Corsair is one of the biggest (if not THE biggest) names in the memory industry.
Annnnddd.... I agree with Eidorian, the ValueSelect RAM is simply Corsair's name on some very ordinary, cheap generic RAM. In this case the reputation is not reflected in the product (Disclaimer -- we sell Corsair RAM, I am happy selling the TWINX series, but not a fan of the ValueSelect)
Eidorian: The second Anandtech article is comparing a MacPro upgraded from 2.0 GHz to 3.0 GHz, with 667 MHz CL5 ECC FB-DIMMs to an Asus motherboard with 800 MHz DDR2 CL4 RAM running 2.0 or 2.1 V on the memory buss.
When they attribute performance differences to the FB-DIMMs saying have high latency it is at least partially because the Asus board is capable of running CL4 RAM at 'overclocker' voltages and at 800 MHz. In some tests there was no difference, in some tests the Asus board had a 1% - 10% advantage.
I am digesting the information from the first Anadtech article and will reply later.