CPU Comparison
Intel Xeon 6516P-B vs Intel Xeon 6546P-B
A side-by-side comparison of specs, performance and value. The Intel Xeon 6516P-B is a 20-core, 40-thread server processor built on the Intel 3 process, part of the Xeon 6 family (Granite Rapids-D) with quad-channel DDR5, 48 PCIe lanes (CPCIe 5.0), and integrated accelerators for networking and edge workloads.
The Bottom Line
Overview & Launch
Specifications Compared
Specialized Performance
AI / ML
- Intel AMX enabled for matrix operations.
- AVX-512 with two FMA units per core.
- Suited as a host CPU for GPU-accelerated AI and on-CPU inference.
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Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- 20 performance cores with Hyper-Threading
- Intel 3 manufacturing for better performance-per-watt
- Quad-channel DDR5-4800 with up to 1.13 TB support
- 48 PCIe lanes (32 Gen 5 + 16 Gen 4)
- Integrated Intel QuickAssist Technology
- Intel vRAN Boost for RAN workloads
- DSA and DLB accelerators on-die
- Intel AMX for AI inference workloads
- Comprehensive security features (TDX, SGX, TME)
- Strong I/O and accelerator set for edge appliances
Cons
- BGA4368 package is not socket-upgradeable
- No integrated graphics
- Locked multiplier
- Single-socket only
- Limited public benchmark data as of early 2026
Competitors & Alternatives
Intel Xeon 6516P-B
- AMD EPYC 8534PRival
Server
- AMD EPYC 8324PRival
Server
- AMD EPYC 9354PRival
Server
- AmpereOneRival
Server
- NVIDIA GraceRival
Server/HPC
Same package with lower TDP for power-constrained designs.
Compare head-to-head- Intel Xeon 6523P-BAlt
Higher core count and TDP for more demanding workloads in the same BGA family.
- Intel Xeon 6515P (LGA4710)Alt
Socketed alternative in Xeon 6 6500P series with similar positioning but upgradeable socket.
Higher clock and different socket for single-socket servers prioritizing frequency.
Compare head-to-head- AMD EPYC 8004-seriesAlt
Competing single-socket platforms with PCIe 5 and DDR5.
Our Verdict on Each
The Xeon 6516P-B balances core count, I/O, and on-die accelerators for edge and network platforms, making it a strong fit for single-socket appliances that need PCIe Gen 5 and integrated QuickAssist. General-purpose data-center buyers may prefer the LGA4710-based 6700/6500P series for socket flexibility.
Best for: Building or upgrading single-socket edge/network servers that need PCIe Gen 5, DDR5, and built-in accelerators (QAT/vRAN Boost).
Read the full reviewA capable, accelerator-rich single-socket server CPU targeted at communications and edge deployments; its value depends on your workload's use of QAT, DSA, DLB and AMX, otherwise it may be overkill versus lighter Xeon 6 SKUs.
Read the full reviewFrequently Asked Questions
Which uses less power?
The Intel Xeon 6516P-B has the lowest rated TDP. Power draw across these chips: Intel Xeon 6516P-B (145 W), Intel Xeon 6546P-B (195 W).
Do Intel Xeon 6516P-B and Intel Xeon 6546P-B use the same socket?
Yes — all of these CPUs use the FCBGA4368 socket, so they share compatible motherboards.
Which has more cores?
The Intel Xeon 6546P-B has the most cores. Core counts: Intel Xeon 6516P-B (20 cores), Intel Xeon 6546P-B (32 cores).