What are the advantages of the Z620 over the Z420?

[Rhothgar]

Some of you will recall my posts at the beginning of the year regarding overclocking an xw4600 and I eventually opted to get some Z420's and upgraded them.

Now. I may be getting mixed up but are there any advantages to the Z620 over the Z420.  I seem to recall TPM2.0 being mentioned but presumably this was simply be able to run Windows 11?

I have the opportunity to go and look at a couple of Z620's tomorrow.

Is there a motherboard iteration I should look for as being better than any other?  I have limited time to research I'm afraid.  So maybe the Z620 has more memory slots than the Z420 or am I getting confused with the Z640 being a better model overall?

Not sure if the Z620 is overclockable either.

Just some general advice on pros and cons would be good.  Maybe the Z620 takes V3 and V4 chips.  Maybe I stick with my Z420's for now.  I just do not want to miss what looks like a cheap buy for 2 Z620's.  They are in an auction but it's a 2 hour round trip and I will not be able to glean any information from the auctioneer even if I ask.  I have to go and physically inspect.

Thanks in advance

[DGroves · Accepted solution]

the z620 can support dual CPU's with the optional CPU riser

the z620 holds more drives internally and has more bays that are accessible externally

the z620 DOES NOT SUPPORT TPM 2.0, it's not officially certified for win 11 because the TPM is 1.2 and the CPU's are not supported, however methods exist to bypass the above two items allowing win 11 to be installed on the z620

other than those items there is not much else diffrent look at the HP "quickspecs" for both models

no HP workstation supports overclocking through the bios,

some models running specific builds of windows 7/10 along with specific builds of the intel "XTU" utility with  some cpu models could do modest software based overclocks