Good to see your back up and running. Guess the 212+ did mess with the memory chip somewhat if switching the memory to the correct slots fixed the issue. Maybe you'll get your 4.5ghz goal with some tweaking.
You might have to do some more tinkering around to get 4.5ghz stable. Sometimes just bumping up memory voltage a little bit will help. It's possible you may have to play around a little bit with other voltages also but it's a try and see thing as no 2 chips are created alike....Just similar.
It seems for some reason most of MB's are wired for 2nd and 4th slots from the cpu when running 2 chips. I'm thinking this started with S1156 as far as I remember. Most people complain about coolers blocking the first slot but run 2 sticks of memory anyways. For the most part whenever I look at a MB manual out of curiosity it shows the same thing....2nd and 4th slots for 2 sticks. I guess it relieves stress on the internal memory controller? Kinda makes me wonder how many users who struggle with their overclocks are using the wrong slots. I know filling up all 4 slots creates issues with the overclock but I'm wondering if just using the wrong 2 slots can somewhat create the same issue but just not as severe.
I only overclock for fun to see what my chip(s) can do not because I need the speed. It does look like Intel is taking all the fun out of it slowly but shurely. I was looking forward to Ivy but it turned out to be a flame thrower of a chip it looks like. No fun if you gotta somewhat destroy your chip by deliding it to play around at higher overclocks. I figure as time goes on it's only gonna get worse.
My 2550k is most likely the end of my overclocking adventure it looks like. Guess I'm lucky I somewhat won the silicone lottery with it at least as it's a beastly overclocker after one get's over the vcore fear and purchases the optional Intel protection plan just in case.
http://valid.canardpc.com/show_oc.php?id=2413478
Seems kinda extreme on the vcore but these chips are tougher than one would think. Guess you could destroy one if you try to push it beyond it's limit by forcing massive vcore thru it to make the next jump. The above was what it took to have enough stability to run cpumark99, superPI, and a couple of other benchmarks.
My 2550k running at 4.5ghz requires 1.3v's under heavy loads. Trying for lower overclocks on my MB is a struggle using offset vcore as I gotta go pretty deep in the - offsets to keep the vcore down. Currently playing around at 4.2ghz at 1.25v's to check stability....So far so good tho!
Getting ready to downgrade my rig to a 3225 running the onboard video as I don't game anymore anyways. Got the new rig already built just gotta swap in my SSD/HDD.
Sorry for ranting on and on and............