Intel DDR2 FB-DIMM Performance

Intel was first to adopt DDR2 memory when they had launched
their LGA-775 socket nearly two years ago with the Grantsdale and
Alderwood Chipsets. Intel Corporation is first again to introduce the
latest in memory technology: FB-DIMM. FB-DIMM is short for Fully
Buffered Dual Inline Memory Module, and is primarily designed for
mission-critical server environments that require maximum performance
with minimal errors. FB-DIMMs are designed to bring the best traits from
DDR2 memory while combining a new point-to-point serial memory
interface. Some of the key benefits for Fully Buffered DIMMs include
enhanced reliability, greater bandwidth, improved scalability, and
higher capacity per memory channel. We at Phoronix have the first
performance preview of the new DDR2 FB-DIMM memory modules on the Xeon
Greencreek platform.

These are the first benchmarks of any FB-DIMM I have seen, and it does obviously make a difference. As for the price though, that may be what will hold you back from a purchase for your server.