its not recommended lor since urs now 3.5ghz oso nid 1.475V .
1.55V is still considered acceptable .
but u nid to make sure ur casing got good ventilation and everything so d proc heat wont affect other hardwares as well .
ur using 4890 which also generate lots of heat .
dat might b d problem of ur hanging PC .
hmm , anyway changing to 850W might not solve ur problem .
even i7 OCed to 4ghz + GTX285 SLI wif overvolt mod only use around 680W .
urs might juz nid around 450W++ only .
Added on May 14, 2009, 9:07 pmanyone can give comment on my OC setting ?
im currently trying to run 3.75ghz at 415x9 1:1 830mhz DDR2 4-4-4-12 2.2v
vCore 1.5
PLL 1.6
vNB 1.49
vTT 1.39
vDIMM 2.2
i got reading 46C idle 55C load >.<"
to me i think still considered low temp ^^,
any comment guys ?
today, my cpu running at 3.6ghz @1.5v......haven't try prime95. will try to lower the vcore later. i think my CM690's ventilation and airflow should be ok lor. i have 1pc CM 90cfm 120mm long life fans at front for sucking air and another 1pc at side panel doing the same job as well, another CM 120mm fan at the bottom sucking air and back panel blowing out hot air. i oso put 2pcs 8cm fans on top to blow out hot air as well. and i oso added an extra CM 90cfm 120mm long life fan to my hyper 212 lor. will add another 90cfm at the front panel for sucking air in when changing PSU this weekend. hehehe....