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Intel Xeon 6774P specifications and in-depth review

Intel Xeon 6774P

Manufacturer: Intel

The Intel Xeon 6774P is a high-core-count server processor designed for demanding enterprise workloads. With 64 physical cores and 128 threads through multithreading support, it operates at a base clock speed of 2.5 GHz per core, with a turbo frequency reaching up to 3.9 GHz. Manufactured on a 3nm semiconductor process, the chip has a rated thermal design power of 350W and supports a maximum junction temperature of 100°C.

On the memory side, the Xeon 6774P supports DDR5 across eight memory channels, with a maximum supported speed of 8000 MHz and a total addressable memory capacity of up to 4000GB, including ECC memory support for enhanced data integrity. The processor includes a substantial 336MB of L3 cache, translating to 5.25MB per core, and connects to the platform via PCIe 5.0. Its instruction set support spans MMX, AVX, AVX2, FMA3, F16C, AES, SSE 4.1, and SSE 4.2, alongside NX bit functionality. Notably, the chip does not include integrated graphics and ships with a fixed clock multiplier of 25.

Pros
  • The 64-core, 128-thread configuration enables substantial parallel workload handling across compute-intensive server tasks
  • A massive 336 MB of L3 cache with 5.25 MB per core helps sustain throughput during data-heavy operations
  • Eight DDR5 memory channels with support for speeds up to 8000 MHz provide wide memory bandwidth for server workloads
  • ECC memory support adds a layer of data integrity protection suitable for enterprise and mission-critical environments
  • Maximum memory capacity of 4000GB allows for very large in-memory datasets without architectural limitations
  • The broad instruction set coverage, including AVX2, FMA3, and AES, enables hardware-accelerated vectorized and cryptographic workloads
Cons
  • A 350W TDP places significant demands on server cooling infrastructure and power delivery systems
  • The clock multiplier is locked, removing any possibility of frequency adjustment beyond factory settings
  • Turbo frequencies top out at 3.9 GHz, meaning single-threaded workloads that rely on high clock speeds may see limited throughput
  • No integrated graphics means a discrete solution is required for any display output, adding dependency on additional hardware
  • The 3nm fabrication node and high core count may impose strict platform and motherboard compatibility requirements
Who is this for?

This processor is well-matched to environments that demand sustained multi-threaded throughput, such as large-scale virtualization platforms and containerized workloads where the 64-core, 128-thread configuration can be fully utilized. Its support for ECC DDR5 memory across eight channels with a maximum capacity of 4000GB makes it a strong fit for in-memory databases, data analytics pipelines, and enterprise applications that require both bandwidth and data integrity. The inclusion of AES, AVX2, and FMA3 instruction sets also makes it appropriate for cryptographic processing and vectorized scientific computing workloads running on server-grade infrastructure.

Who is this NOT for?

This processor is a poor fit for scenarios that depend on high single-threaded clock speeds, as the turbo frequency ceiling of 3.9 GHz leaves latency-sensitive or single-core-bound applications with limited headroom. Its 350W TDP makes it entirely unsuitable for power-constrained environments, edge deployments, or any rack infrastructure not purpose-built for high thermal and power loads. Additionally, the absence of integrated graphics means it cannot serve any role where basic display output is needed without a dedicated graphics solution, ruling it out for general-purpose workstations or lightweight deployment scenarios.

General info:

Thermal Design Power (TDP) 350W
semiconductor size 3 nm
PCI Express (PCIe) version 5
Supports 64-bit ✓
CPU temperature 100 °C
Has integrated graphics ✕

The Intel Xeon 6774P carries a Thermal Design Power (TDP) of 350W and is built on a 3nm semiconductor process, reflecting a compact fabrication node for a processor in this class. It supports the 64-bit instruction architecture and connects to the platform through PCIe 5.0, enabling high-bandwidth peripheral communication. The chip has a maximum rated CPU temperature of 100°C and does not include integrated graphics, making a discrete graphics solution necessary for any display output.

Performance:

CPU speed 64 x 2.5 GHz
CPU threads 128 threads
turbo clock speed 3.9GHz
L3 cache 336 MB
clock multiplier 25
Has an unlocked multiplier ✕
L3 core 5.25 MB/core
Turbo Boost version 2

The Intel Xeon 6774P operates across 64 cores at a base clock speed of 2.5 GHz each, yielding 128 threads in total, while Turbo Boost 2 allows the processor to reach up to 3.9 GHz under appropriate conditions. The chip is equipped with a generous 336 MB of L3 cache, which breaks down to 5.25 MB per core, helping to reduce memory latency during sustained workloads. The clock multiplier is set to 25 and is not unlocked, meaning the processor operates within its fixed frequency boundaries without support for manual overclocking.

Memory:

Supports ECC memory ✓
DDR memory version 5
RAM speed (max) 8000 MHz
maximum memory amount 4000GB
memory channels 8

The Intel Xeon 6774P uses DDR5 memory across eight independent memory channels, allowing for wide parallel data access suited to bandwidth-intensive server environments. It supports RAM speeds of up to 8000 MHz and can address a maximum total memory capacity of 4000GB. The processor also supports ECC (Error-Correcting Code) memory, which enables automatic detection and correction of certain types of data errors, a feature commonly required in enterprise and mission-critical deployments.

Features:

uses multithreading ✓
instruction sets MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, SSE 4.2
Has NX bit ✓

The Intel Xeon 6774P supports multithreading, allowing each physical core to handle multiple threads simultaneously for more efficient parallel processing. The processor includes the NX bit security feature, which helps prevent certain classes of malicious code execution by marking memory regions as non-executable. It also supports a broad range of instruction sets — MMX, F16C, FMA3, AES, AVX, AVX2, SSE 4.1, and SSE 4.2 — covering capabilities from legacy multimedia extensions to modern vectorized and cryptographic operations.

Benchmarks:

Final Verdict

The Intel Xeon 6774P is a processor built with a clear and narrow purpose: delivering sustained, parallel throughput at scale within server and enterprise infrastructure. Its 64-core architecture paired with eight-channel DDR5 memory support and up to 4000GB capacity positions it firmly in the domain of data-intensive and virtualization-heavy deployments where raw thread count and memory bandwidth are the primary currencies. The locked multiplier, high thermal envelope, and modest turbo frequency signal that this is not a chip for flexible or general-purpose roles — it is engineered for specific workloads in controlled, high-capacity environments. For organizations running large-scale server workloads that demand reliability, memory integrity through ECC support, and broad instruction set coverage, the Xeon 6774P represents a technically coherent and well-specified solution.