SC440 - processor upgrade compatibility - Intel Core 2 Duo E7600

I am considerung upgrading my SC440 and I found the E7600, which - in theory - should meet the specs to run it.

IF you have better theoreticcal insight in this matter I'd be happy to be informed about it, if you have such a combination up and running please leave a note. I'd rather not spend $130 testing a processor that will possibly not be able to fire up my server. I guess there are many other happy SC440-users out there enjoying this litte silent and dependable miracle box. Thanks for your time!

If you are a Dell technician, you might have a list handy if these will work.

Most of my interest goes towards this processor:

Product Number:	BX80571E7600
Frequency:	3.06 GHz
Cache:	3MB Cache
Frontsidebus:	FSB1066 MHz
Socket:	LGA775
Design:	ATX
Fabrication:	45 nm
Core name:	Wolfdale
Technologies:	Enhanced Intel SpeedStep Technology, EM64T, Execute Disable Bit

And: Will these Dual Core work (theoretically / practically)?

E5400, Dual Core, 2.7 GHz, 2MB
E6300, Dual Core, 2.8 GHz, 2MB
E6500, Dual Core, 2.93 GHz, 2MB
E6600, Dual Core, 3.06 GHz, 2MB

Finally: What about the core 2 duo version?

Core 2 Duo E7500, Dual Core, 2.93 GHz, 3MB, FSB1066
Core 2 Duo E7600, Dual Core, 3.06 GHz, 3MB, FSB1066