HPE ProLiant DL380 Gen12 vs DL320 Gen12: Dual-Socket Flagship or Single-Socket Value?

The HPE ProLiant DL380 Gen12 and DL320 Gen12 share the same Intel Xeon 6 platform, DDR5-6400 memory, PCIe Gen5 I/O and iLO 7 management, but they sit at opposite ends of the rack server spectrum. The DL380 is a 2U dual-socket workhorse built to scale, while the DL320 is a 1U single-socket server engineered for cost efficiency and power-conscious deployments. This comparison helps you right-size compute so you pay for the cores, memory and expansion you will actually use.

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The short answer

Choose the HPE ProLiant DL380 Gen12 when your workload needs two sockets, large memory footprints, heavy PCIe Gen5 expansion or GPU acceleration, such as virtualization consolidation, large databases and mixed enterprise stacks. Choose the DL320 Gen12 when a single high-core-count Xeon 6 covers the job and you want lower acquisition cost, lower power draw and 1U density, ideal for edge sites, web and app tiers, dedicated workloads and ROBO. In short, the DL380 wins on headroom and consolidation, while the DL320 wins on price-per-server and efficiency. Uniqcli can quote either, or a mixed fleet, configured to your exact workload.

HPE ProLiant DL380 Gen12 vs HPE ProLiant DL320 Gen12, head to head

HPE ProLiant DL380 Gen12

HPE ProLiant DL320 Gen12

Socket count

Up to two Intel Xeon 6 processorsadvantage

Single Intel Xeon 6 processor

Form factor and density

2U chassis with room for storage, GPUs and I/O

1U chassis maximizing rack density per wattadvantage

Maximum compute headroom

Two CPUs aggregate far more cores and threads for consolidationadvantage

One CPU, strong for right-sized single-node workloads

Memory capacity

32 DIMM slots, scaling to multi-terabyte DDR5advantage

Fewer DIMM slots, ample for single-socket workloads

PCIe Gen5 expansion

More total slots plus OCP for high I/O and acceleratorsadvantage

Up to 6 PCIe Gen5 slots plus OCP, generous for 1U

GPU and accelerator support

Supports multiple double-wide GPUs for AI and accelerationadvantage

Limited acceleration suited to lighter inference or none

Acquisition and operating cost

Higher cost reflecting dual-socket capability

Lower cost and lower power for cost-sensitive deploymentsadvantage

Right-sizing flexibility

Best when you need to grow into the platform

Best when the workload fits one socket cleanly today

Specifications side by side

Form factor: 2U rack; 1U rack
Processor family: Intel Xeon 6; Intel Xeon 6
Sockets: Up to 2; 1
Max cores per CPU: Up to 144 E-cores (or high-core P-core SKUs); Up to 144 E-cores (or high-core P-core SKUs)
Memory type: DDR5 up to 6400 MT/s; DDR5 up to 6400 MT/s
DIMM slots: 32 DIMM slots; Fewer slots (single-socket layout)
Max memory: Up to 8 TB; Up to 4 TB
PCIe generation: PCIe Gen5; PCIe Gen5
PCIe slots: Up to 6x x16 PCIe Gen5 plus 2 OCP 3.0; Up to 6 PCIe Gen5 slots plus 2 OCP 3.0
GPU support: Up to 3 double-wide or 8 single-wide GPUs; Limited / lighter acceleration
Storage options: SFF, LFF and EDSFF E3.S configurations; Compact SFF / EDSFF for 1U
Management: HPE iLO 7; HPE iLO 7

Where HPE ProLiant DL380 Gen12 wins

Dual-socket Xeon 6 delivers far more aggregate cores for VM and container density
32 DIMM slots scale to large in-memory and database footprints
More PCIe Gen5 expansion and multi-GPU support for accelerated and I/O-heavy workloads
2U chassis offers serious storage flexibility across SFF, LFF and EDSFF
Headroom to grow, so one platform covers many enterprise roles

Where HPE ProLiant DL320 Gen12 wins

Single-socket design lowers acquisition cost and licensing exposure
1U form factor maximizes rack density and improves performance-per-watt
High-core-count Xeon 6 still handles demanding single-node workloads
Lower power draw suits edge, branch and power-constrained sites
Up to 6 PCIe Gen5 slots is generous expansion for a 1U server

Which one should you buy?

