Have these things really become that hard to find? I have a Ramsey 07 and DMAC 04 combination that was supposed to go into an A3000 desktop. The problem is the A3000 hasn't been powered on in 5+ years and I don't have a 3640 so there really isn't a need other than it would be cool to have it with the latest/greatest chips.
Pros:
1 - $200 is an awful lot for a single chip.
2 - I don't even know WHY I need the chip.
3 - It may be another 5 years before I install the chip and power the A3000 on.
4 - Someone else has a real need. -- I think.
5 - I'll probably only regret the sale for the 10 minutes it takes to wrap and ship the item.
Cons:
1 - I'll never find one again if I end up needing one.
The cons are pretty weak. Send me a PM.
Brian