Intel® Xeon™ E5603

The Intel Xeon E5603 is a server processor with 4 cores and 4 threads, built on the Westmere architecture. It launched in Feb 2011. A 4-MB L3 cache backs the cores (1.0 MB per core). It supports DDR3 memory. It uses the FCLGA1366 socket. Rated TDP is 80 W.

The Intel Xeon E5603 scores 712 in single-core performance and 1,935 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 1,174 for overall performance, 2,255 for productivity performance, 2,346 for creator performance, 1,862 for engineering performance and 2,620 for gaming performance. Its multi-core throughput works out to 484 per core, 484 per thread and 24 per watt. Its computed efficiency index is 131. Its performance index is 15, so its overall performance is 85% 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 E5603.

The Intel Xeon E5603 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 1.60 GHz.

The Intel Xeon E5603 is a server processor, belongs to the Intel Xeon E family and uses the Westmere architecture. It launched in Feb 2011.

The Intel Xeon E5603 has 4 MB of L3 cache. That adds up to about 4.0 MB of cache, or 1.00 MB per core. Feex has no recorded L1 cache size for this processor.

The Intel Xeon E5603 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 E5603 uses the FCLGA1366 socket.

The Intel Xeon E5603 has a rated TDP of 80 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 E5603 is manufactured by Intel. It launched at a price of $188.

Feex has recorded 45% of the specifications it tracks for the Intel Xeon E5603. 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: L1 Cache (Total), L2 Cache (Total), 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 E5603 and have the closest multi-core scores in the Feex database include Intel Xeon E5507, Intel Xeon E5506, Intel Xeon E5504, Intel Xeon L5506 and Intel Xeon L5520.