Just got my new Opty 165 and some G.Skill DDR500 delivered today!

[5t3v0]

Here's the timings I used to run my GeIL at if its any help:

TCL = 2.5
TRCD = 3
TRAS = 6
TRP = 3
TRRD = 2
TWR = 3
TRTR = 2
TRC = 11
TRFC = 14
TRWT = 4
TREF = 7.8us
Preamble = 5.5ns
Async Latency = 7ns
Idle Cycle = 16
Dynamic Idle = Enabled
RW Queue = 8
Bypass Max = 4
DQS Skew = Disabled
32 Byte Granularity = Disabled

Can you run the memory & cpu 1:1 at 186MHz which would the same memory speed as with the 133 divider on your current cpu? If you can, then the speed & timings are OK, in which case its the dividers they dont like. If it wont boot then perhaps the memory timings or the voltage are wrong. What vdimm are you using? Perhaps try reducing for the lower frequencies. Also try increasing the HTT to say 300 & the set the divider to 140 which is going to be around 200MHz & see if that boots.

I'm clutching at straws here in case you haven't guessed. If I were you, I'd be quite happy with the cpu at 2.6GHz and value memory at 217MHz

 

[Job]

THe maths works out fine, just doesn't happen in practise! For some reason the memory isn't liking dividers below 150, so I guess I'm just gonna have to deal with it! A 44% overclock ain't bad in anybody's book - will keep trying tho, and will let u know if I cant get any higher. Thanks so much for ur help!