hp z420 server cpu upgrade

[vanguard7]

I have a hp z420 server/workstation. The Cpu in it was a intel xeon e5-1620 3.6hz , I began looking at cpu upgrades to fit the slot and found several but not all the cpu are working ( powers on but not booting)  i have tried the below list for the LGA2011slot

intel xeon e5 - 2660v2( not working)

intel xeon e5 - 2658v2(not working)

ordered a e5 - 2695v2 to try.

of all these cpu are designed for this lga slot why would they not work? 

please advise

[NonSequitur777]

@vanguard7,

Welcome to our HP Community Forum!

Well, looking here amongst HP Z420 Workstation Users, all the Xeon processors you mentioned are compatible.  Here are just a few examples:

1.) Xeon E5-2660 v2: https://www.userbenchmark.com/UserRun/47002695

2.) Xeon E5-2658 v2: https://www.userbenchmark.com/UserRun/56110412

3.) Xeon E5-2695 v2: https://www.userbenchmark.com/UserRun/66886727

I would recommend the HP Z420 Workstation Software & Driver download link to check for any updates -including the most recent BIOS version (03.96 Rev.A) here: HP Z420 Workstation Software and Driver Downloads | HP® Support.

Hope this was helpful.

Kind Regards,

NonSequitur777

[NonSequitur777]

@vanguard7,

Lest I forgot to mention it (assuming you knew), is that all the aforementioned processors lack integrated graphics, meaning, you'll need a graphics card to get a video output.

Kind Regards,

NonSequitur777

[SDH]

To the OP... what is the boot block date of your workstation, from BIOS? You would not be the first to have a Z420 v1 and fail at getting a v2 processor to work in it. That is where I'd look first. Just search in here or via google for Z420 v1 versus v2.

p.s. A motherboard transplant of a v2 version would be what I'd do if that was the issue. I've posted in the forum here on how to look at an eBay ad and see from the right-hand HP side part numbers on the motherboard's barcode label to know if it is a v1 or a v2. A Z420 v1 cannot run a v2 processor. Then you need to make sure the seller sends you the v2 shown in the ad.