Originally Posted by Grandlo
I hear everyone saying that no more then 1.365 vcore for the 45 NM. They base their assumptions on the intel tech documents. in my mind! IMHO those figures are almost certainly conservative. engineering numbers ALWAYS are!(assuming the engineers are GOOD) They dont want to take the risk of RMA's due to non conservative figures. i've had e5200 at 4.1 vcore 24/7 but didn't run it long. it passed two days of prime and several passes of IBT. it really depends on you! what do you want? first make sure its stable as heck 48 hr testing then if it is and the temps are ok. why the hell not? you didn't buy extreme edition to be conservative right? I can vibe with you wanting 4.0ghz! it's just a number im working on for my q9550 and 3.985ghz just doesn't cut it!! lol
There is NOTHING conservative about extreme edition procs expensive as hell, overpriced imo but that's the attitude you got. and if I bought one i'd clock the hell out of it, provided stable.
ALSO !!! be sure to play with the REf voltages try .63 and .61! those are crucial for quad OC! i got mine at 1.33 VTT ref .61 4.0 ghz at vcore of 1.38. I needed to up my NB volts to 1.61! so you may need some massive NB volts to get stable at lower vcore. just a thought.
There are also other points of view which points to protecting your investment.
I've also seen tons of people go to 1.55 and higher clocks, but with water cooling.
In my view if you have wc and can keep your chip cool (less than 60 load), than up the clock and volts. but if you can't, you shouldn't stress it with not only heat but also other voltage related depredation. (unless its a cheap chip your oc'ing the hell out of)
Seriously whats the diff between 3.8 and 4.0.
Mine can do 4.0 at safe vcore, some poeple can do 4.0 at even lower i've seen (which i'm jealous off). If you don't like the speed at a safe voltage, take rob's advice: sell it and buy a q9650 for the same price.