With stock the way it is, my advice is to just go ahead and place your order.  If he can't fulfill it, he'll refund you, but at least your spot will be reserved.  I sent him some BTC a few weeks ago when BitMain messed up, and he refunded it promptly when he couldn't fulfill.

PM sent

I don't have any doubts about the OP. I should have been a little more clear. Based on the thread and people's responses (Hey philipma1957), I'd have no problem sending for an order. However, it is my opinion that a confirmation of remaining inventory is something easy to do and something that I'd rather wait for before ordering.

Aye, but I imagine he'll give priority to those who've already paid him.

Difference between U2 and U1 ?

well there is a resistor which would allow for a tiny bit more  volts if swapped.  

with that big heat sink I am thinking they could clock to 2.2 or 2.4 if they switched that resistor.  if the new batch coming in a bit cost 15 btc for 500 sticks and clocks to 2.4gh with that nice big heat sink it would put a bigger hurt on any and all fury sticks.

Agreed, never had problems with heat on these guys.  That said, if this model allows for more overclocking abilities, the heat sink may be justified.

with the 19 port stud hubs  you can fit and run 16 easy.


https://bt.irlbtc.com/view/418087.0

so if the stick has a voltage mod with the resister I am thinking you can push 2.4 to 2.8 on this hub.

price is .03 a stick about 18 usd if yyou buy in bulk.  now this mod means you must have a really good hub .   but since I have no idea if the resistor was changed it is all guess work

I run these overclocked to 2 ghs (clock=x0981). Do these run stable at higher overclock to 2.2?

no 2.0 is easy . 2.2 is meh lots of errors only some do it. overheat easy .

they want a voltage boost to go above 2.0 .  so bigger heat sink different resistor  more power needed.

 the chips are in a s-1  64 chips do 180th.  that is 2.8125 gh .  with fans and all other parts an s-1 will do 180gh at 360 watts   .  that is about 5.6 watts a chip . at the k watt meter.   when I over clock u-1's to 2 gh I pull about 3.2 watts at the k watt meter.

  you would need a really good hub . I believe the 19 port hubs give close to 3.75 watts at the port which may be 4.7 watts at the k meter.

translation even a really good hub may only let you go to 2.4gh on the new stick