Kentsfields have issues with some motherboards and overclocking.
I cant say much for the other boards they listed as having issues, but the P5B Deluxe gets along very well with the Kentsfields based on the 5 that I have.
I will be receiving a P5K Deluxe (P35 chipset) tomorrow and will be testing it this weekend with a new Q6600 I got yesterday.
From this article link
Overclocking, not with all MOBO!Unlike with the QX6700, the Q6600â€™s multiplying coefficient is blocked for increases. Some will say that this isn't a problem as it is possible to increase the FSB. This is true, but unfortunately Kentsfield processors like the QX6700 and Q6600 have some trouble with high FSBs and some motherboards for a reason unknown to us.
With the ASUSTeK P5W-DH Deluxe and the bios 1707, with a stable configuration we were unable to reach over a FSB of 333 MHz. This was 3 GHz for the Q6600 and 3.33 GHz for the QX6700. Even at 3.1 GHz, the Q6600 had errors when several sessions of Prime 95 were launched simultaneously. If, however, we used the multiplying coefficient, the QX6700 was stable from 3.46 GHz.
The P5W-DH wasn't the only card that suffered from this problem, which we hope will be solved by a new bios. However, it wasn't the case of the P5B Deluxe and for this reason we chose this card.
With this motherboard we have had more flexibility with FSB and with this processor we reached 9x378 MHz, or 3.4 GHz. The configuration was stable with four Prime 95s for 30 minutes. To reach this frequency we had to increase the voltage to 1.45V in the bios. Itâ€™s important to know that with this card and despite the CPU block power supply of 8 phases, there is a strong voltage reduction in practice with the Kentsfield; 1.4V in stand by and falls to 1.35V in use. With this voltage our meter went a little crazy and measured 172 watts in use or 70 watts more than with initial settings. In consequence, it will be difficult to cool the processor silently.