I'll play around with the overclocking today, take a bit of time to just enjoy the fact that the hard part is done now though
as for that controller, if you were handy with a soldering iron I'm pretty sure you could desolder that single 20A mosfet and run wires for the gate, source n drain to another PCB and populate it with more mosfets for more amps, might need a mosfet driver as well, and also there might be some over current protection built into the controller so it may not work, still for a single TEC direct die I'd say its the best possible solution without doing something custom.
I've been monitoring things today, I didn't change the wires on the TEC, left about 150mm of 20awg, they don;t even get warm when I'm stress testing at 4.4ghz, so I think this controller is probably still only applying about 50% duty cycle, if that. Everything else seems good, I put my GPU in and hooked up the third radiator fan, put a little PWM fan on the controller for the mosfet heatsink.
As for the insulation, LET was an absolute nightmare, and with the art eraser I'm not sure that the LET is necessary anyway. I think art eraser, vaseline and neoprene or closed cell foam is all it needs, I put layers and layers of neoprene around the socket and on the water block so it's basically an air tight seal in there now, it all squished up nicely when I bolted the TEC down, and it appears as though the mounting pressure has sorted out my thermal paste issues with the thermal grizzly, I'll find out when I try to run 1.4v+ through the CPU, if the TIM is too thick on each side of the TEC I'm sure I'll see some larger deltas that will let me know if I need to redo it. The CLU on the die and on the IHS seems to be doing the job perfectly at transferring heat to the cold plate. Time to ramp up the speed a bit
I suppose I better start my own thread now hahaha, sorry for the hijack, I know you like reading about any TEC stuff anyways, got something decent to post now though.
Man that would have been a sweet deal on those xeons, I rarely find anything for a good price here in Australia. I kinda like playing the lottery with CPU's, try to take every chip to its max, see if thats enough, the only chip I've bought more than 1 of is these G3258's, everything else has been one and done haha. I hope yours is a good clocker though, it's worth finding a good clocker when you can run higher volts under TEC cooling.