CPU Comparison
Intel Xeon 6776P vs Intel Xeon 6781P
A side-by-side comparison of specs, performance and value. The Intel Xeon 6776P is a 64-core, 128-thread server processor based on the Granite Rapids-SP architecture, designed for dual-socket AI, HPC, and database servers that need high core counts, large cache, and wide PCIe 5.0 connectivity.
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Gaming
Virtualization
Efficiency
Specialized Performance
AI / ML
- Optimized as a host CPU for GPU‑accelerated AI systems (e.g., NVIDIA DGX B300).
- Supports Intel AMX, DL Boost, and AVX‑512 for CPU‑side AI inference.
- Best leveraged orchestrating GPUs rather than as a standalone AI accelerator.
- Intel AMX (Advanced Matrix Extensions) accelerates INT8 and BF16 matrix operations.
- Good for CPU-based inference and training where GPUs are not available.
- For large-scale training, GPUs or dedicated accelerators still dominate.
Content Creation
Gaming
- Server‑focused processor with no gaming‑oriented benchmarks.
- Single‑thread boost up to 3.9 GHz is decent, but gaming is not a target use case.
- Use desktop or workstation CPUs for gaming‑centric builds.
- No integrated graphics; requires a discrete GPU.
- Optimized for server and AI workloads, not gaming clock rates or latency.
- Gamers should choose mainstream desktop or workstation CPUs instead.
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- 64 cores and 128 threads for highly parallel workloads
- 336 MB L3 cache reduces memory bottlenecks
- 8‑channel DDR5/MRDIMM with up to 4 TB memory capacity
- 88 PCIe 5.0 lanes for GPUs, NICs, and NVMe
- Built‑in accelerators (QAT, DLB, DSA, IAA, AMX) for AI, networking, and analytics
- Priority Core Turbo to boost critical threads
Cons
- High 350 W TDP requires robust cooling and power delivery
- Premium pricing typical of high‑core‑count Xeon SKUs
- Locked multiplier; no overclocking headroom
- Overkill for lightly‑threaded or small‑scale workloads
- No integrated graphics; relies on discrete or BMC graphics
Pros
- 80 cores and 160 threads for highly parallel workloads.
- 8-channel DDR5/MRDIMM with up to 4 TB memory capacity.
- 136 PCIe 5.0 lanes for GPUs, NVMe, and CXL devices.
- Intel AMX, QAT, DLB, DSA, IAA accelerators for AI and I/O.
- Strong single-socket performance for virtualization and databases.
- CXL 2.0 support on the Xeon 6 platform for memory expansion.
Cons
- High 350 W TDP and demanding power/cooling requirements.
- Premium pricing; overkill for SMB or light server workloads.
- No integrated graphics; not suitable for basic desktop use.
- Locked multiplier; no enthusiast overclocking.
- Platform is new and may have early BIOS/firmware maturity considerations.
Competitors & Alternatives
Intel Xeon 6776P
- AMD EPYC 9534 (64‑core, 280 W)Rival
Server / General Purpose
- AMD EPYC 9575F (64‑core, 400 W, Zen 5)Rival
Server / AI‑Optimized
- Intel Xeon 6774P (64‑core, 350 W, higher base clock)Rival
Server / AI
- Intel Xeon 6781P (80‑core, 350 W)Rival
Server / AI+HPC
- AMD EPYC 9654 (96‑core, 360 W, Genoa)Rival
Server / High‑Core‑Count
Same core count and cache with higher base clock (2.5 GHz), better if you need slightly higher frequency at similar TDP.
Compare head-to-head36‑core, 205 W alternative with lower cost and power when you don’t need 64 cores.
Compare head-to-head- AMD EPYC 9534Alt
64‑core, 280 W competitor with 12 memory channels and 128 PCIe 5.0 lanes, offering different memory/I/O trade‑offs.
- AMD EPYC 9575FAlt
Higher‑frequency Zen 5 64‑core CPU at 400 W, aimed at GPU‑heavy AI servers where clock speed matters.
80‑core SKU with more performance headroom for extremely parallel workloads, at similar platform cost.
Compare head-to-head
Intel Xeon 6781P
- AMD EPYC 9565Rival
High-core-count server
- AMD EPYC 9255Rival
Mid-range server / cloud
- Compare head-to-headIntel Xeon 6980PRival
High-end dual-socket Granite Rapids-SP
- Compare head-to-headIntel Xeon 6780ERival
High-density E-core (Sierra Forest)
- Intel Xeon w9-3495XRival
Previous-gen HEDT/workstation
Our Verdict on Each
A high‑core‑count, cache‑rich server CPU tailored for GPU‑accelerated AI and HPC platforms, offering excellent memory bandwidth and I/O, but with a 350 W TDP and premium pricing that makes sense primarily in dense multi‑GPU servers where its features are fully utilized.
Best for: Dual‑socket AI or HPC servers with multiple high‑end GPUs where you need 64 cores, large cache, and maximum PCIe 5.0 lanes for I/O density.
Read the full reviewA very strong single-socket server CPU with excellent core count, memory bandwidth, and integrated AI accelerators, best suited for AI, virtualization, and data-center workloads where its 350 W TDP and platform cost are justified.
Best for: Single-socket servers and workstations for AI inference, virtualization, in-memory databases, or HPC where you need many cores, high memory bandwidth, and strong AI acceleration without going dual-socket.
Read the full reviewFrequently Asked Questions
Do Intel Xeon 6776P and Intel Xeon 6781P use the same socket?
Yes — all of these CPUs use the FCLGA4710 socket, so they share compatible motherboards.
Which has more cores?
The Intel Xeon 6781P has the most cores. Core counts: Intel Xeon 6776P (64 cores), Intel Xeon 6781P (80 cores).