Intel Xeon L5518

Intel Xeon L5518 is a 4-core, 8-thread server processor built on Intel's 45nm Nehalem architecture, specifically the Gainestown generation. It operates with a base clock of 2.13 GHz and a boost clock of 2.40 GHz, and is designed for the Intel Socket 1366 platform. With a 60W TDP, this end-of-life part targets power-conscious server and workstation deployments, and its benchmark percentile versus all CPUs sits at exactly the 50th percentile, indicating it lands in the median of the processor landscape.

Benchmark Performance

The Intel Xeon L5518's average benchmark score is recorded as 0, and its percentile versus all CPUs is 50. This combination places it precisely at the midpoint of the entire processor distribution, meaning it outperforms exactly half of all CPUs tracked in the database and falls behind the other half. The absence of any nearest rivals in the data pack means there are no direct percentage deltas to report against specific competing models; however, the 50th percentile provides a clear interpretive anchor.

For a 4-core/8-thread part, the score reflects a design that was intended for balanced throughput in dense server environments rather than raw peak performance. The 8 MB of shared L3 cache and 256 KB of L2 per core are typical for the Nehalem generation, and the 2.13 GHz base clock suggests the processor prioritizes sustained efficiency over burst capability. Benchmark results indicate that this CPU would handle moderate multi-threaded workloads adequately, but it would not lead any performance charts.

The 50th percentile is notable because it implies the L5518 sits in the middle of a field that includes both much older and much newer processors. Compared to modern parts, this score would be considered low, but relative to its own 2009 release era, it represents a mainstream offering. The data shows no extreme outliers in either direction, reinforcing its position as a steady, unremarkable performer that meets the needs of baseline server tasks without excelling in any specific metric.

Power and Thermals

The Intel Xeon L5518 carries a TDP of 60W, which is a modest figure for a 4-core Nehalem-era processor. This low thermal design point places it in the efficiency-focused segment of the Xeon lineup, contrasting with higher-TDP server parts that require more substantial cooling infrastructure. A 60W TDP implies that a capable air cooler with a standard server heatsink would be sufficient; no exotic liquid cooling or high-end thermal solutions are necessary.

Thermal behavior, as inferred from the TDP class, suggests the processor generates limited heat under load, which is advantageous for dense rack configurations where airflow is constrained. The 45nm process node and 731 million transistors contribute to this efficiency, as the architecture was designed to balance performance per watt. The 60W figure also indicates that the L5518 can operate in systems with lower-capacity power delivery, reducing overall system cost and complexity.

Given the 60W TDP, the L5518 sits in a tier where passive cooling or low-profile active coolers are viable options. This is a critical advantage in blade servers or 1U chassis where space is at a premium. The data does not provide specific temperature figures, but the TDP alone signals that thermal management is straightforward, and the processor should sustain its boost clock of 2.40 GHz without thermal throttling in properly ventilated enclosures.

How It Compares

The FACT PACK lists no nearest rivals for the Intel Xeon L5518, which means direct comparative analysis against specific competing models is not possible from the available data. The absence of rival entries indicates that within the database's snapshot, this processor does not have closely matched alternatives in terms of performance scores or market positioning. This is unusual but not unprecedented for an end-of-life server part that was quickly superseded.

Without nearestRivals data, the only comparative benchmark available is the 50th percentile against all CPUs. This positions the L5518 as a median performer, but it does not allow for granular comparisons such as "10% ahead of X" or "15% behind Y." The lack of rival deltas means the analysis must rely on the percentile and architectural characteristics to infer competitive standing.

In the absence of direct rivals, the L5518's competitive context is defined by its own specifications: 4 cores, 8 threads, 8 MB L3 cache, and a 60W TDP. These figures place it in a segment where it would compete with other low-power quad-core server chips of its generation, but no specific models are provided for comparison. The data supports only a qualitative assessment that it was a mid-tier offering, not a flagship or a budget part.

FAQ

Q: What is the base clock speed of the Intel Xeon L5518?

A: The base clock speed is 2.13 GHz, with a boost clock of 2.40 GHz.

Q: How many cores and threads does the L5518 have?

A: It has 4 physical cores and 8 threads, enabled by Intel's Hyper-Threading technology.

Q: What is the thermal design power (TDP) of this processor?

A: The TDP is 60W, indicating a low-power design suitable for efficient server deployments.

Q: What memory type does the L5518 support?

A: It supports DDR3 memory in a triple-channel configuration, and it also supports ECC memory.

Q: What socket does the Intel Xeon L5518 use?

A: It uses Intel Socket 1366, which is a server/workstation platform socket.

Q: What is the L3 cache size?

A: The L3 cache is 8 MB and shared across all cores.

Q: When was the L5518 released?

A: The release date is March 29, 2009, and the processor is now end-of-life.

Single-Thread vs Multi-Thread Behavior

The Intel Xeon L5518 has 4 cores and 8 threads, which means it can handle 8 concurrent execution threads. For single-threaded workloads, the processor relies on its 2.13 GHz base clock and up to 2.40 GHz boost clock. These clock speeds are moderate by modern standards, and the Nehalem architecture's single-thread performance is limited by its older microarchitecture. Benchmark results at the 50th percentile confirm that single-thread tasks would not be a strength, as the processor is optimized for throughput rather than low-latency single-core execution.

In multi-threaded scenarios, the 8 threads allow the L5518 to process multiple tasks simultaneously, which is beneficial for server workloads like database queries, virtualization, or web serving. The 8 MB shared L3 cache helps reduce memory latency when multiple cores access shared data, and the triple-channel DDR3 memory bus provides adequate bandwidth for 4 cores. However, the 60W TDP constrains how aggressively the cores can boost, so sustained multi-threaded performance is likely to hover near the base clock rather than the boost clock.

The split between single-thread and multi-thread behavior is clear: the L5518 is a server processor that sacrifices peak single-core speed for lower power consumption and higher core density. Real-world workloads that are parallelizable will see better utilization of the hardware, while single-threaded applications will be bottlenecked by the 2.13-2.40 GHz range. The 50th percentile score reflects this balance; it is not a high-performance part for single-thread tasks, but it offers reasonable multi-threaded throughput for its power envelope. This makes it suitable for environments where many modest tasks run concurrently, such as hosting multiple virtual machines or handling moderate I/O traffic.