Bjorn3d has posted a review of the DFI LanParty NF4 SLI-DR.  You can also check out my review here as well. 
DFI really set the stage for tweakers and overclockers with this board and are now reaping the benefits of its hard work and research. As of today (March 18), fifteen of the top twenty systems in the 3DMark05 hall of fame use DFI SLI systems! With an option for DIMM voltage up to 4V, a “FSB” clock up to 456MBHz, CPU clock multipliers and plenty of memory dividers, DFI has made sure its board would come out on top and that its users’ performance would as well. This board more than likely won’t be your bottleneck when you try to squeeze out every ounce of power from your components. Kudos to DFI for putting together such an awesome package and well-designed board.