can x5482 work on mp 3.1 ?

[parisinvest]

hi guys, i've mp1.1 and mp3.1, but only dual 2.66ghz, i want to upgrade them, i've choice between x5355 quad 2.66ghz and x5482 quad 3.2ghz, i've used mp with quad 2.66, so i know it's suitable, but what about x5482, they are also socket 771, can i use them on my 1.1 or 3.1 please? need to know before buy them, thank you so much. daniel

 

[h9826790]

hi guys, i've mp1.1 and mp3.1, but only dual 2.66ghz, i want to upgrade them, i've choice between x5355 quad 2.66ghz and x5482 quad 3.2ghz, i've used mp with quad 2.66, so i know it's suitable, but what about x5482, they are also socket 771, can i use them on my 1.1 or 3.1 please? need to know before buy them, thank you so much. daniel

It's covered in the sticky thread.

https://forums.macrumors.com/threads/mac-pro-cpu-compatibility-list.1954766/

 

[parisinvest]

thank you so much, i get that mp3.1 can use e5482, but not mp1.1 nor 2.1.
btw, doesn't it matter that i use two of them together but with different ref number ? i know maybe it matters on server, but on mac pro, i'm not sure, so would you tell please? many thanks

 

[ActionableMango]

btw, doesn't it matter that i use two of them together but with different ref number

The sSpec has to be what's listed in the table. I don't know what a "ref number" is.