Large-scale virtualization or VDI consolidation on one node

Pick HPE ProLiant DL380 Gen12. Two sockets and 32 DIMM slots maximize VM density per host, reducing the number of servers and hypervisor licenses you manage.

Edge, branch or ROBO compute where space and power are tight

Pick HPE ProLiant DL320 Gen12. A 1U single-socket server keeps cost and power low while still delivering modern Xeon 6 performance for site-local workloads.

Large in-memory databases, analytics or memory-bound applications

Pick HPE ProLiant DL380 Gen12. Up to 8 TB of DDR5 across 32 DIMM slots gives the memory capacity that single-socket platforms cannot match.

Dedicated web, app or microservices tier that fits one socket

Pick HPE ProLiant DL320 Gen12. When a single high-core-count CPU covers the workload, the DL320 avoids paying for a second socket you would not fully use.

AI inference, GPU acceleration or I/O-intensive workloads

Pick HPE ProLiant DL380 Gen12. More PCIe Gen5 slots and multi-GPU support give the DL380 the expansion the 1U DL320 cannot provide.

Frequently asked

What is the main difference between the DL380 Gen12 and the DL320 Gen12?

The HPE ProLiant DL380 Gen12 is a 2U dual-socket server built for expansion and consolidation, while the DL320 Gen12 is a 1U single-socket server built for cost efficiency and density. Both use Intel Xeon 6, DDR5-6400 memory, PCIe Gen5 and iLO 7, so the decision comes down to how much compute, memory and expansion you actually need.

Is the DL320 Gen12 single-socket or dual-socket?

The DL320 Gen12 is a single-socket server with one Intel Xeon 6 processor. If you need a second socket for higher core counts or larger memory, the dual-socket DL380 Gen12 is the right choice.

How much memory can each server hold?

The DL380 Gen12 offers 32 DIMM slots and scales to roughly 8 TB of DDR5, while the single-socket DL320 Gen12 has fewer DIMM slots and tops out lower, around 4 TB. For memory-bound workloads the DL380 has a clear advantage.

Do both servers support PCIe Gen5 and GPUs?

Yes, both support PCIe Gen5. The 2U DL380 Gen12 has more total expansion and supports multiple double-wide GPUs for acceleration, while the 1U DL320 Gen12 offers up to 6 PCIe Gen5 slots but more limited GPU capacity due to its compact form factor.

Which server is more power efficient?

For a single right-sized workload, the 1U single-socket DL320 Gen12 generally delivers better performance-per-watt and lower total power draw. The DL380 Gen12 can be more efficient on a per-VM basis when you consolidate many workloads onto its dual sockets.

Can I right-size by mixing both models in one fleet?

Absolutely. Many customers run DL380 Gen12 nodes for consolidation and database tiers and DL320 Gen12 nodes for edge, web or dedicated workloads. Uniqcli can design and quote a mixed Gen12 fleet so each role gets the right platform without overspending.

Are these servers available on TAA, GSA or SAP/FAR channels contracts?

As an authorized HPE reseller, Uniqcli can source both the DL380 Gen12 and DL320 Gen12 through public-sector procurement vehicles, including TAA-compliant configurations and GPC, SAP, and FAR contract options. Contact us with your contract requirements and we will quote accordingly.

Which one should I buy for a new virtualization cluster?

For most virtualization or VDI clusters where density and consolidation matter, the DL380 Gen12 is the stronger fit thanks to dual sockets and large memory capacity. If your VMs are light and you prefer more, smaller nodes, a fleet of DL320 Gen12 servers can also work. Uniqcli can model both approaches for your environment.

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