Kingston 2x1GB PC2-5300 FB-DIMM Memory Kit
 

"Unlike DDR2, where you can only have 8GB of memory per channel, FB-DIMM allows for up to 192GB of RAM per channel! (That might actually be enough for Vista!) It also allows for more bandwidth per channel too, 40GBs vs. 10GBs for DDR2. However both of those numbers are theoretical...."

http://www.virtual-hideout.net/revie...MM/index.shtml