3800+ Newcastle Overclocking

[RucHee]

Hey guys. Currently I'm running a 3800 newcastle @ 2.65ghz stable (220x12) 1:1 with pc3500 geil ultra platinum. I should be getting pc4000 and pc4800 soon, and i was wondering if anyone knows how far i might be able to get with the pc4800? I'm at 37c idle right now @ 2.65, and about 44/45c load. I use the zalman 7700cu air cooling. I was thinking like 235x12 for 2.82ghz and maybe 4x HTT for around 900fsb. I don't know what the mhz thresh hold of these newcastles are. Doesn't seem to be running too warm now, and just want some input

PC:
AMD 64 3800+ Newcastle (E4 Stepping)
ASUS A8N-SLI Deluxe mobo
eVGA 7800GTX
1gb pc3500 (soon to be 1gb pc4800 (ddr 600))
Dual 10k Raptors in RAID 0
500w X-Connect PSU

Please let me know / give me pointers with OC'ing the newcastle