The boards that we received are running quite hot, and I decided that we cannot sell them without heatsinks.
Q1: Can they be undervolted to prevent overheating and add the heatsink later ?Yes, the pot enables you to set the voltage anywhere between ~0.65 to over 1V
Do you think it's a good idea to do preorders on this new hardware or should I list it on the site when they're ready to ship?
Pre-order is fine, you have earned my(and probably a lot of others) trust.If you add them to the shop, and if the answer to Q1 is yes, can you please also add them without heatsink for a slightly lower price. [ I would add a clear warning that they come as is (no guarantee) and require undervolting or forced cooling and a heatsink ].
Well.. I'm not sure how well this will work out.. I'm afraid people will run them too hot, ruin them, then cry RMA and demand replacement
Also, I don't think people will be too happy if I remove all warranties and will potentially create very angry and bitter customers when the new card suddenly doesn't work (sometimes this happens even if we test them) and we don't replace it due to this new policy.. I need to think about this..