what it looks like now:
(Quick question: I left CPU/NB Frequency and HT Link Speed at AUTO, as I don't know what values I should have / what they have by default)
Ok so after I raised the multiplier to 18, I did a reboot and entered BIOS again to see what voltages it set up, because I've left all the voltages at AUTO for now. Here are the values:
And these are my RAM settings as they are by default:
What I find strange is that my RAM's are labelled 7-7-7-24 @1.5 V, so why is it setup to 9-9-9-24? Should I change that to 7-7-7-24 or might that also result in instability?
Anways. It booted and I'm in windows, and it's showing me 3.61 Ghz there too, so OC worked. However, I just ran Prime95 Blend Test, and after only 5 seconds (!) one worker thread hat a fatal rounding error.. So I guess that means it's not stable?
I've managed to get to 4Ghz by raising the multi to 20, vCPU = 1.4 and vCPU-NB = 1.2. Haven't done serious stressing though, just half an hour of prime and a bit of gaming.
I think I know now why my previous attempts didn't work: I've told you that my RAM is 7-7-7-24, but for some reason in BIOS it is set to 9-9-9-24. My fault I guess was that I edited that to 7-7-7-24, and that's why I couldn't OC cause the RAM don't seem to be able to manage that. As long as I leave it the timing at 9, I get great results OCing the CPU.
However, I'm wondering if this is supposed to be like that? I.e. is it even wise to OC the CPU instead of lowering the RAM timings? Or would 7-7-7-24 @3.3 Ghz CPU be better overall-performance in games than 9-9-9-24 @4 Ghz CPU?
It seems a bit strange to me that it's set to 9 by default, as the RAMs are supposed to be 7-7-7-24.
So what do you think? Everything ok here, or should I set my RAMS to 7 first and then start off again?
Great board and Cpu,had 2 of them previously,all I did was upped the multiplyer to 20(3.9Ghz) and that was it,Now I was running 1600 ram(kingston and then Gskill)What exact ram do you have?cause then as now all my ram runs at 9-9-9-24(or was it 27)now with Gskill there is a thread on there forums to bump up the NB memory by .01V with an AMD CPU.
now with my sabertooth 990FX and 1100T,same,only uped the multiplyer and 4.0G,I have never added voltages and they have all run stable.
now with that being said,not all CPU's will OC the same.