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Last reply by 01-16-2020 Solved
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PowerEdge R900 motherboard upgrading CPU's

I have an R900 with a C764H motherboard and four XEON E7330 CPU's.

These CPU's are not supported by VMWare ESXi 6.5  however the XEON E74xx series is.

1) the 7330 is a quad-core, 2.4GHz, 2x3MB L2 Cache.  the 7440 is also a quad-core, 2.4Ghz, 2.3MB L2 cache.  i assume i could simply drop in 7440's without any problem.  is this correct?

2) the E7450 is a 6-core, 2.4GHz, 3x3MB L3 cache CPU.  can i drop these in, or do i also need to change the motherboard to one that works with 6-core CPU's?

3) if the answer to #2 is a yes (that i do not need to change motherboards), could i use X7460 which is the same as the E7450, but with a faster clock (2.66GHz instead of 2.4GHz)?  or do i need a different motherboard that supports the faster clock speed?

THanks

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Hi,

Both the 7450 and 7460 are validated CPUs. You should not need to replace the system board for the newer CPUs, just BIOS 1.1.9 or newer. 


Thanks,

DELL-Josh Cr
Social Media and Communities Professional
Dell Technologies | Enterprise Support Services
#IWork4Dell

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Hi,

Both the 7450 and 7460 are validated CPUs. You should not need to replace the system board for the newer CPUs, just BIOS 1.1.9 or newer. 


Thanks,

DELL-Josh Cr
Social Media and Communities Professional
Dell Technologies | Enterprise Support Services
#IWork4Dell

Did I answer your query? Please click on ‘Accept as Solution’. ‘Kudo’ the posts you like!

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2 Bronze

Hi, I did as you suggested. Downloaded Update ISO and updated everything. Now my BIOS version is 1.2. However it does not work. Fans are rotating, no error on display. But no output from video and keyboard. I have checked with only only one CPU. No success. While returning to former CPU everything works. What else can we do? Thanks.

All of the other sockets have no processors when you put the one new one in? Are you putting it in socket one? Which is the rightmost socket when looking at the front of the server. 


Thanks,

DELL-Josh Cr
Social Media and Communities Professional
Dell Technologies | Enterprise Support Services
#IWork4Dell

Did I answer your query? Please click on ‘Accept as Solution’. ‘Kudo’ the posts you like!

2 Bronze
2 Bronze

Yes, I do as you say. The only CPU is in 1st socket as shown on cover (the rightmost when looking at the front).

How is the memory configured? Can you try to put all the new processors in and see if it works?


Thanks,

DELL-Josh Cr
Social Media and Communities Professional
Dell Technologies | Enterprise Support Services
#IWork4Dell

Did I answer your query? Please click on ‘Accept as Solution’. ‘Kudo’ the posts you like!

2 Bronze
2 Bronze

You know everything is connected properly. After posting here I haven't turned on servers till today. Today I wanted to test all CPUs by one and guess what, from first time server is up, even with all other CPUs. I do not know what magic happened, but really I did nothing new, just turned on. Just a silly question, can it be server needs some time for synchronization?

Glad you got it working. There shouldn’t be anything with time synchronization that would prevent it from completing post. 


Thanks,

DELL-Josh Cr
Social Media and Communities Professional
Dell Technologies | Enterprise Support Services
#IWork4Dell

Did I answer your query? Please click on ‘Accept as Solution’. ‘Kudo’ the posts you like!

Waking up an old thread...have a R900 that is only seeing 1 CPU.  Have 2 different sets of 4 CPUS to test any of the 8 cpus  alone boot the machine without issue.  bios is 1.2.  BMC was lost on last firmware update.  Don't know how to recover BMC if its not recognized by the system at all just a connection failure message no versioning on boot for BMC.  why will the CPUs not show on boot but all work alone so its not a CPU issue?

Also tried two separate main boards fyi.
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