Intel

Intel SR3LJ W-2123 Quad Core 3.6GHz CPU - Renewed

Intel's Xeon W-2123 delivers LGA 2066 quad-core reliability at 3.6 GHz base — a renewed workstation CPU for single-threaded throughput on the X-series platform.

$20.90*
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*Price sourced from Amazon.com. Last updated:Jul 21, 2026.Price and availability are subject to change.

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Overview

The Intel Xeon W-2123 is a quad-core, eight-thread workstation processor on the LGA 2066 platform with a 3.6 GHz base clock and a 120W TDP. What separates the Xeon W-series from consumer Core i-series on the same socket is ECC memory support and validated compatibility with C422 workstation motherboards — features that fundamentally change the platform's reliability profile for professional use. ECC memory corrects single-bit errors silently during operation, eliminating a category of data corruption risk that is acceptable in consumer computing but not in professional workflows. The 44 PCIe 3.0 lanes from the CPU give the platform the bus bandwidth to sustain multiple high-speed expansion cards simultaneously without performance compromise.

The W-2123 in renewed condition targets buyers who need a certified workstation platform — CAD operators, scientific computing users, financial modeling workstations — at budget pricing. Four cores positions it as a single-threaded and lightly multi-threaded workhorse; it is not the right choice for heavily parallel rendering or simulation workloads where 16+ cores would saturate available threads. Its competitive advantage is platform integrity: ECC, PCIe lane count, and C422 motherboard ecosystem compatibility that consumer platforms fundamentally do not offer. For a renewed deployment in a secondary or entry-level professional workstation, the W-2123 delivers the foundational workstation platform requirements at a fraction of original cost.

Specifications

Processor
Intel Xeon W-2123
Model Number
SR3LJ
Socket
LGA 2066
Core Count
4 (Quad-Core)
Thread Count
8
Base Clock
3.60 GHz
TDP
120W
ECC Memory Support
Yes
PCIe Lanes
44 (PCIe 3.0)
Memory Channels
Quad-Channel DDR4
Condition
Renewed (professionally inspected and tested)

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Frequently Asked Questions

The W-2123 uses the LGA 2066 socket, compatible with Intel C422 chipset workstation motherboards — platforms like the Asus Pro WS X299 SAGE II, Gigabyte X299 DESIGNARE EX, and similar W-series Xeon validated boards. It is not compatible with consumer LGA 2066 X299 boards unless those boards explicitly list Xeon W support in their compatibility documentation.
Yes — the Xeon W-2123 supports ECC (Error-Correcting Code) memory, which is the primary architectural distinction between this workstation CPU and consumer Core i-series on LGA 2066. ECC detects and corrects single-bit memory errors in real time, making it the appropriate platform for financial modeling, scientific computing, CAD, and other applications where data integrity is non-negotiable.
The Xeon W-2123 provides 44 PCIe 3.0 lanes directly from the CPU. This is substantially more than consumer desktop CPUs — 44 lanes supports simultaneous use of multiple PCIe x16 GPUs, high-speed NVMe RAID arrays, and Thunderbolt cards without lane contention, which is why the W-series platform targets professional workstation builders.
The W-2123 has a 120W TDP — meaningfully higher than consumer desktop i5/i7 chips. Standard consumer coolers designed for 65–95W TDP CPUs are insufficient for sustained workloads at this TDP. A workstation-grade tower cooler or a 240mm+ AIO rated for 150W+ TDP is the appropriate thermal solution for this processor.
The SR3LJ W-2123 is listed as professionally inspected and tested to perform like new. For a CPU, renewed typically means the processor has been electrically tested for correct operation across all cores and cache. Before deploying in a production environment, run a stress test suite (Prime95, Cinebench multi-core) to confirm stability under sustained full-load operation, which can surface latent issues not caught in basic functional testing.