435T/9000 CPU Upgrade

Simple Question,

 Does the XPS435T/9000 Bios support all the processor upgrades, from the 920 thru the new 980 six core??

Any problems Bios wise as these machines could have been ordered with optional CPUs??

 Have had this machine for over a year now and will have a spare 930 CPU to replace the 920 in it now.

2.6 to 2.8.

Only 200mhz upgrade but have it on hand from my new scratch build thats going to the 980X 6 core shortly.

 Built my new machine because of un-upgradability of the Dell.

New machine 4.2 and going higher soon.

Later