Intel Xeon W-2125 4-Core 4.00GHz Server Processor

With 4 cores (8 threads) at a 4.00GHz base clock, boosting to 4.50GHz, the Intel Xeon W-2125 carries 8.25MB of cache and is rated at 120W. Part of the Intel server line, it uses Socket 2066 and addresses up to 512GB of memory at 2666MHz DDR4.

It suits general-purpose server duty on its platform. Pair it with an identical processor in dual-socket systems, and confirm the heatsink and BIOS support a 120W chip before installing. A second socket populated means a second set of memory channels and expansion lanes becomes usable. Its S-spec, SR3LM, pins down the exact stepping. Clean off old thermal compound and apply fresh paste when fitting it. A 120W processor needs a heatsink rated for its power, and higher-TDP parts may need the server’s high-performance heatsink. With simultaneous multithreading enabled, it presents 8 threads to the operating system. Boost clocks apply when thermal and power headroom allow; the base clock is the sustained figure. Per-core software licensing makes core count a cost decision as well as a performance one.

Sold as certified refurbished, the part passes inspection and a bench test in Johannesburg before release.