Xeon haswell cpu works in 3020. Evidence on user benchmark Xeon E3-1245 v3 [URL] Xeon E3-1241 v3  [URL] Xeon E3-1220 v3  [URL] 1230 v3, 1231 v3.  You should have no problem w 1226 v3. Any desktop ddr3 satisfying Non-ECC dual-channel 1600MHz DDR3 SDRAM will do. Dell documentation is scant, but you can ask questions on this forum. 3020 user experience is extensive.
Hi all,   I just recently got ahold of an Optiplex 3020 SFF (for free, because the ebay seller lied about the processor it came with) and I was wondering what my options might be to increase its ability. Ideally, I would actually like to use a Xeon as I'm planning on using it for multiple server applications. I specifically have my eyes on the Xeon E3-1226 v3. My main question is, will this be a viable upgrade? This motherboard uses the LGA1150 socket and H81 chipset (as evidenced by the fact that it currently has a Pentium G3250 installed), but I'm not sure if just matching the socket and chipset will be enough to ensure the computer works. I'm aware I might need to upgrade the CPU cooler.    I'm also interested in upgrading the RAM, but I'm fairly certain I can slot in any old DDR3 that's compatible with the processor (correct me if I'm wrong). Additionally, I'm wondering if there's anywhere I can get better documentation for this machine? Aside from the 2-page spec sheet, I haven't been able to find anything in-depth, even if I search by specific part numbers.   Thank you for the help!
Optiplex 3020 SFF - Upgrading CPU + RAM