Optiplex 745

Hi Experts,

I have an old Desktop PC an DELL OPTIPLEX 745.
This is a Small Form Factor.
Is it possible to change the Mainboard on this system ?
Because I want to use a more powerful mainboard, maybe with 32GB RAM.
What size means SFF ?
Is it MINI-ATX ?
Do you know maybe a table to compare these different sizes ?
Eprs_AdminSystem ArchitectAsked:
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dbruntonCommented:
>>  Is it possible to change the Mainboard on this system ?

Short answer:  No

Long answer:  The motherboard is proprietary to Dell, meaning only Dell motherboards will fit in it.  Dell places their mounting holes in different places.  You might be able to get a SFF board from another Dell but most likely it is already in a perfectly good case.

SFF = Small Form Factor
It is not a mini-ATX board but a BTX version.

See the following for sizes of motherboards

https://en.wikipedia.org/wiki/BTX_%28form_factor%29
https://en.wikipedia.org/wiki/ATX
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David Johnson, CD, MVPOwnerCommented:
SFF - Small Form Factor.  By the time your finished all that will be left is the case.  Donate the machine to a charity or sell it in a garage sale. You have to replace the power supply, the motherboard, have to fudge the backplane. It's not worth the effort since a case is under $100
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