Quick Verdict
The Xeon w5-2555X brings 14 Golden Cove cores, 64 PCIe 5.0 lanes, and quad-channel DDR5 to a single-socket workstation, making it well-suited for I/O-heavy professional workloads. It lacks integrated graphics, has a 210 W base power draw, and requires a W790-class platform. Ideal for users who need PCIe 5.0 expansion and ECC memory, though mainstream desktops often deliver better single-thread performance per dollar.
Overview
Launch
2024
Status
LaunchedGeneration
W-2500 (Sapphire Rapids-WS refresh, 2024)
Market
Workstation
The Intel Xeon w5-2555X is a 14-core, 28-thread workstation processor in the W-2500 family (Sapphire Rapids-WS refresh), offering 64 PCIe 5.0 lanes, quad-channel DDR5-4800 ECC support, and a 33.75 MB Intel Smart Cache. It targets professional workloads that benefit from high I/O bandwidth, large memory capacity, and instruction-set extensions such as AVX-512 and AMX, while providing enterprise-grade reliability features like Intel vPro Enterprise, AMT, and total memory encryption.
The Intel Xeon w5-2555X targets single-socket workstations where expansion and memory bandwidth matter. It ships with 14 performance cores and Hyper-Threading, a 3.3 GHz base and up to 4.
8 GHz max turbo, 33.75 MB of L3 cache, and support for 2 TB of quad-channel DDR5-4800 with ECC. The CPU provides 64 direct PCIe 5.
0 lanes, DMI 4.0 to the chipset, and Intel AMX for matrix workloads, alongside vPro Enterprise and AMT for fleet management. It does not include integrated graphics, and the 210 W base/252 W turbo power envelope demands robust cooling.
Specifications
Performance
Excels in multi-threaded creator applications such as Blender, Premiere Pro, and DaVinci Resolve, especially with AVX-512 and AMX-enabled workloads.
High core count and ECC memory support make it strong for running multiple VMs and containers, with VT-x, VT-d, and EPT present.
With a modern GPU, the w5-2555X can run games smoothly thanks to reasonable clocks and strong single-thread performance, but it is not optimized for gaming and does not provide integrated graphics.
A 210 W base and 252 W turbo power envelope means higher power draw than many mainstream desktop CPUs; efficiency is acceptable for a workstation part but not class-leading.
- •Requires a discrete GPU; no iGPU present.
- •Single-thread performance is competitive but not class-leading.
- •Platform and power draw are overkill for a dedicated gaming build.
- •Intel AMX accelerates matrix operations, useful for CPU-based inference and small-to-medium models.
- •AVX-512 VNNI and bfloat16 enhance deep learning kernels.
- •For large-scale training, a dedicated GPU is recommended.
Architecture
Intel 7
Process Node
Sapphire Rapids (WS)
Codename
14C / 28T
Core Config
33.75 MB
L3 Cache
0 W
TDP
Architecture Overview
The w5-2555X belongs to the Sapphire Rapids-WS family (workstation) and uses the Golden Cove microarchitecture. It is a monolithic die in the W-2400/W-2500 tier, unlike the multi-die W-3400/W-3500 line. This design simplifies latency-sensitive workloads while still providing up to 64 PCIe 5.0 lanes from the CPU, along with DMI 4.0 to the chipset.
CPU Design
14 performance cores (no E-cores) with Hyper-Threading, allowing 28 threads. It includes Intel DL Boost (VNNI), AMX, and two AVX-512 FMA units to accelerate AI and HPC kernels.
Memory Subsystem
Quad-channel DDR5-4800 interface with ECC support and up to 2 TB maximum memory. The four-channel configuration provides roughly 153.6 GB/s peak bandwidth, which benefits memory-bound workloads such as large dataset analysis and rendering.
PCIe & I/O
64 direct PCIe 5.0 lanes for NVMe storage and GPUs, plus 8 DMI 4.0 lanes to the chipset for additional I/O. This is well suited to multi-GPU or high-speed SSD arrays common in workstations.
Overclocking
This SKU does not expose an unlocked multiplier; it runs within specified base and turbo power limits (210 W base, 252 W turbo), which aligns with typical workstation stability requirements.
- Higher base and turbo clocks (3.3/4.8 GHz vs 3.2/4.6 GHz).
- Larger L3 cache (33.75 MB vs 30 MB).
- Refresh positioning in the W-2500 series with incremental frequency and cache uplifts.
- Same 64 PCIe 5.0 lanes and quad-channel DDR5-4800 platform.
Key Highlights
- 14 P-cores and 28 threads for strong multi-threaded throughput.
- 64 PCIe 5.0 lanes for extensive I/O expansion.
- Quad-channel DDR5-4800 with ECC support up to 2 TB.
- AMX and AVX-512 accelerate AI and HPC workloads.
- Intel vPro Enterprise and AMT for remote management.
- Monolithic die simplifies latency-sensitive workloads.
- No integrated graphics; a discrete GPU is required.
- Locked multiplier limits enthusiast overclocking.
- Higher power draw (210 W base/252 W turbo) than mainstream desktop CPUs.
