<< OEM cpus sometimes go to 1 year...if the retailer is stupid >>
I can't seem to find it on AMD's warranty page but it was there fairly recently. According to AMD, OEM CPU's have a 1 year warranty if the reseller purchased the chip from an authorized distributor. (TechData, Merisel, etc.) If the reseller did not purchase the chip from an authorized distributor or they are giving you less than a 1 year warranty, the source of the chip should be 'suspect.'
Edit: Well, looking at AMD's page they now state there is no warranty at all on non-boxed processors. Wonder when they changed it?