HPE ProLiant XL220a Gen8 v2 Memory

Genuine HPE DDR3 memory for the HPE ProLiant XL220a Gen8 v2, new and refurbished. This tray holds two server nodes with four Unbuffered DIMM slots each, and the constraint that catches people out is absolute rather than a matter of degree: Registered DIMMs are not supported here at all.

XL220a Gen8 v2 Memory Specifications

• Type: HPE SmartMemory Unbuffered ECC DDR3 (UDIMM) only; HPE documents no support for Registered DIMMs or non-ECC Unbuffered modules
• Slots: four per node, two channels of two, populated only where the processor is installed
• Maximum: 32GB on a node's four slots, using four 8GB PC3-12800E modules at 1600MHz
• Stocked speeds: PC3-12800E (DDR3-1600) at standard and low voltage, and PC3L-10600E (DDR3-1333) low voltage
• Stocked sizes: 8GB and 4GB dual rank x8, 2GB single rank x8, each kit a single DIMM
• Ordering rules: two DIMMs per node minimum, in pairs of matching part numbers, with both nodes configured identically

Registered DIMMs will not work in this server at any capacity. The XL220a Gen8 v2 supports Unbuffered ECC DDR3 only, four slots per node and 32GB on four 8GB modules at 1600MHz. HPE also states that memory from previous generation servers is not fully compatible here, so an older DDR3 UDIMM is not a safe substitute either.

Does Filling All Four Slots Cost You Clock Speed?

No, which makes this platform unusually forgiving for a DDR3 machine: HPE's populated-speed table holds every module above at its native clock with both DIMMs in a channel filled. Speed follows the part number, not the count. HPE's one caveat sits on the 1333MHz rows — SmartMemory is supported at DDR3-1333 at two DIMMs per channel, where third party Unbuffered memory may only reach DDR3-1066.

Choosing the Right XL220a Gen8 v2 Memory

• Registered DIMMs are not an option, at any capacity. An RDIMM from a DL-series server of the same era will not run here.
• Buy for the tray, not the node. DIMMs go in matching pairs and both nodes must match, so a tray at its ceiling is eight 8GB modules of one part number.
• Memory from earlier generations is not qualified. HPE states it is not fully compatible here, so an older UDIMM is not a safe substitute.
• Load the heaviest module furthest from the processor. HPE populates a channel from the most ranks to the fewest; at one DIMM per channel, use the white slots.
• Mixed speeds are allowed but level down. The server selects a common optimal speed, so one 1333MHz module sets the pace for the whole node.

Complete Your XL220a Gen8 v2 Build

The storage side of this tray is bought in matching pairs for the same reason — see XL220a Gen8 v2 drives and storage controllers. Also available: networking adapters and rack options, or the full XL220a Gen8 v2 parts listing. Background reading: understanding memory rank and the importance of memory speed, with every model under HPE parts by server model.

XL220a Gen8 v2 Memory FAQ

How much memory does an XL220a Gen8 v2 support?
32GB on a node's four slots, using four 8GB PC3-12800E Unbuffered DIMMs at 1600MHz. The tray holds two nodes, and each has its own four slots and its own ceiling.

Can I use Registered (RDIMM) memory in an XL220a Gen8 v2?
No. Only Unbuffered ECC DDR3 is supported. HPE's population rules for this server state there is no support for RDIMMs or for non-ECC Unbuffered modules.

How many memory slots does each node have?
Four, arranged as two channels with two DIMM slots per channel. DIMMs are installed only in the slots belonging to a processor that is fitted.

Does filling all four slots slow the memory down?
No. HPE's populated-speed table shows the 1600MHz Unbuffered parts running at 1600MHz at both one and two DIMMs per channel, so a fully populated node keeps its rated speed.

Do XL220a Gen8 v2 DIMMs have to be bought in pairs?
Yes. HPE requires a minimum of two DIMMs per node and matching part numbers within a pair, and both nodes in the tray must be configured identically.

Can I reuse DDR3 memory from an older HPE server?
HPE states that memory from previous generation servers is not fully compatible with this server and is neither qualified nor warranted in it, so an older DDR3 UDIMM is not a safe substitute.

✅ Looking for a specific XL220a Gen8 v2 memory module? Browse our full selection below.

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