CPU Comparison
Intel Xeon 6515P vs Intel Xeon 6516P-B
A side-by-side comparison of specs, performance and value. The Intel Xeon 6515P is a 16‑core, 32‑thread server and workstation processor from Intel’s Xeon 6 Granite Rapids‑SP family, built on Intel 3 chiplets with 72 MB of L3 cache, 8‑channel DDR5‑6400, and 88 PCIe 5.0 lanes, targeting single‑socket and dual‑socket compute‑intensive workloads.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Gaming
Virtualization
Efficiency
Specialized Performance
AI / ML
- AMX and AVX‑512 provide strong CPU‑based AI acceleration.
- Best suited for inference and small‑to‑medium models; not a replacement for GPUs in large‑scale training.
- Popular for LLM inference on CPU‑only stacks and OpenVINO‑optimized workloads.
- 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.
Content Creation
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Gaming
- Not designed for gaming; single‑threaded performance is good but not class‑leading.
- High PCIe lane count is overkill for most gaming GPUs.
- Better suited as a host CPU for GPU‑accelerated game servers or cloud gaming.
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Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- 16 P‑cores with strong single‑threaded performance
- 88 PCIe 5.0 lanes for dense GPU/NVMe configs
- 8‑channel DDR5‑6400 with up to 4 TB capacity
- AMX + AVX‑512 for AI and HPC
- Good single‑socket performance without dual‑socket complexity
Cons
- 150 W TDP may require strong cooling in 1U servers
- Premium price for I/O and memory that only matters if you use them
- No integrated graphics
- Locked multiplier, no manual overclocking
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 6515P
- AMD EPYC 9115Rival
Server / Workstation
- Compare head-to-headIntel Xeon 6511PRival
Server / Workstation
- Compare head-to-headIntel Xeon 6517PRival
Server / Workstation
- Intel Xeon w5‑3435XRival
Workstation
- AMD EPYC 9125Rival
Server / Workstation
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
A strong 16‑core Granite Rapids‑SP CPU for single‑socket servers and workstations, offering excellent memory bandwidth, PCIe 5.0, and AMX/AVX‑512 acceleration, but with a 150 W TDP and a price that only makes sense in platforms that fully exploit its I/O and memory.
Best for: Single‑socket servers or workstations that need maximum memory bandwidth, many PCIe 5.0 lanes, and AMX/AVX‑512 for AI or HPC.
Read the full reviewThe 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 reviewFrequently Asked Questions
Which is better, Intel Xeon 6515P or Intel Xeon 6516P-B?
Based on our editorial ratings, the Intel Xeon 6515P comes out ahead with a score of 8.6/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.
Which is faster for gaming, Intel Xeon 6515P or Intel Xeon 6516P-B?
For gaming, the Intel Xeon 6515P leads with a gaming performance score of 65/100 among Intel Xeon 6515P and Intel Xeon 6516P-B.
Which uses less power?
The Intel Xeon 6516P-B has the lowest rated TDP. Power draw across these chips: Intel Xeon 6515P (150 W), Intel Xeon 6516P-B (145 W).
Do Intel Xeon 6515P and Intel Xeon 6516P-B use the same socket?
No. They use different sockets (Intel Xeon 6515P: FCLGA4710, Intel Xeon 6516P-B: FCBGA4368), so each needs a compatible motherboard.
Which has more cores?
The Intel Xeon 6516P-B has the most cores. Core counts: Intel Xeon 6515P (16 cores), Intel Xeon 6516P-B (20 cores).
Which is faster in multi-core benchmarks?
The Intel Xeon 6515P posts the highest multi-core benchmark score. Multi-core results: Intel Xeon 6515P (25,000). Benchmark figures are approximate and workload-dependent.