Strange issues with MSI Neo4 Platinum & Opteron 165

[kingnubian]

Just popped in my new Opteron 165 into my system which includes the following.

MSI K8N Neo4 Platinum (Bios 1b)
Opteron 165 (default voltage)
1gig (2x512MB Dual Channel) Platinum Memory
Seagate 80gig 7200.7 Hard Drive
Liteon DVD-rom drive
BenQ 16x DVDr
ATI 2meg Rage Pro PCI (!!!)
SilenX 400W PSU
Artic Cooling Freezer 64 Pro CPU Heatsink/Fan

I have this strange problem. reduced my HTT multiplier to 4x, and set FSB to 250Mhz with Ram at 166MHz. Cpu speed reported as 2250Mhz, ram 415Mhz effective, anf HT at 1Ghz.

My ram will not do much more than it is right now, at least not without playing with timings which I'm not skilled at yet. I reduced my ram speed to 133Mhz to try and push my cpu speed (FSB) higher while reducing my HTT multiplier to 3x so it wouldn't be an issue in the overclock.

Seems even if I leave everything alone, setting my ram to 133Mhz results in a system that won't boot!!! Now this is strange. Even without moving any other setting and just dropping my ram speed form 166 to 133 results in no joy when setting it back to 166Mhz results in a stable syste, (Prime95 dual for 2-3+hours)!

I am presently using a cheap ATI Rage Pro PCI card untill my more beefy x800GTO2 (Unlocked and overclocked to PE speeds 100% stable) comes in.

What could be wrong??? Is there an issue with the 1b bios release possibly??

P.S. Just noticed that I also lost sound! Saw over on the MSI own forum that some have reported this as well. Any ides folks??