Elenelen, have you had a chance to check these 8 pin packages yet? I'm curious to know too.
not that it's 100% accurate, but from looking (squinting) at the pic of theNeptune ASIC KnC posted on their forum page ...
http://forum.kncminer.com/forum/news-and-anouncments/44256-neptune-asic-cardto me, it looks like they (the VRMs) are version BMR4641002 (40A/ 0.6-3.3V Through hole and Surface mount) I can't really make out the numbers/characters after that though ...