My X-Connect has been very stable! I ran an Asus probe while playing Painkiller and HL2 and it stayed very consistent. The low was 11.968V and the high was 12.224V, played on Ultra detail settings, 4xASF and 4xAA! I was worried after I got mine that it would bomb out, but so far it has been solid! I am actually going to buy a PC P&C 510 SLI when I get the 2nd BFG 6800 Ultra OC and make my son an Intel based system with an ATI X850XL and give him the Ultra X-Connect.