HPE ProLiant DL525 Gen13 Memory

Genuine HPE DDR5 memory for the HPE ProLiant DL525 Gen13, new and refurbished, shipped tested or factory sealed. The DL525 Gen13 pairs its single 6th Gen AMD EPYC 9006 SP7 processor with 16 DDR5 DIMM slots on 16 memory channels, and takes two module families: HPE DDR5-8000 Registered Smart Memory (RDIMM) and HPE Multiplexed Rank Smart Memory (MRDIMM) at 12800 MT/s.

DL525 Gen13 Memory Specifications

• DIMM slots: 16, on 16 channels per processor, one DIMM per channel
• Supported types: RDIMM and MRDIMM
• Maximum capacity and speed: HPE states 4.0 TB as 16 × 256 GB RDIMM at 8000 MT/s, and 2.0 TB as 16 × 128 GB MRDIMM at 12800 MT/s
• Supported populations: 1, 2, 4, 8, 12 or 16 DIMMs
• Memory bandwidth: HPE quotes up to 1.6 TB/s for the platform
• RDIMM kits listed: 32GB (1×32GB) Dual Rank x8, 64GB (1×64GB) Dual Rank x4 and 96GB (1×96GB) Dual Rank x4, all DDR5-8000 CAS-64-64-64 EC8 Registered Smart Memory
• MRDIMM kits listed: 64GB (1×64GB) and 128GB (1×128GB) Quad Rank x8 DDR5-128/64 CAS-52-52-52 EC8 Multiplexed Rank Smart Memory
• Ordering: the -B21 memory SKUs are for stand-alone memory; each has a corresponding -F21 SKU used only when a server is configured with integrated memory at the factory

One DIMM per channel changes the arithmetic. The DL525 Gen13 has 16 slots on 16 channels, so filling all 16 is the only way to use every channel and there is no second-DIMM speed step-down to plan around. The decision is the family: RDIMM at 8000 MT/s or MRDIMM at 12800 MT/s. The 64GB kit exists in both, so check which family is installed before adding to a server — and the 2 TB MRDIMM maximum is the largest configuration the Version 1 kits can reach.

How much memory can the DL525 Gen13 hold?

HPE's stated maximum is 4.0 TB of RDIMM, as 16 × 256 GB at 8000 MT/s, and 2.0 TB of MRDIMM, as 16 × 128 GB at 12800 MT/s. The 256 GB RDIMM that the 4.0 TB figure assumes is not in the Version 1 option list, which carries 32GB, 64GB and 96GB RDIMM kits; the 2.0 TB MRDIMM maximum is reachable with the listed 128GB kit. The configurations below use the kits HPE lists and the populations HPE supports.

Because the DL525 Gen13 runs one DIMM per channel, filling all 16 slots is the only way to use every memory channel, and there is no second-DIMM speed step-down to plan around. The practical choice is between RDIMM at 8000 MT/s and MRDIMM at 12800 MT/s: the 64GB kit exists in both families at the same capacity, so the family, not the size, is the decision at 1TB.

Choosing the Right DL525 Gen13 Memory

• Pick one family. HPE lists RDIMM and MRDIMM as the two supported types for this server and describes them as separate kits with different speeds, CAS latencies and rank structures. Build a server on one family and expand it with the same.
• Populate to a supported count. HPE supports 1, 2, 4, 8, 12 or 16 DIMMs. Sixteen matched modules uses all 16 channels; a 12-DIMM population leaves four channels empty.
• Match the kit, not just the capacity. The 32GB RDIMM is the only x8 Registered kit, the 64GB and 96GB RDIMMs are x4, and both MRDIMM kits are Quad Rank x8. Expanding an installed server means ordering the same kit again.
• Order -B21 for an upgrade. The -F21 SKUs in HPE's document are factory-integration codes and are not sold as stand-alone parts; every memory kit on this page is a -B21 kit.
• Read the rank and speed basics first if DDR5 server memory is new to you: memory rank in HPE servers, why memory speed matters and what CAS latency means.

Complete Your DL525 Gen13 Build

Shop the rest of the server: all DL525 Gen13 parts, processors and heat sinks, E3.S NVMe drives, storage controllers, networking adapters and power supplies. For other models, browse all HPE ProLiant server memory or HPE parts by server model.

DL525 Gen13 Memory FAQ

How much RAM does the HPE ProLiant DL525 Gen13 support?
HPE states 4.0 TB as 16 x 256 GB RDIMM at 8000 MT/s, and 2.0 TB as 16 x 128 GB MRDIMM at 12800 MT/s. The Version 1 option list carries 32GB, 64GB and 96GB RDIMM kits and 64GB and 128GB MRDIMM kits, so 2 TB is the largest configuration you can order from the listed kits.

What type of memory does the DL525 Gen13 use?
HPE DDR5 Smart Memory in two families: DDR5-8000 Registered (RDIMM) kits, Dual Rank x8 or x4 with CAS-64-64-64 EC8 timing, and 12800 MT/s Multiplexed Rank (MRDIMM) kits, Quad Rank x8 with CAS-52-52-52 EC8 timing. Both are HPE -B21 stand-alone kits.

How many DIMM slots does the DL525 Gen13 have?
16 slots on 16 channels, one DIMM per channel, all served by the single 6th Gen AMD EPYC 9006 processor. HPE supports populations of 1, 2, 4, 8, 12 or 16 DIMMs.

What is the maximum memory speed of the DL525 Gen13?
12800 MT/s with HPE Multiplexed Rank (MRDIMM) memory, and 8000 MT/s with DDR5 Registered (RDIMM) memory, as HPE states them in the memory table. Because the server runs one DIMM per channel, there is no two-DIMMs-per-channel speed reduction to account for.

Can I mix RDIMM and MRDIMM in a DL525 Gen13?
Treat them as separate families. HPE lists them as two supported types with different speeds, timings and rank structures, and sells them as different kits. Build on one family and expand with the same kit; the 64GB capacity exists in both families, so check which one is installed before adding to it.

What does the -F21 memory part number mean?
A factory-integration code. HPE's document says the -B21 SKUs are used when ordering stand-alone memory, and that each has a corresponding -F21 SKU used only when configuring a server with integrated DIMMs at the factory. Upgrades are always the -B21 kit.

✅ Looking for a specific DL525 Gen13 memory module? Browse our full selection below.

Why Global One?

• Trusted by thousands. Over 36,000 customers in 100+ countries trust Global One Technology to deliver mission-critical HP Enterprise hardware - including Fortune 500 businesses, schools, hospitals, and federal, state, and local goverment agencies.
• HPE is our specialty! We only sell genuine HP Enterprise parts.
• EASY ordering process. Purchase online now with credit card or PayPal!
• FAST shipping. Global One Technology ships orders received by 4pm ET the same day and offers NEXT DAY delivery to US customers.