Have had my Costa Rica 3770K since mid November iirc. It's batch 3222B508.
Been running it at 4.3Ghz with 1.160v (multimeter 1.155v) for a long time. Been rock solid in literally everything. Except temps have bothered me.
So I de-lidded it today, put some Liquid Pro between the IHS and the die. Between cooler and the IHS I put MX-2.
Clocks as above and before temps in IBT 71-80-77-72 -> average 75*C to after temps in IBT 55-63-61-58 -> average 59.25*C, average drop of 15.75*C, with hottest core dropping an interesting 17*C
Now I'm running 4.5Ghz with 1.190v (multimeter 1.186v)
Have no idea how stable it is right now. Gotta watch some movies, browse the internet, encode some crap in Handbrake and so on.
Right now it's cooled by TR True Spirit with Gentle Typhoon 1850rpm and will probably be going to 4.8Ghz or 5.0Ghz when I get better cooling (probably in the form of NH-U14S)
What I know is that 4.8 requires roughly 1.35v and 5.0 something like 1.4, it was just quick 'n' dirty testing to see how it goes.
But anyway. I like this chip. Also the above temps and the screenshot were with the fans spinning at full speed and ambient between 23-24*C.
E: Well how about I go and encode my .mkv 1920 backup (_full_ backup..) of my Iron Man bluray disc to 1280 CRF16 in Handbrake and post here if it fails.
Should take roughly three hours.
E2: Well was getting some random WHEA errors so after playing a bit with the voltages 1.200v (multimeter 1.196v) is WHEA error free now.
Was already suspecting my ram voltage to be the issue but doesn't seem like it since I've been lowering it back down step by step.Edited by lagittaja - 5/9/13 at 2:53pm