Refurbished 21.5" iMac cores i5 or i7, is it possible?

[DrHPMW]

As the title suggests...
Is there any possibilty of ordering a refurbished 21.5" iMac with either cores i5 or i7 custom built into it?

My thoughts why it would not be possible were along the lines of: hardware architecture disallowing this kind of hybridization to occur, as in the system was just never built for those processors.

I know this sounds like a stupid question, but it would help immensely if someone could tell me whether this is above is possible.

Cheers

 

[old-wiz]

21" doesn't have i5 or i7, only 27"
refurbs can't be custom built; you buy what they offer.

 

[Hellhammer]

Simply, no. 21.5" uses Core 2 Duo which is hugely different from iX CPUs, it uses LGA 775 while Nehalems use LGA 1156. Quad cores used in 27" are also too hot for 21.5"