OpenMetal XL v5 vs XL v4 — Same 64 Cores, Different Generation: How to Choose

Key Takeaways

• Core count is identical, so this is a qualitative choice. Both tiers are 64 cores / 128 threads across two sockets, so per-core software licensing and thread-level capacity planning carry across unchanged. You are choosing generation characteristics, not more compute.
• XL v5 delivers about 33 percent more memory bandwidth. Eight channels of DDR5-6400 (roughly 410 GB/s per socket) versus XL v4’s DDR5-4800 (roughly 307 GB/s per socket) is the single largest performance delta, decisive for bandwidth-bound work.
• XL v4 has more L3 cache. The Xeon Gold 6530 carries 160 MB of L3 against the 6530P’s 144 MB (5.0 MB versus 4.5 MB per core), so cache-resident working sets can favor v4.
• XL v5 runs cooler at higher clocks and adds I/O. 225 W per socket (versus 270 W) at a higher 2.3 GHz base, plus 88 PCIe 5.0 lanes per socket (versus 80) and 12 drive bays (versus 10).
• XL v5 widens CPU-side AI and offload. AMX adds the FP16 datatype and the DSA, IAA, DLB, and QuickAssist accelerators double to two instances each, so more inference and data-path work runs on the CPU. Both generations ship 1 TB at base with Intel TDX enabled out of the box.
• Both are single-tenant and fixed-cost. No shared tenancy, no per-core hourly meter. See fixed monthly pricing at openmetal.io/bare-metal-pricing.

Spec Comparison

Board and chassis identifiers are omitted intentionally. Memory note: XL v5 ships 1 TB in 16 of its 32 slots, so it reaches 2 TB by filling the open slots with standard 64 GB modules; XL v4 is fully populated at its 1 TB base (16 of 16 slots), so any increase requires replacing DIMMs with special-order higher-capacity modules. Reaching 4 TB on either server needs special-order RDIMMs running at DDR5-5200 (2 DIMMs per channel); the XL v4 4 TB figure is the processor addressable ceiling, not a validated stocked configuration.

Processor: Emerald Rapids vs Granite Rapids at the same core count

Both servers present 64 cores and 128 threads, so neither wins on core count. The XL v5’s Xeon 6530P is a Granite Rapids part on the Intel 3 node; the XL v4’s Xeon Gold 6530 is an Emerald Rapids part on Intel 7. The generational gain is not IPC (the per-core uplift is modest) but the platform: the XL v5 runs a higher 2.3 GHz base clock (versus 2.1 GHz) at a lower 225 W per socket (versus 270 W), which gives it more thermal headroom to hold clocks under sustained all-core vectorized load. On a densely populated rack, the 90 W lower per-node CPU envelope is real power and cooling budget.

The one processor metric where XL v4 leads is cache: 160 MB of L3 against the XL v5’s 144 MB. That is a deliberate consequence of the 6530P using a smaller Granite Rapids tile configuration, and it is the clearest reason a specific workload might prefer v4. Both parts expose AMX for CPU-side matrix math, but only the XL v5 adds the FP16 datatype and doubles the in-die DSA, IAA, DLB, and QuickAssist accelerators to two instances each, which matters for CPU inference and for offloading compression, encryption, and data movement off the general cores.

Memory: faster on v5, higher stocked ceiling on v4

This is the subsystem where the two servers most clearly diverge, and where the trade cuts both ways. XL v5 moves to DDR5-6400 across its 8 channels, delivering roughly 410 GB/s per socket against XL v4’s roughly 307 GB/s at DDR5-4800, about 33 percent more bandwidth at the same channel count and the same 1 TB base capacity. For in-memory databases, analytics engines, and any workload that streams through memory, that bandwidth is the headline reason to choose v5.

On capacity, XL v5 also has the more practical expansion path. Its 1 TB base occupies 16 of 32 DIMM slots, leaving 16 open, so it reaches a 2 TB stocked maximum by filling those slots with standard 64 GB modules, with a 4 TB ceiling available only through special-order 128 GB RDIMMs that run at the reduced DDR5-5200 in a 2-DIMM-per-channel layout. XL v4, by contrast, is already fully populated at its 1 TB base (16 of 16 slots), so any increase requires replacing DIMMs with special-order higher-capacity modules; its 4 TB figure is the processor addressable ceiling rather than a validated stocked configuration [VERIFY]. In practice, XL v5 offers both faster memory and the larger stocked footprint. Both servers use ECC memory for production and compliance workloads.

