Intel SLBFH L5506 2.13GHz Quad-Core LGA1366 CPU

The Intel Xeon L5506 (SLBFH) is a quad-core server processor based on Intel's Nehalem microarchitecture, designed for the LGA1366 socket platform. Running at a base clock of 2.13GHz with 4MB of L3 cache and a QPI link speed of 4.8GT/s, it was positioned as a low-power option within the Xeon 5500 series. The "L" prefix designates its lower 60W thermal design power, which made it attractive for density-optimized or power-conscious server deployments where reducing heat output and electricity costs was a priority.

As a legacy processor, the L5506 is primarily relevant today as a replacement part for servers and workstations still running on LGA1366 motherboards. It lacks features found in later Xeon generations, including hyper-threading and turbo boost, so its effective throughput is limited to four threads at a fixed 2.13GHz. The 4MB cache is also modest compared to later processors that offered 8MB or more. For organizations maintaining older infrastructure that cannot yet be retired, the L5506 provides a cost-effective way to keep LGA1366 systems operational, but it is not a sensible choice for any new build or performance-sensitive application.