Don't think select manual is an option - what I get for buying a Dell. Will check some more.
I jumped all the way to buying another CPU.
The Dell Policy on Upgrading the Motherboard or Processor in a Dell™ Computer = Dell does not offer processor or motherboard upgrades for purchase as discrete items, nor does Dell recommend upgrading the processor or motherboard in any given system.
Per the manual this model supports all three Core i3, i5 & i7. It almost looks too easy to remove the Core i3 & replace it with a Core i7 that will support 1333MHZ RAM @ a cost of $200. This PC is no longer under warranty. Is there any reason you can think of that the Mobo would not accept the Core i7 = 1.6GHz Intel Core i7 Mobile Processor i7-720QM 6MB CPU?
Would the performance increase be worth the price?
I see the Core i7 comes with turbo boost (2.8 GHz) which is not avail with the Core i3.