Intel® Xeon™ L5609

The Intel Xeon L5609 is a server processor with 4 cores and 4 threads, built on the Westmere architecture. It launched in Mar 2010. Clocks run from 1.87 GHz base to 1.87 GHz boost. A 12-MB L3 cache backs the cores (3.6 MB per core). It supports DDR3 memory. It uses the FCLGA1366 socket. Rated TDP is 40 W.

The Intel Xeon L5609 scores 1,160 in single-core performance and 3,298 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 1,956 for overall performance, 3,768 for productivity performance, 3,902 for creator performance, 3,174 for engineering performance and 4,305 for gaming performance. Its multi-core throughput works out to 825 per core, 825 per thread and 83 per watt. Its computed efficiency index is 309. Its performance index is 24, so its overall performance is 76% below the Intel Core i5-12400 (index 100). Each bar shows the score as a share of a reference ceiling, which is the larger of the 99th-percentile score across the Feex CPU database and a fixed baseline.

Workload sub-scores (integer math, floating point, compression, encryption, physics, SIMD, prime sieve and sorting) are not recorded for the Intel Xeon L5609.

The Intel Xeon L5609 has 4 physical cores and runs 4 logical threads. It does not use a hybrid performance and efficiency core layout. It does not support simultaneous multithreading, so its thread count equals its core count. It runs at a base clock of 1.87 GHz and boosts up to 1.87 GHz.

The Intel Xeon L5609 is a server processor, belongs to the Intel Xeon family and uses the Westmere architecture. It launched in Mar 2010.

The Intel Xeon L5609 has 512 KB of L1 cache, 2 MB of L2 cache and 12 MB of L3 cache. That adds up to about 14.5 MB of cache, or 3.63 MB per core.

The Intel Xeon L5609 has a 3-level cache hierarchy: L1 at 512 KB, L2 at 2 MB and L3 at 12 MB. L3 is the largest level and makes up about 83% of the cache listed here.

The Intel Xeon L5609 supports DDR3 memory and runs memory at up to 1,066 MT/s. It does not support DDR5, DDR4 and LPDDR memory.

The Intel Xeon L5609 uses the FCLGA1366 socket.

The Intel Xeon L5609 has a rated TDP of 40 W.

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

The Intel Xeon L5609 is manufactured by Intel. It launched at a price of $440.

Feex has recorded 49% of the specifications it tracks for the Intel Xeon L5609. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Efficiency Cores, All-Core Boost and Unlocked Multiplier. Architecture & Generation: Codename, ISA Family and Market Status. Cache: L2 Cache (per Core) and L4 Cache. Memory Support: Memory Channels, Memory Bandwidth and ECC Memory. Graphics: Integrated Graphics, Graphics Model, Graphics Base Clock, Graphics Max Clock, Execution Units, Display Outputs and Max Video Memory. Platform & Compatibility: Package, Package Size and PCIe Lanes. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size, Die Count and Foundry. Naming & Aliases: SKU, Model Number, Processor Number and Part Number.

Processors that use the same FCLGA1366 socket as the Intel Xeon L5609 and have the closest multi-core scores in the Feex database include Intel Xeon X5570, Intel Core i7-950, Intel Xeon W3550, Intel Xeon W3570 and Intel Xeon X5560.