Quote Originally Posted by Daveburt714 View Post
Hi Folks,

I know I've been kind of quiet lately, just haven't had any killer results to report...

I see the Vcore some of you folks are running and my chip just doesn't seem to like anything much higher than 1.5v, believe me, I'VE TRIED.

I've been on my "Ugly Water" the last few days and have never seen temps over 50c, so I'm pretty sure it's not a temp problem.
It's not all a bad thing, this chip will do 4Ghz easy (@1.475) which makes it a killer air chip but I was hoping for a little more with water and voltage...

I'm certainly NOT complaining!
I'll play with the IMC a little more tonight, maybe that will help me get more on the core without adding v's....

I did notice my Mobo NB and PWM section getting REALLY hot since I went to water, so I added an Antec "Spot Cool" over the PWM heatsink tonight.

I'd really like to get 4.1/2.7 stable. I think it's doable...

If I get it I'll post some screenies.

BTW: I'm doing this on ambient w/water, I got tired of shivering (hehe).

I fried my 940 @ 1.42 a few nights ago, so be careful what you ask for my friend.

These parts are relatively low leakage and efficient. So they are working well on H20 & agressive air and are showing nice scaling in the 35C to -20C range and beyond. I am suprised by the (relative) consistency and goodness of the results. They are not particularly voltage tollerant without substantially decreasing temperature. Phenom II scales like none before with cold, but I offer some perspective, we can (sometimes) get to 1.8V at -260C. So between 50C/1.35V and -260C/1.8V you've got a voltage tollerance line, more or less, and certainly always on the edge of failure.

People seem to think the Crosshair has an edge driving core frequency. Also, I think big radiators and airflow help. But you already know this.