844372-L21

HPE 844372-L21 is a BL660c Gen9 E5-4650v4 2P FIO Kit. The part number is the reliable way to identify it, because accessories of this kind are often visually identical across generations that are not interchangeable.

Adding a second one. A matched pair means the same model, not merely the same family or clock speed. The kit should include the heatsink; the fans frequently do not come with it and have to be ordered alongside. Give us the server model and what is fitted today and we will confirm the complete set.

How we supply it. Supplied new where available, otherwise as tested stock with warranty, subject to availability. Tell us the chassis or model it has to work with and we will confirm the part before anything ships. Quotes go out the same or next working day.

The 844372-L21 kit fits an Intel Xeon E5-4650V4 to the HPE ProLiant BL660c server blade — 14 cores, a 2.2 GHz base clock and up to 2.8 GHz on turbo.

14 cores at 2.2 GHz is the middle of the range and where most general-purpose servers sensibly land: enough for a working virtualisation host or a mid-sized database without paying what the top bins cost.

It carries 35 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 processor is from the Intel Xeon E5 v4 family, on the FCLGA2011-v3 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 BL660c server blade 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.
• This is a FCLGA2011-v3 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.