Hello to all! new here, but not to overclocking (been oc'ing since the pentium 200mmx days lol). I have been having a weird issue while trying to clock my 550 be. It does 3.6 stable just by bumping the multi to 18x. Nothing else needed. It is also stable at the same 3.6 oc with 2800mhz NB with a +.300 NB-VID voltage bump. Temps are actually pretty good(20-23 idle and 38-40 max) for the stock cooler, but my ambient is pretty low too at ~18-20c. The problem is that nothing over that is stable. I can get to the desktop at 3910 (200x19.5 1.5vcore and various other settings using multi and fsb as well as bumping the NB, and ram voltages too) but it always crashes after a short while. It would seem that being able to get 3.6 without bumping the voltage would leave some headroom. This wont even do 3.7 stable all the way up to 1.5v(in .025 increments). The part thats really confusing is I always get the same sort of crash, but it's not lockups or bsod's-- it looks exactly like a gpu crash with the screen flashing vertical lines and changing colors. Only, my gpu is at default stock settings (catalyst 9.12 drivers).
I know the board can handle high fsb settings. Before I got the 550 I had it running a nice smooth 50% oc with an X2 4050e(2.1 stock)@3.15ghz 1.39vcore and 300fsb with .1 bump to the NB 24/7 stable.
Maybe it's because the board(ma-GA78GM-US2H RV1) is technically not an Am3 board?
Maybe it some catalyst driver issue?
I thought about removing the discrete gpu (HD5770) and trying with the onboard, but that seemed kinda pointless since I also use this rig for gaming.
Running a fresh install of win7x64 if that makes any difference. Also tried it with xp and got the same results, if not a little worse.
Thanks in advance for any help.
Oh and btw: yes I know that stock cooling isn't the best but On all my attempts to run stability tests the temp barely reached 50c at 1.5vcore (most of the time it wasn't even at 43c 1.44 vcore) after half an hour or more. Then always the same vertical lines crash with whole screen changing colors.
1. It might be your CPU limit. My 550be went to 3.85 GHz and nothing above. And i t5ried everything.......
2. Stock cooling ?!!?! As far as i know it's not wise to go above 3.5 - 3.6 with stock. Get an aftermarket cooler.
3. Overclocking is more stable in x86 systems So you might want to drop x64 and go for x86.
4. Are you sure that are your real temps !? Cause they seem low .......