Hi foks
I sent my MB for RMA in NL, i got it back with one new bent pin and some other damages, also they had done "nothing" with the board, this one had little bit less noise than when i sent it in. However they asked for photos on the second bent pin and damages, they conformed that this damages was not on it when i sent it and they sent UPS for pick it up and do a new check. They found the (or when there engineers heard it was the electric noise they knew the issue stright away) and they replace the MB with a new MB (not new in those terms, just another one from there stock) that they had tested and good to go, no electric high pitch noise on this one. I had it installed in my system now and guess what? Yeees the noise is still there. We will see what happens on Monday when they read my mail, will probably send it back a third time, they said that they know the cause of issue that makes this noise but still mine got it.