CPU Comparison
Intel Xeon 6516P-B vs Intel Xeon 6738P
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
Performance Compared
Virtualization
Efficiency
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.
- Intel AMX accelerates matrix operations for inference and some training workloads.
- Integrated DSA, IAA, DLB, and QAT offload data movement and crypto tasks common in AI pipelines.
Content Creation
No data
Gaming
No data
- Xeon 6738P is a server/workstation processor without integrated graphics.
- Single-core performance is respectable but gaming workloads are not the target use case.
- Consumer platforms typically offer better price/performance for gaming.
Industry Impact
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
Pros
- 32 cores and 64 threads for high parallelism
- Large 144 MB L3 cache reduces memory latency
- Eight DDR5-6400 memory channels
- 88 PCIe 5.0 lanes for extensive I/O
- Integrated accelerators: AMX, DSA, IAA, DLB, QAT
- Multi-socket scalability up to 8 sockets
Cons
- High 270 W TDP requires robust cooling
- No integrated graphics
- Not intended for consumer desktop or gaming
- Xeon platforms incur higher total cost of ownership
- Limited upgrade path beyond the Xeon 6 series
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.
Intel Xeon 6738P
- AMD EPYC 8324PRival
Server
- AMD EPYC 9354PRival
Server
- AMD EPYC 9454PRival
Server
- AMD EPYC 9554Rival
Server
- AMD EPYC 9684XRival
Server
Slightly lower core count and TDP for smaller scale deployments.
Compare head-to-headMore balanced core count and power for moderate workloads.
Compare head-to-head- AMD EPYC 9254Alt
24-core option for lower-power requirements.
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 strong data center processor with high core count, large L3 cache, and accelerators for AI and analytics, provided you can accommodate its 270 W TDP and platform requirements.
Best for: Enterprise servers, multi-socket workstations, and cloud infrastructure requiring high memory bandwidth, I/O expansion, and built-in accelerators.
Read the full reviewFrequently Asked Questions
Which is better, Intel Xeon 6516P-B or Intel Xeon 6738P?
Based on our editorial ratings, the Intel Xeon 6738P comes out ahead with a score of 8.5/10. 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 6516P-B has the lowest rated TDP. Power draw across these chips: Intel Xeon 6516P-B (145 W), Intel Xeon 6738P (270 W).
Do Intel Xeon 6516P-B and Intel Xeon 6738P use the same socket?
No. They use different sockets (Intel Xeon 6516P-B: FCBGA4368, Intel Xeon 6738P: FCLGA4710), so each needs a compatible motherboard.
Which has more cores?
The Intel Xeon 6738P has the most cores. Core counts: Intel Xeon 6516P-B (20 cores), Intel Xeon 6738P (32 cores).