New CPU for Dell GX280

[ctfolmar]

I have a Dell Optiplex GX280 I would like to use as a NAS. Its just sitting there doing nothing and I can put 4 HDDs in it, maybe 6. The problem is, it is a 32 bit system and all the software Ive looked at is 64 bit.
I thought I would change to a 64 bit chipset. It has a 775 socket and a Pentium 4 540 cpu. I have been looking at this page for potential replacements http://www.cpu-world.com/Related_CPUs/Socket%20775_Netburst.html. I believe any of these chips will plug into the socket, but will the motherboard operate it? The Pentium D945 is of particular interest to me. How can I determine which CPU(s) will work in my motherboard? Thank you.

[Wasmachineman_NL]

Do yourself a favor: ditch that boat anchor of a computer and get a NAS or RPi with some external drives.

[Marcin]

There is similar discussion on dell forum what may interest you :
https://www.dell.com/community/Desktops-General-Read-Only/x64-bit-cpu-for-old-dell-optiplex-gx280/td-p/4774732
https://www.dell.com/community/Desktops-General-Read-Only/Dell-Optiplex-GX280-upgrade/td-p/3611170
https://www.dell.com/community/Desktops-General-Read-Only/GX280-incompitable-processor-detected/m-p/1290290
I'm pretty sure any of Pentium D will not be supported in your GX280 even after BIOS update. From quick research you have old Intel 915 chipset.

[ctfolmar]

Thank you both