900mhz @ 1300CV thermal test w/ steady 5V supply. Warm loop running at 44C. Passively cooled voltage regulator is crying. No rad fan; silent. Untuned OC. #bitaxe #gamma #oc #overclock

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After tuning and rise in ambient temperature (took the photo in the morning), hash-rate is ~2TH/s @ 63C, still no radiator fans.

nice one

Added fan for this voltage regulator, adds some noise, but more stable.

How big is this cooling device?

8cm raditator

The liquid part looks huge

It's a 12v pump, with approx 30cm of 14mm OD PMMA hard line, and a waterblock made for a Northbridge with custom 3d printed mounts to fix the Bitaxe.

... And an 8cm radiator.