Depends. You'll need to relax the timings and up the voltage of the RAM. I went through about 8 brands of RAM for my current motherboard. HyperX was the worst of the bunch when it came to overclocking.
P4 2.6C, Thermalright SP94/Panaflo 92MM M1A, IC7 Max3, Swifty MCX159, 1GB Geil PC4000 Ultra Plat, Radeon 8500, Audigy 2, 2X WD Raptor RAID 0, WD 250GB SE, Plex 708A, 166SDVD, LianLi PC75, XP Pro.