- Platform cost (W790 motherboards and DDR5 RDIMMs) is significant.
- Single-thread performance is competitive but not class-leading for gaming.
History
The Xeon w5-2555X arrived in mid-2024 as part of Intel's refreshed W-2500 family for single-socket workstations, extending the Sapphire Rapids-WS lineup launched earlier with the W-2400 series. It retained the monolithic die and 64 PCIe 5.0 lanes characteristic of the W-2400/W-2500 tier, while boosting clocks and L3 cache to improve throughput in multi-threaded professional applications.
This refresh was aimed at keeping Intel competitive against AMD's Ryzen Threadripper PRO family and addressing demand for PCIe 5.0 and DDR5 in workstation segments without stepping up to the larger, chiplet-based W-3400/W-3500 platforms.
Improvements over Previous Generation
- Higher base and turbo clocks (3.3/4.8 GHz vs 3.2/4.6 GHz).
- Larger L3 cache (33.75 MB vs 30 MB).
- Refresh positioning in the W-2500 series with incremental frequency and cache uplifts.
- Same 64 PCIe 5.0 lanes and quad-channel DDR5-4800 platform.
Alternatives & Competitors
Should You Buy It?
Recommended for the right buyer
Single-socket workstation builds that need 64 PCIe 5.0 lanes, quad-channel DDR5 ECC, and ISV-certified stability for professional apps.
Avoid if…
- You want integrated graphics (this SKU has none).
- You prioritize gaming performance and cost-efficiency.
- You need an unlocked multiplier for overclocking.
Use Cases
Interesting Facts
The W-2500 lineup is a refresh of the W-2400 family, with small frequency and cache improvements while retaining the monolithic die and 64 PCIe 5.0 lanes.
The processor includes one instance of Intel Data Streaming Accelerator (DSA) to offload data movement tasks.
It supports Intel Total Memory Encryption (TME) for protecting data at rest in memory.
AVX-512 is present with two FMA units, which benefits workloads like fluid simulation and financial modeling.
The w5-2555X is aimed squarely at single-socket workstations and is not designed for multi-socket scaling.
It lists a 75 °C Tcase and a 101 °C DTS max, guiding thermal solution design.
CPU-Monkey reports the chip as monolithic, consistent with the W-2400/W-2500 family split from the chiplet-based W-3400/W-3500.
People Also Ask
Is the Intel Xeon w5-2555X good for gaming?
It can handle gaming when paired with a discrete GPU, but it is not optimized for gaming; mainstream desktop CPUs typically offer better price/performance for pure gaming.
Does the Xeon w5-2555X support DDR5?
Yes, it supports quad-channel DDR5-4800 with ECC, up to 2 TB maximum.
How many PCIe lanes does the Intel Xeon w5-2555X have?
It provides 64 PCIe 5.0 lanes directly from the CPU.
What socket does the Xeon w5-2555X use?
It uses the FCLGA4677 socket, compatible with W790-class workstation motherboards.
Does the w5-2555X have integrated graphics?
No, this SKU does not include an iGPU; a discrete graphics card is required.
What is the TDP of the Intel Xeon w5-2555X?
The processor base power is 210 W and the maximum turbo power is 252 W.
Can I overclock the Intel Xeon w5-2555X?
No, this processor has a locked multiplier and operates within specified base and turbo power limits.
Does the Xeon w5-2555X support ECC memory?
Yes, it supports ECC memory, which is important for workstation reliability.
What is the L3 cache size on the w5-2555X?
It has 33.75 MB of Intel Smart Cache.
Is the Intel Xeon w5-2555X monolithic or chiplet-based?
It is monolithic; the W-2400/W-2500 family uses a monolithic design, while the W-3400/W-3500 family uses chiplets.
Frequently Asked Questions
What is the Intel Xeon w5-2555X?
It is a 14-core/28-thread workstation processor in Intel's W-2500 family, based on the Sapphire Rapids-WS architecture.
Does the w5-2555X support PCIe 5.0?
Yes, it provides up to 64 PCIe 5.0 lanes directly from the CPU.
What is the maximum memory speed supported?
Officially, DDR5-4800 MT/s is the maximum supported speed.
How much RAM can the w5-2555X support?
Up to 2 TB of DDR5 across four channels.
Does it support Intel vPro?
Yes, it is eligible for Intel vPro Enterprise, including Intel AMT for remote management.
What are Intel AMX and DL Boost on this CPU?
AMX accelerates matrix operations (useful for AI inference); DL Boost includes VNNI instructions to speed up deep learning primitives.
Can I use non-ECC memory?
ECC is supported, but whether non-ECC UDIMMs are allowed depends on the motherboard; the CPU spec supports ECC.
Is the w5-2555X compatible with W790 motherboards?
Yes, it uses the FCLGA4677 socket and is intended for W790 workstation platforms.
What cooling is recommended?
Given the 210 W base/252 W turbo power envelope, a high-end 360 mm AIO or a robust tower air cooler designed for high TDP is advisable.
Does it support Optane Persistent Memory?
No, Intel ARK lists Optane Persistent Memory support as not available for this SKU.