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Intel Xeon 6746E specifications and in-depth review

Intel Xeon 6746E

Manufacturer: Intel

The Intel Xeon 6746E is a server-grade processor designed for demanding enterprise workloads, sitting firmly in the enterprise CPU segment. Built on a 5 nm semiconductor process, it integrates 112 cores running at a base clock of 2 GHz with a turbo frequency reaching 2.7 GHz, reflecting a design oriented toward thread-heavy, parallel computing tasks rather than single-core peak performance.

On the memory side, the Xeon 6746E supports DDR5 memory at up to 5600 MHz across eight channels, with a maximum capacity of 1000 GB and a peak bandwidth of 409.6 GB/s — figures that reflect its targeting of memory-intensive server environments. ECC memory support is included, and the processor carries a 96 MB L3 cache alongside PCIe 5.0 connectivity with a bus transfer rate of 16 GT/s. Its instruction set support spans MMX, AVX, AVX2, AES, FMA3, F16C, SSE 4.1, and SSE 4.2, with the NX bit enabled. The chip operates up to a maximum temperature of 102 °C under a 250W thermal envelope, and it does not include integrated graphics.

Pros
  • Supports up to 1000 GB of DDR5 memory across eight channels, accommodating workloads with very large memory footprints
  • ECC memory support helps maintain data integrity in server environments where memory errors can have serious consequences
  • The 96 MB L3 cache provides a substantial shared cache pool for a 112-core processor, helping to reduce memory latency across parallel workloads
  • PCIe 5.0 support enables high-bandwidth connectivity with compatible storage and networking hardware
  • Hardware-accelerated AES instruction support allows encryption and decryption to be handled more efficiently at the instruction level
  • NX bit support provides hardware-enforced memory protection against certain code execution exploits
Cons
  • A 250W TDP places significant demands on server cooling infrastructure and power delivery systems
  • The base clock of 2 GHz is relatively modest, and the turbo frequency reaches only 2.7 GHz, leaving limited headroom for tasks that benefit from higher single-thread speeds
  • At 0.86 MB of L3 cache per core, the per-core cache allocation is constrained given the 112-core count, which may affect cache-sensitive workloads
  • No integrated graphics means a discrete or remote management solution is required for display output during system setup or troubleshooting
Who is this for?

This processor is well-matched to environments that demand massive thread-level parallelism, such as large-scale virtualization platforms, cloud infrastructure, and HPC clusters where workloads can be distributed across many cores simultaneously. Its support for up to 1000 GB of ECC DDR5 memory across eight channels makes it a strong fit for in-memory databases, data analytics engines, and scientific computing tasks that require both large memory capacity and data integrity. Organizations running encryption-heavy or vector-intensive workloads will also benefit from the processor's hardware AES acceleration and broad AVX/AVX2 instruction set coverage.

Who is this NOT for?

This processor is a poor fit for use cases that depend on high single-thread clock speeds, as its base frequency of 2 GHz and turbo ceiling of 2.7 GHz leave little headroom for latency-sensitive or single-threaded applications. Environments with constrained cooling capacity or limited power infrastructure will likely struggle to manage its 250W thermal design power, making it unsuitable for compact or low-power server configurations. It is also not appropriate for any deployment that requires integrated display output, since the processor includes no integrated graphics and would require additional hardware to handle even basic video output needs.

General info:

Thermal Design Power (TDP) 250W
semiconductor size 5 nm
PCI Express (PCIe) version 5
Supports 64-bit ✓
CPU temperature 102 °C
Has integrated graphics ✕

The Intel Xeon 6746E is built on a 5 nm semiconductor process and carries a Thermal Design Power of 250W, reflecting the thermal demands typical of high-core-count server processors. It operates with a maximum CPU temperature of 102 °C and fully supports 64-bit computing. Connectivity is handled through PCIe 5.0, enabling high-bandwidth communication with compatible hardware. The processor does not include integrated graphics, which is consistent with its role as a dedicated compute unit in server environments.

Performance:

CPU speed 112 x 2 GHz
CPU threads 112 threads
turbo clock speed 2.7GHz
L3 cache 96 MB
L3 core 0.86 MB/core

The Intel Xeon 6746E features 112 cores and 112 threads, each running at a base clock of 2 GHz, for a combined CPU speed of 112 x 2 GHz. When workloads demand it, the processor can reach a turbo clock speed of 2.7 GHz. Backing this core count is a substantial 96 MB L3 cache, which works out to approximately 0.86 MB per core, providing a reasonable per-core cache allocation across the full array of cores.

Memory:

Supports ECC memory ✓
maximum memory bandwidth 409.6 GB/s
DDR memory version 5
RAM speed (max) 5600 MHz
maximum memory amount 1000GB
memory channels 8
bus transfer rate 16 GT/s

The Intel Xeon 6746E supports DDR5 memory at speeds up to 5600 MHz across eight memory channels, enabling a peak bandwidth of 409.6 GB/s. The processor can address up to 1000 GB of total memory, making it well-suited for workloads that rely on large memory pools. ECC memory is supported, adding a layer of data integrity for server environments, while the bus transfer rate of 16 GT/s facilitates fast data movement between the processor and connected components.

Features:

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

The Intel Xeon 6746E supports a broad set of instruction sets including MMX, AVX, AVX2, FMA3, F16C, AES, SSE 4.1, and SSE 4.2, covering a range of workloads from vectorized arithmetic and floating-point operations to hardware-accelerated encryption. The presence of NX bit support adds a hardware-level memory protection mechanism that helps prevent certain classes of malicious code execution, a relevant consideration for server deployments handling sensitive operations.

Benchmarks:

Final Verdict

The Intel Xeon 6746E is a processor built with a clear and deliberate purpose: serving the demanding compute and memory requirements of enterprise server environments. Its 112-core architecture paired with support for up to 1000 GB of ECC DDR5 memory across eight channels makes it a credible choice for organizations running large-scale virtualization, data-intensive analytics, or parallel scientific workloads. That said, its modest clock frequencies and substantial thermal envelope mean it is best deployed in infrastructure that is purpose-built to accommodate it. For the right environment, the Xeon 6746E delivers a well-rounded server-class feature set, but organizations with single-threaded workloads or limited power headroom should evaluate whether its specifications genuinely align with their operational needs.

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