Storage: same capacity, newer drive generation on v5

Both servers ship four 6.4 TB Micron 7500 MAX NVMe data drives and a mirrored pair of 960 GB boot drives, and both keep boot and data on separate devices so an OS rebuild never touches customer data. The published data drive is the same on both generations. The differences are the as-built interface ceiling and bay count: XL v5 may ship the newer Micron 7600 MAX (PCIe 5.0) as a supply-driven as-built upgrade, while XL v4 stays on the PCIe Gen4 drive, and XL v5 offers 12 total drive bays against XL v4’s 10. The extra PCIe lanes on the v5 platform are what let those additional bays run alongside the network adapters at full width.

Representative performance for the XL v5 data drive (Micron 7500 MAX, 6.4 TB, per the Micron 7500 Tech Prod Spec):

Networking: identical on both

Networking is not a differentiator between these generations. Both ship the platform-wide default of two 10 Gbps uplinks, LACP-bonded for 20 Gbps of private bandwidth with failover across two switches, and both are upgradeable to four uplinks (40 Gbps private) for additional cost. Both carry the same network SLA and DDoS protection.

Egress pricing: 95th-percentile billing, not per-GB transfer

On both generations, OpenMetal bills public egress on the 95th-percentile model rather than metering every gigabyte transferred, which keeps sustained, egress-heavy workloads predictable in a way per-GB cloud billing does not.

Security, Compliance, and Confidential Computing

Both servers support Intel TDX for confidential computing on bare metal and Intel SGX with 128 GB of enclave memory, along with TME-MK for multi-key memory encryption. On confidential computing the two XL generations are on equal footing: both ship 1 TB at their base configuration, which meets OpenMetal’s TDX memory requirement, so TDX is enabled out of the box on each and activation is a firmware step rather than a memory upgrade. TDX on OpenMetal is a bare-metal capability; the OpenStack Hosted Private Cloud path does not provide TDX guest semantics, while SGX is available on both. Additional hardware security features on both generations include AES-NI, Boot Guard, and Control-Flow Enforcement Technology. See the SGX and TDX enablement guide for activation details.

HIPAA and regulatory compliance

OpenMetal offers HIPAA compliance at the organizational level, including BAAs, on both generations. Facility certifications (SOC, ISO, PCI DSS, NIST 800-53) are held by the facility operator at each location and should be attributed to the operator, not to OpenMetal. XL servers deployed in Ashburn, Los Angeles, Amsterdam, or Singapore are hosted in facilities carrying the relevant operator certifications for that region.

Which One Should You Choose

Both servers are current, supported, and single-tenant. Choose by the shape of your workload.

Choose XL v5 when

• Your workload is memory-bandwidth-bound. In-memory analytics, streaming pipelines, vectorized HPC kernels, and large in-memory databases benefit directly from the roughly 33 percent bandwidth increase (DDR5-6400).
• You run CPU-side AI inference. AMX FP16 and the doubled DSA/IAA/DLB/QAT accelerators widen the set of models and offloads that run efficiently on the CPU before you need a GPU.
• Power, thermals, or drive density matter. 225 W per socket at a higher base clock, 12 drive bays, and 88 PCIe 5.0 lanes per socket suit dense, sustained, all-NVMe deployments.
• You want the longest support runway. As the current generation, XL v5 has the longer forward road and the CXL 2.0 memory-expansion path.

Choose XL v4 when

• Your hot working set is cache-resident. The larger 160 MB L3 (versus 144 MB) can favor latency-sensitive in-memory indexes and tightly-looped kernels tuned to fit inside it, especially where the workload rarely spills to DRAM.
• You are standardizing an existing XL v4 fleet. Homogeneous NUMA layout, firmware, and configuration across a cluster can outweigh a single-node generational gain.
• Availability or budget favors the prior generation. If XL v4 is in stock in your target region or carries prior-generation pricing that fits your budget, it remains a strong, current-supported choice [VERIFY availability and pricing for your region].

If your workload is bandwidth-bound or AI-adjacent, default to XL v5, which also carries the larger stocked memory footprint. If its hot working set is cache-resident and benefits from the larger L3, look hard at XL v4. When in doubt, validate against your own workload before committing.

Deployment Options

Both XL generations deploy two ways. As a Bare Metal Dedicated Server, you get full root access, IPMI, no shared tenancy, and fixed monthly pricing, with pre-built images and price locks available. As part of a Hosted Private Cloud, XL nodes form a three-node OpenStack and Ceph cluster with Day 2 operations handled and no separate licensing costs.

Where to deploy

Deploy an XL v5 or XL v4 bare metal server in Ashburn, Los Angeles, Amsterdam, or Singapore. Proof of Concept clusters are available for testing. Ramp pricing is available for migrations from other providers. See fixed monthly pricing at openmetal.io/bare-metal-pricing.