Well, it's possible that the heatsink and fan are different (this might change with card revisions); other than that, they're exactly the same card (same PCB, same clocks). If NCIX is so close, just go there and check the card personally.
__________________ SuperPi 1M: 29.6s - 3DMark06: 8616 The Geek Test v3.1 Score: 36.3% - Major Geek