HPE ProLiant DL320 Gen12 Memory
Upgrade your HPE ProLiant DL320 Gen12 with genuine HPE DDR5 Smart Memory, in stock new and refurbished and tested before shipping. One processor owns all 16 DIMM slots — 8 channels at 2 DIMMs per channel — and every kit listed for the platform is a DDR5-6400 EC8 RDIMM.
DL320 Gen12 Memory Specifications
- Memory type: HPE DDR5 Smart Memory Registered (RDIMM), EC8 — the population rules state all DIMMs must be DDR5
- Slots: 16 DIMM slots, 8 channels, 2 DIMMs per channel, all served by the single processor
- Speed: a documented maximum of 6400 MT/s at 1 DIMM per channel and 5200 MT/s at 2 DIMMs per channel, capped by the processor — the E-core 6710E, 6731E, and 6746E are listed at DDR5-5600
- Kits offered: 16GB single-rank x8, 32GB dual-rank x8, 64GB / 96GB / 128GB dual-rank x4, and 256GB quad-rank x4 3DS, all DDR5-6400
- Maximum capacity: 4TB, stated as 16 × 256GB RDIMM — every processor listed supports up to 4TB
- Cooling: 96GB and larger DIMMs require high-performance fan kits, and 256GB DIMMs require high-performance fans
Decide between capacity and speed before you order. The QuickSpecs give a maximum of 6400 MT/s at 1 DIMM per channel and 5200 MT/s at 2 DIMMs per channel, and state the ceiling is set by the processor. Reaching the 4TB maximum means 16 × 256GB — and 256GB DIMMs require high-performance fans.
How much memory can the DL320 Gen12 hold?
| Configuration | Total capacity | Notes |
|---|---|---|
| 8 × 16GB | 128GB | Entry build, one DIMM per channel |
| 8 × 64GB | 512GB | The 1 DIMM per channel population |
| 16 × 64GB (all slots) | 1TB | Slots full — 2 DIMMs per channel |
| 16 × 128GB (all slots) | 2TB | Virtualization and container density |
| 16 × 256GB 3DS (all slots) | 4TB | The stated platform maximum |
The 64GB dual-rank kit is the sweet spot — eight fill every channel once and leave the second slot free. Take the speed figures as the document writes them: 6400 MT/s at 1 DIMM per channel, 5200 MT/s at 2, and the processor caps both.
Choosing the Right DL320 Gen12 Memory
- Pick capacity or speed deliberately. Going past 8 DIMMs puts a second module on a channel — where the 5200 MT/s figure applies.
- Populate in supported totals. The option notes permit totals of 1, 2, 4, 6, 8, or 16 DIMMs. The document's own population-order tables chart 1, 2, 4, 8, and 16.
- Mixing rules: x4 and x8 DIMMs can share a channel, non-3DS and 3DS cannot, and blanks go in every empty slot.
- Order the stand-alone SKU type: upgrades and spares use -B21 part numbers; the matching -F21 SKUs exist only for factory-integrated memory.
- Background reading: maximum memory configurations for Gen12 ProLiants, memory rank in HPE servers, and why memory speed matters.
Complete Your DL320 Gen12 Build
Pair memory with DL320 Gen12 processors, drives, storage controllers, networking adapters, and power supplies, or the full DL320 Gen12 parts page. Neighbors: DL320 Gen11 memory and DL360 Gen12 memory. Also: all Gen12 server memory and parts by server model.
DL320 Gen12 Memory FAQ
How much RAM does the HPE ProLiant DL320 Gen12 support?
Up to 4TB. The QuickSpecs state the maximum as 16 x 256GB RDIMM across the platform's 16 DIMM slots, and note that every processor listed supports up to 4TB.
What type of memory does the DL320 Gen12 use?
HPE DDR5 Smart Memory Registered DIMMs (RDIMMs), EC8, in 16GB, 32GB, 64GB, 96GB, 128GB, and 256GB 3DS capacities. Every kit listed is DDR5-6400, and the population rules state all DIMMs must be DDR5.
What is the maximum memory speed of the DL320 Gen12?
The QuickSpecs give a maximum of 6400 MT/s at 1 DIMM per channel and 5200 MT/s at 2 DIMMs per channel, and state the maximum is limited by the processor selection - the E-core 6710E, 6731E, and 6746E are each listed at DDR5-5600.
How many DIMMs can I install in a DL320 Gen12?
Sixteen, across 8 channels at 2 DIMMs per channel. The option notes permit total quantities of 1, 2, 4, 6, 8, or 16 DIMMs, and the document's population-order tables chart 1, 2, 4, 8, and 16. DIMM blanks must be installed in every empty slot.
Can I use DL320 Gen11 memory in the DL320 Gen12?
Only if the exact HPE part number is listed for this platform. The DL320 Gen12 QuickSpecs list DDR5-6400 EC8 RDIMM kits by part number - match those, and match your processor's rated speed.
Why do 96GB and larger DIMMs change my fan order?
Cooling. The QuickSpecs state that 96GB and higher DIMMs require high-performance fan kits, and that 256GB DIMMs require high-performance fans. Seven fan kits are required per server, so plan fans alongside the memory.
✅ Looking for a specific DL320 Gen12 memory module? Browse our full selection below.
Browse all models
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.
