TEC help needed.

[Vinas]

im using an iwaki RD30. one of the best pumps with the highest flow available.

Yeah, sorry I didn't read that you have the iwaki and they are great pumps.

Back to the problem, perhaps your block can't transfer enough heat to the coolant? Do you happen to have an IR thermometer? Some how we need inlet and outlet temps from your block... Maybe even a cold and hot side reading from the TEC? Finally after that we can narrow down the issue. I'm afraid I can't really help unless you can provide some numbers for us.

If the block ends up being the issue you could use a hotplate with two water blocks. Not that you'd want to, but it's been done by others.

EDIT: I was thinking your chip is fine at 1.45vcore because I run mine at 1.58 just fine. I have the e8400 and a 245watt 12v TEC, specs in my sig but pretty close to yours. My heatercore has 4 scythe ultra kaze ~130cfm fans on it. Orthos stays well under 60C after hours of benching and my heatercore pours out heat.