Q6600 @3.8 game stable want 4

The difference in performance between 3.8Ghz and 4 Ghz will be barely noticable, other that to say you have it at 4Ghz, what benefit would you get from it!

68-72 is a little hot for my liking for daily load use, and this will only go up at 4Ghz,

Most peeps say up to 1.45v is safe on those chips, I would prefer to run 3.4/3.6Ghz at 1.35 V and get 95+ % of the performance (Still a major improvement over stock) than run hot and power hungry over Intel Stock high Volts.

But yes Turn V up to 1.45 and you should make 4Ghz allright, think it will be to hot load though!

Nice work with your memory settings though.

(Side Note, 500Mhz on FSB is close to limit on p45 running Quad core, Much easier t get 500+ fsb on dual core, I ran p45 Asus Pro with e7200 510FSB but could not get over 480 with q8400 nice board if it is stable there)

I could never get stability in the 400+ range as I tried to go past 3.6 on a 9 multi. Always would pop a rounding error on core 3 or 4, despite anything I tried w/volts... including gtlrefs. Went to 8 multi and haven't had any issues. 475 is pretty high on a 780i, me thinks... but I'm still holding a 1.3v fsb and am under 1.5vcore. It can crack into the 70s but, since this is my last planned year on a now 4+ year old system... I figured I'd crack the whip. I'm at 4-4-4-12 timings on the ram, unlinked @ ~833. Can't remember the advanced timings but they're rather tight. Would have love to have linked/synced but it just wasn't meant to be I guess. I don't know how many hours I tried 9 multiplier going over 400 fsb. Dozens probably. Just never could get it to work. Stuck it to 8, dialed 475 expecting it to not post w/1.5 vcore and it just worked... then was able to dial the vcore back down a bit. Worst thing that happens is... well... it all dies and I have to buy a SB setup. Still have a 680i sitting around collecting dust if the board dies...

I'll let prime run an hour and so long as I'm not popping rounding errors, I'm fairly happy. One of these days, I might walk away from it for a day and see. Just too impatient to not try something else or play games and such while primes doing it's thing. Since I don't do any encoding/folding/etc...

I swapped to one of those Xigmatek DKs from a AC7 I had for years. Man! I'll never touch a push pin again. That and that awful 92mm fan.

BTW... see that TRS-80 in your sig jsc. That was my first computer when I was a wee lad. I can hear the sound of it booting in my head to this day. Radio Shack... double stacked floppies.. integrated keyboard...

And it took 2 redesigns to get the expansion interface right, and by then the Model III was out. I took a different approach. I built my own expansion interface.

Best answer selected by spentshells.

I didn't get to 4GHZ it isn't happening.

Not surprised. 4.0 is a real stretch for an E0 Q9550 or Q9650.