well, even with a TRUE with 2*1800rpm fans, plus another 120mm blowing air towards it and another pulling it out of the case at the back, I'm still pushing my Q9650 to 80C or more. I don't think any more vtt would help the situation... I've seen the right side of 4.5GHz but I won't see it stable. It's 35C outside and about 26C in my room. Too hot to do battle...