This is a cool idea, and I love its low price. I just don't know how the chip could be cooled though. I can keep FX at 1.7 Vcore below 0c max core temp very easy 24/7 with nothing fancy, 500w is not exactly difficult to cool. This chip however... Wow, I really don't think a single stage would be enough, I think you'd honestly have to move to cascade (even including the internationally banned Freon gases, I don't think anything less than a 3 HP compressor would cut it, and even then you might hit above 0c). Its really cool board as well, as I love the behemoth VRM, and I have nothing against duel PSU (my main system is TR with 4x Fury, so obviously I run 2x SuperNova 1300s since they are dirt cheap).
Cool concept, but too difficult for normal people to actually run well since they don't have extreme coolers, and (joking, I think this thing would start blowing liquid nitrogen out of the cup if you really cranked it). You really would go through a ton of LN2 per week (I do mean literally over 2000 pounds, probably around 100 hour mark, or 4 days full operation assuming it burns 10L/hour of LN2). That would be absolute madness to try to do... Also extremely expensive. You'd definitely just want triple stage at that point, your cooler after a couple weeks would pay for itself!
I don't care about the electric bill, but my goodness, I don't have access to that much LN2 or no someone that can make a monster cascade for $5k (or even more, I flat out don't know any custom builders). Power is never a big concern for me, but heat density is, that thing would be like cooling a small sun.
Spread it out with 4 GPUs, and that's fine, but on 1 chip? Ludicrous! (hence I love it)
4x R9 Fury on water driving 3x 4k monitors
TR 1950x at 4.15 Ghz (120mm AIO)
32 GB in quad channel at 3600 Mhz
2x SuperNova 1300
10x MagLev, 5x duel stage Sunon 40mm (1.23 amp "super speed" server fans), Deltas inbound, modified 100+w 120mm
sub-zero: phase cooler at -58c idle and -25c at 500w load, T-Rex K1NGP1N LN2 cooler