872766-L21

This is the 872766-L21 processor kit: an Intel Xeon Platinum 8180 for the HPE ProLiant DL560, with 28 cores, a 2.5 GHz base clock and up to 3.8 GHz on turbo.

At 28 cores this is a consolidation part. The reason to buy this many cores in one socket is to run more work per chassis — fewer hosts, fewer hypervisor licences, less rack and less switching. The trade is the 2.5 GHz base clock, so check that whatever you run is genuinely able to spread across cores rather than waiting on one of them.

It carries 38.5 MB of cache, which matters more than clock speed for workloads whose working set nearly fits in it — query-heavy databases and in-memory analytics especially.

Specifications

Platform and generation

This is a 1st Generation Intel Xeon Scalable processor on the LGA3647 socket. Processor kits are tied to a server generation, and the socket is only part of the story: two generations can share a socket and still not accept each other’s processors, because the system board and firmware decide what will actually run.

We have this kit listed in our HPE ProLiant DL560 range, but the record does not state which generation of that server it was built for, and kits in this range span more than one. Rather than guess, tell us the server’s product or serial number and we will confirm the fit in writing before anything ships.

This is an L21 factory-installed kit

The -L21 part number is HPE’s FIO (factory-installed option) kit, meant to be ordered with a configure-to-order server so the processor arrives already fitted with its heatsink and the airflow parts the chassis expects. The matching -B21 is the standard option kit for a server you already own. Same processor either way; what differs is how it is supplied.

The product record for this part also marks it factory integrated, which agrees with the -L21 suffix.

Worth checking before you order

• Confirm the server generation with us first. We will check this part against your exact machine rather than have you work it out from the socket alone.
• Adding a processor to a multi-socket server? Every processor in the machine must be the same model. Send us the part number already fitted and we will confirm the match.
• At 205 W this is one of the higher-power parts in its range. Check the power supply configuration and whether the server needs the high-TDP heatsink rather than the standard one.
• This is a LGA3647 part and will not fit a server built for a different socket, whatever the model numbers suggest.
• Memory is populated per processor. Plan the DIMM layout alongside the processor, since an unbalanced configuration costs real bandwidth.
• Update system firmware before or alongside a processor change. A server on older firmware may not recognise a newer stepping.
• Not certain this is the right part? Give us the server’s product or serial number and what it runs, and we will confirm the processor and quote the alternatives.