Ya, well i tend to upgrade in staggered ways. I don't want to do a low buck upgrade to a 1700+ because it would be more cost effective to upgrade th moboard to a high quality unit and use that as a bases for future cpus. Performance wise 1700+ realy isn't all that much better then the thunderbird, I'd rather make the jump to 3200+ in a few months.
Oh right now I am thinking I will be hitting up a emermax 350w unit with the 2 fans, however nothing is set in stone.
For the heatsink I am thinking that I am aiming towards a homemade water block and car heater core. I want to use it more for the silence factor then improving the heat sink capabilities over a air cooled, but I plan to make it good. Currently my idea involves a twist on the old idea of a large copper pipe end-cap soldered to copper bar stock that has been lapped flat. The main variation is that I a oxy/acytenline welder so I am going to braze a copper/brass plug to the top of the bar stock effectively making it one peice of copper. The cool water will be forced down from the top of the copper cap and be forced down flowing over the bolt (which will be one with the copper base plate not soldered and have a nice threaded texture for nice tumbling effect). The openning of the outlet will be close to the plate and will suck the hottest water from the bottom...
You see it'll be a kinda heat "spike" going up into the cold water channel, so that water will have maximum flow contact with the base plate before it is evacuated by the water pump. I may or may not dig channels in to the base plate have the outlet suck water from that instead of just hovering above the base plate. Hopefully with having to open water design with the extra large bolt it would create a nice enough mass that a pump failure won't fry my cpu. I have a nice copper heatsink right now, but the case is crap so dust is a problem. My computer began crashing and It turned out that a mat of dust formed between the fan and the tightly spaced fins of the copper heatsink. It actually came out in a big square mat of dust, almost looked like somebody took a towel, cut it perfectly square and stuck it on the heatsink. Like a clothes drier's lint trap.
The case will be a generic "rackmount" style. I picked it so I could save a bit of space on my desktop by putting it underneath my monitor, doubling as a stand. Plus since it is horizontal instead of verticle I don't have to get a super-expensive pump to have high flow. Another good thing is that the inlet fan is filtered so i don't have to fight the dust bunnies. Another reason for water cooling is so I can seal up the box well and keep it clean with out having a heat build up in the case. One large inlet in the front, one small outlet in the back, plus the 2 fan set up on the power supply, I will probably have the rad in a small box (tupperware more than likely) with the pump and resevoir outside the case, with some undervolted fans on openings in the front and/or back creating wind tunnel effect, but still be quiet. maybe put some quick disconnect/water proof fittings on the side of the case were the tubes for the water have to pas thru, so i can move it easily without introducing air into the system.