HPE P43019-B21 16GB PC4-3200AA Memory

HPE P43019-B21 16GB DDR4-3200 Unbuffered ECC Memory Kit

The HPE P43019-B21 is a 16GB single rank x8 DDR4-3200 memory kit built as an unbuffered ECC DIMM, often shortened to ECC UDIMM. It is a different kind of module from the registered memory used in HPE’s larger rack servers, and it is designed for HPE’s entry level, single processor systems.

HPE lists this exact kit in the QuickSpecs for the ProLiant ML30 Gen10 Plus tower, the ProLiant DL20 Gen10 Plus rack server and the ProLiant MicroServer Gen10 Plus v2. These machines take only ECC UDIMMs, so standard RDIMMs or desktop non-ECC memory are not an option for them.

P43019-B21 is available here as New or Refurbished, subject to stock. Choose your preferred condition to see the price and details.

Key Features At A Glance

• 16GB ECC unbuffered DIMM for entry level HPE servers
• Single rank x8 layout with full 3200 MT/s support on Xeon E-2300 processors
• Listed by HPE for the ML30 Gen10 Plus, DL20 Gen10 Plus and MicroServer Gen10 Plus v2
• Error correction for better data integrity than non-ECC desktop memory
• Sold in New or Refurbished condition, subject to stock

ECC UDIMM Versus Registered Memory

Registered DIMMs place a register chip between the memory controller and the DRAM, which lets bigger dual processor servers run many modules per channel. Entry level platforms built on Intel Xeon E-2300 or Pentium processors use unbuffered memory instead. HPE is clear on this point: the DL20 Gen10 Plus, ML30 Gen10 Plus and MicroServer Gen10 Plus v2 support only ECC UDIMMs, with no support for RDIMMs, LRDIMMs or non-ECC UDIMMs.

That means a 16GB RDIMM pulled from a DL380 will not work in these servers, and this kit will not work in a server that needs registered memory. The label is the quickest way to tell them apart: P43019-B21 modules are rated PC4-3200AA-E, where the E stands for ECC unbuffered, while registered modules end in R.

Speed And Slot Rules By Server

Memory speed on these platforms depends on the processor. HPE states that with Intel Xeon E processors, P43019-B21 runs at 3200 MT/s with one or two DIMMs per channel. With a Pentium G6405 processor, the speed drops to 2666 MT/s.

• ML30 Gen10 Plus: four memory slots, up to 64GB using four of these 16GB kits
• DL20 Gen10 Plus: four slots, populated in the order 3-A, 1-B, 4-C, 2-D, with 1, 2 or 4 DIMMs recommended for balanced performance
• MicroServer Gen10 Plus v2: two slots, populated 2-A first and then 1-B

If you plan to combine this kit with the 32GB P43022-B21, take care on the DL20 Gen10 Plus. HPE does not allow different capacities in the same channel once a 32GB UDIMM is involved, and all channels run at the fastest frequency every module can manage. Using four identical 16GB kits keeps things simple and holds the full 3200 MT/s on Xeon E systems.

HPE also advises using HPE qualified DIMMs and notes that memory from previous generation servers is not qualified for the DL20 Gen10 Plus, so older Gen9 or Gen10 UDIMMs should not be reused there.

New P43019-B21 Kits

New kits are unused stock. Select New to see its condition and the warranty that applies.

Refurbished P43019-B21 Kits

Refurbished kits are previously used modules at a reduced price. Select Refurbished to see the condition and warranty details.

P43019-B21 Technical Specifications

Compatible HPE Servers

HPE QuickSpecs list P43019-B21 for:

• HPE ProLiant ML30 Gen10 Plus
• HPE ProLiant DL20 Gen10 Plus
• HPE ProLiant MicroServer Gen10 Plus v2

Older ML10, ML30 and DL20 Gen9 systems are not listed for this kit by HPE, so please check with us before ordering for those models.

Related Parts

• HPE P43022-B21 32GB dual rank ECC UDIMM for the same servers
• HPE P06031-B21 16GB registered DDR4-3200 kit for larger servers
• HPE P11443-091 16GB DDR4-3200 memory kit
• Browse all server memory
• RAID controllers
• Storage controllers

Making Sure It Is The Right Kit

• Your server is an ML30 Gen10 Plus, DL20 Gen10 Plus or MicroServer Gen10 Plus v2
• The existing modules read PC4-3200AA-E, not PC4-3200AA-R
• You want 16GB single rank, rather than the 32GB dual rank P43022-B21
• The label shows P43019-B21, P44877-001 or P43021-0A1

Buying P43019-B21 In The UK

Euroland IT Store supplies HPE memory to small businesses and IT teams across the UK, with delivery options shown at checkout. If you would like us to check the fit first, send your server model, serial number and the label details from your current memory.

Frequently Asked Questions

Will P43019-B21 work in an HPE ML30 Gen10 Plus?

Yes. HPE lists P43019-B21 in the ML30 Gen10 Plus QuickSpecs. The server has four slots, so four of these kits give 64GB.

Can I install registered DDR4 memory instead?

No. The ML30 Gen10 Plus, DL20 Gen10 Plus and MicroServer Gen10 Plus v2 support only ECC unbuffered DIMMs. RDIMMs, LRDIMMs and non-ECC modules are not supported.

Why is my memory running at 2666 MT/s?

With a Pentium G6405 processor, HPE limits these kits to 2666 MT/s. A Xeon E-2300 processor is needed for 3200 MT/s.

Do Refurbished kits come with a warranty?

The condition and warranty for New and Refurbished kits are shown on this page when you pick an option.

How is P43019-B21 delivered within the UK?

We ship throughout the UK, and you can see the delivery choices at checkout.