Table of contents
Conclusion:
For an enthusiast board the configuration is questionable, hardcore-overclockers have to mess with any BIOS setting to get high CPU-overclock. The power-consumption is sky high, and gives you about 15W-25W higher consumption with full load, but up to 45W more in idle, which will result in an costly energy-bill.
With high clocks and high FSB DDR3 can benefit in memory intensive programs, such as Gordianknot, but this performance gain is as little as 1%, the high cost of DDR3 won't justify such investment. The BIOS needs more improvement, because some memory kits will give you trouble. It seems a good idea to wait for the modules to arrive and test them with boards first, before selling them.
The board itself runs stable. If you aren't interested in overclocking and a decent CPU will suffice, it will do the job, but there are cheaper boards around that will do the same job for less money and with less power consumption. Also DDR3 does not give you any significant performance gain, frankly, at the moment it's a waste of money.
The ASUS P5K3 Deluxe retails for about €205,-.