CPU Comparison
Intel Xeon 6556P-B vs Intel Xeon 6737P
A side-by-side comparison of specs, performance and value. The Intel Xeon 6556P-B is a 36-core, 72-thread server SoC from the Granite Rapids-D family, built on Intel 3 process for networking and edge appliances, with integrated vRAN Boost, QAT, DLB and DSA accelerators, DDR5-6400 memory and 48 PCIe 5.0/4.0 lanes in a BGA4368 package.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Multi-threaded throughput is high for RAN and AI inference, but general productivity benchmarks are not available for this niche SoC.
SPEC CPU2017 results exist for Xeon 6737P platforms but are server-focused; generic productivity scores are not meaningful.
Gaming
Not a target market; no practical gaming use cases.
Not intended for gaming; no relevant gaming benchmarks for this server SKU.
Virtualization
Strong VT-x/VT-d/EPT and large memory support suit NFV and containerized network functions, but vendor-specific tuning is required.
Strong VM density expected based on 32 cores, 64 threads, and 4 TB memory capacity, but no standardized virtualization score can be claimed without official benchmarks.
Efficiency
Intel claims up to 70% better performance-per-watt vs previous-gen Xeon D for vRAN workloads, but absolute 215 W TDP is high for constrained edge environments.
270 W TDP is high for a 32-core server CPU; efficiency is competitive only within the Xeon 6 P-core family and versus prior Xeon generations, not versus low-power SKUs.
Specialized Performance
AI / ML
- AMX and DL Boost accelerate INT8/BF16 inference
- Xeon 6 SoC family claims up to 4.3x inference speed vs older Xeon D-2899NT on some models
- Best used with small to medium models; large training still GPU-bound
- Intel AMX with BF16/INT8 support accelerates deep learning inference
- Two AVX-512 FMA units per core benefit vectorized AI and HPC kernels
- No dedicated AI accelerator; heavy AI training still better suited to GPUs
Content Creation
Gaming
- No integrated graphics
- Optimized for server and network workloads, not gaming
- Gaming not a design target
- Server processor not targeted at gaming
- No integrated graphics
- No official gaming benchmarks
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- 36 P-cores with 72 threads provide strong multi-threaded performance for RAN and edge AI
- Integrated vRAN Boost, QAT, DLB and DSA reduce need for discrete offload cards
- DDR5-6400 and 4 memory channels deliver high bandwidth and capacity for edge workloads
- 48 PCIe 5.0/4.0 lanes support high-speed NICs and NVMe storage
- Intel 3 process and SoC integration improve performance-per-watt vs older Xeon D
- Rich security features including TDX, total memory encryption, SGX and crypto acceleration
Cons
- 215 W TDP is high for some edge environments
- BGA4368 socket limits reuse to proprietary or highly specialized boards
- No integrated graphics; not suitable for graphical workloads
- Niche market focus means fewer consumer-oriented boards and less community support
- Pricing is high compared to general-purpose server CPUs with similar core counts
Pros
- 32 high-performance P-cores with 4 GHz max turbo
- Intel AMX and dual AVX-512 FMA units for AI and HPC
- 88 PCIe 5.0 lanes with CXL 2.0 platform support
- 8-channel DDR5-6400 up to 4 TB per socket
- Rich accelerator set (QAT, DLB, DSA, IAA) offloads crypto, analytics, and streaming
- Granite Rapids-SP platform with UPI 2.0 for coherent dual-socket designs
Cons
- High 270 W TDP requires robust cooling and power design
- Platform and CPU cost are significant compared to previous-gen Xeons
- Locked multiplier limits enthusiast-style overclocking
- No integrated graphics; not suitable for headless or lightweight client use
- Full performance potential depends on server firmware and OS support for Speed Select and accelerators
Competitors & Alternatives
Intel Xeon 6556P-B
- AMD EPYC 8324P (32-core, 180–225 W)Rival
Edge / telco server
- AMD EPYC 8434P (48-core, 200 W)Rival
Edge / telco server
- Intel Xeon 6553P-B (36-core, 235 W)Rival
Networking and edge SoC
- Intel Xeon D-2899NT (22-core, 135 W)Rival
Previous-gen edge SoC
- Intel Xeon 6563P-B (38-core, 235 W)Rival
Networking and edge SoC
- AMD EPYC 8324PAlt
Lower TDP range (155–225 W) and SP6 platform with similar edge/telco focus; good alternative where power efficiency matters more than integrated accelerators.
Same Granite Rapids-D family with slightly higher clocks (2.6 GHz base, 4 GHz turbo) and same core count if you need more frequency headroom.
Compare head-to-head- Intel Xeon D-2899NTAlt
Lower power (135 W) and mature platform if you don’t need DDR5, PCIe 5.0 or the latest accelerators.
- Intel Xeon 6546P-B (32-core, 195 W)Alt
Lower core count and TDP for less demanding edge workloads while staying in the same Granite Rapids-D ecosystem.
- AMD EPYC 8434PAlt
Higher core count (48) with similar telco/edge focus if you need more threads and can accommodate a slightly higher TDP.
Intel Xeon 6737P
- AMD EPYC 7573XRival
Server (32-core, Milan-X)
- AMD EPYC 9384XRival
Server (Genoa-X, 32-core)
- Intel Xeon Gold 6448YRival
Server (4th Gen Xeon Scalable, 32-core)
- Intel Xeon Gold 6438MRival
Server (4th Gen Xeon Scalable, 32-core)
- Intel Xeon 6730PRival
Server (Xeon 6700P, 32-core, lower turbo)
Same 32-core Granite Rapids-SP family with higher 4.2 GHz turbo for slightly better per-thread performance.
Compare head-to-headLower 2.5 GHz base and 245 W TDP for slightly better power efficiency at reduced peak clocks.
Compare head-to-head
Our Verdict on Each
A highly integrated edge SoC that brings strong multi-threaded performance and dedicated accelerators for networking and AI workloads, but with high power and a niche platform that limits broader reuse.
Best for: Building or specifying 5G vRAN, edge AI or network security appliances where integrated accelerators and high core count reduce total system complexity.
Read the full reviewA strong Xeon 6 P-core SKU for two-socket servers that need high per-core performance, AMX acceleration, and plenty of PCIe 5.0 connectivity, though its 270 W TDP and platform cost demand careful power and cooling planning.
Best for: Dual-socket servers running virtualization, in-memory databases, or mixed AI/HPC workloads that can leverage AMX and high PCIe 5.0 lane counts.
Read the full reviewFrequently Asked Questions
Which is better, Intel Xeon 6556P-B or Intel Xeon 6737P?
Based on our editorial ratings, the Intel Xeon 6737P comes out ahead with a score of 8.7/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.
Which uses less power?
The Intel Xeon 6556P-B has the lowest rated TDP. Power draw across these chips: Intel Xeon 6556P-B (215 W), Intel Xeon 6737P (270 W).
Do Intel Xeon 6556P-B and Intel Xeon 6737P use the same socket?
No. They use different sockets (Intel Xeon 6556P-B: FCBGA4368, Intel Xeon 6737P: FCLGA4710), so each needs a compatible motherboard.
Which has more cores?
The Intel Xeon 6556P-B has the most cores. Core counts: Intel Xeon 6556P-B (36 cores), Intel Xeon 6737P (32 cores).