GuyBFF What's your input coolant temp to max temp difference?
My temp difference is far more than 5°C.
I have coolant temp of 14°C atm very stable as it is cooled by the underground temps. I'm using an overclockers hideout copper waterblock which I modified so the base area is less than 1mm thick, (this actually improved max load temps by 6°C), as it was 4.6mm thick. It is a 1 gig AxiaR @ 1596mhz 1.95v 145fsb. It idles always about 2°C above water temp, (16°C), and max load it gets to 35°C. so that's 21°C difference between coolant temp and max CPU load. I'm using Artic Silver II between the CPU and block and the sticker on the underside of the CPU is removed, the thermal diode bent so it contacts the centre of the ceramic also with a dob of Artic silver II on the tip.
I thought there was something wrong originally, but a friend also running similar low coolant temps with a 1.4 @ 1.6 gets a similar 22°C difference. Flow rate is not a problem because slowing the flow doesn't make it any hotter.
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