Sorry I haven't gotten back to you...The only thing that I worry about with the Overture case is where the pump will go...You see how it mounts in my SM case, but that case is a mid-tower case. The pump can't be turned anyother way, so you may have to mod it a little to make it sit upright. I'll give you assistance on that matter. My CPU was always around 45+C, but a P4 runs much cooler than an overclocked AMD XP processor, so you should expect 35+C. I'll send you a bottle of green UV reactant, but if you don't have a case with a window, then you don't have to use it because you won't be able to see it.