Intel Xeon E3-1545M v5

The Intel Xeon E3-1545M v5 is a 14nm Skylake-H processor designed for the server and workstation segment, featuring 4 cores and 8 threads with a base clock of 2.90 GHz and a boost clock of 3.80 GHz. It carries a 45W TDP, integrates Iris Pro Graphics P580, and supports both DDR3 and DDR4 memory in a dual-channel configuration. Launched in January 2016 with a launch MSRP of $679, this part is now end-of-life, but its benchmark data reveals a processor whose performance profile is tightly clustered with several desktop and mobile rivals from its era.

Benchmark Performance

The benchmark results for the Xeon E3-1545M v5 paint a picture of consistent, mid-pack performance. Its average benchmark score of 1889 places it at the 44th percentile among all CPUs, indicating that while it is not a top-tier performer by modern standards, it holds its own against a specific set of contemporaries. In Cinebench R23, the processor scores 6533 points in multi-core and 922 points in single-core tests. These figures are instructive; the multi-core score suggests a capable throughput for its class, while the single-core score of 922 reflects the architectural efficiency of Skylake at the time.

Looking at the Cinebench R20 results, the multi-core score of 2743 and single-core score of 387 further corroborate this balanced profile. The ratio between multi-core and single-core performance here is roughly 7:1, which is typical for a 4-core/8-thread part without extreme turbo headroom. The Cinebench R15 scores of 658 (multi-core) and 92 (single-core) continue this trend, showing that the processor scales predictably across different benchmark generations. The data indicates that the E3-1545M v5 is not a specialist in raw throughput but rather a steady performer, with its average score of 1889 sitting almost exactly between its nearest rivals.

The deltaPct values against its nearest rivals are remarkably tight. Against the Intel Core i7-6700T, the Xeon E3-1545M v5 is just 0.1% slower, a negligible margin that places both processors on equal footing in aggregate benchmarks. Against the Intel Core i7-4940MX, the Xeon is 0.3% faster, and it matches that exact 0.3% advantage over both the Intel Core i3-9350K and the Intel Xeon E3-1270L v4. These sub-1% differences suggest that in synthetic workloads, the choice between these CPUs would come down to platform features rather than raw compute power. The data shows that the E3-1545M v5 is effectively a statistical tie with all four of its listed rivals, making its 44th percentile ranking a function of being surrounded by very similar silicon.

Power and Thermals

The Xeon E3-1545M v5 carries a thermal design power (TDP) of 45 watts, which is a defining characteristic for this processor. This TDP class places it firmly in the realm of mobile and compact workstation parts, where thermal dissipation is a primary constraint. A 45W TDP suggests that the processor can be adequately cooled by a capable air cooler designed for small form factor systems or laptop chassis, without requiring exotic liquid cooling solutions. The data implies that sustained multi-core loads, such as those seen in Cinebench R23 multi-core testing, will generate moderate heat that a standard notebook or mini-PC cooling solution can manage, though it may throttle under prolonged extreme stress if the cooling solution is inadequate.

The 14nm process node from Intel, with a die size of 171 mm² and 2,300 million transistors, contributes to this thermal efficiency. The architecture is designed to balance performance and power, and the 45W TDP reflects that engineering goal. For system integrators, this TDP means that power delivery and cooling do not need to be over-engineered, which simplifies motherboard design in the BGA 1440 form factor. The integrated Iris Pro Graphics P580 also shares this thermal budget, meaning that under combined CPU and GPU load, the total heat output could approach the limit, but the benchmark scores indicate that CPU-only workloads remain within expected thermal parameters. In essence, the 45W TDP class positions this Xeon as a low-power server option, suitable for dense deployments where energy efficiency is prioritized over raw performance.

How It Compares

Against the Intel Core i7-6700T, the Xeon E3-1545M v5 is virtually identical in aggregate performance, with a deltaPct of -0.1%. The i7-6700T is a low-power desktop part, and the data shows that the Xeon matches its average score of 1892 almost exactly. The key differentiator is not compute performance but platform support; the Xeon offers ECC memory support, which the i7 does not, making it the more reliable choice for workstation error correction.

The Intel Core i7-4940MX, a mobile enthusiast chip from an older generation, is edged out by 0.3% by the Xeon E3-1545M v5. This is a notable result, as the i7-4940MX was a high-end part in its day, yet the Skylake-based Xeon manages to surpass it in average score (1884 vs. 1889). The Xeon’s newer architecture and higher boost clock of 3.80 GHz likely compensate for any core-count or cache advantages the i7-4940MX might have had.

Comparing to the Intel Core i3-9350K, which is a desktop part with a higher clock speed potential, the Xeon again leads by 0.3%. The i3-9350K has an average score of 1883, and the Xeon’s 1889 average shows that despite having fewer threads (4 vs. 8 in the i3’s case, though the i3 has 4 cores without hyper-threading), the Xeon’s hyper-threading and server-oriented design provide a slight edge in the aggregate benchmark suite.

Finally, the Intel Xeon E3-1270L v4 is another server part, and the E3-1545M v5 matches its average score of 1883 with a 0.3% advantage. This is a direct competitor comparison, and the data shows that the newer 14nm architecture of the E3-1545M v5 offers a measurable, if small, performance uplift over the older Broadwell-based E3-1270L v4. All four comparisons highlight that the E3-1545M v5 sits in a performance plateau where architectural improvements are incremental rather than transformative.

Platform and Compatibility

The Xeon E3-1545M v5 is built for the Intel BGA 1440 socket, which is a soldered, non-upgradeable platform. This means the processor is permanently attached to the motherboard, eliminating any possibility of CPU upgrades without replacing the entire board. The platform supports dual-channel memory with a bandwidth of 34.1 GB/s, and it accepts both DDR3 and DDR4 memory types, offering flexibility for system builders to use either memory generation depending on availability and cost. Notably, ECC memory is supported, which is a critical feature for server and workstation workloads where data integrity is paramount.

For expansion, the processor provides PCIe Gen 3 with 16 lanes available from the CPU only. This is a standard allocation for a single-GPU or single-high-speed-device configuration, though it limits multi-GPU setups without a PLX switch. The integrated Iris Pro Graphics P580 provides display output and compute capabilities, which is unusual for a Xeon part, making it suitable for compact workstations that do not require a discrete GPU. The architecture is Skylake-H, and the production status is end-of-life, meaning that while the platform is mature and stable, new designs should consider more recent alternatives. The upgrade path is effectively nonexistent due to the BGA socket, so buyers must commit to the entire platform at purchase time. The memory support for both DDR3 and DDR4 is a rare feature that extends the usability of existing memory inventories, but the dual-channel configuration caps peak bandwidth at 34.1 GB/s, which is adequate for the CPU’s core count but not exceptional.

FAQ

Q: Does this processor support ECC memory?

A: Yes, the Intel Xeon E3-1545M v5 supports ECC memory, which is a key feature for server and workstation reliability.

Q: What is the boost clock speed of the Intel Xeon E3-1545M v5?

A: The boost clock speed is 3.80 GHz, while the base clock is 2.90 GHz.

Q: How many PCIe lanes does the CPU provide?

A: The CPU provides 16 PCIe Gen 3 lanes, which are available directly from the processor.

Q: Is the processor upgradeable?

A: No, the processor uses the Intel BGA 1440 socket, which is soldered to the motherboard, so it cannot be upgraded without replacing the entire board.

Q: What types of memory does the Xeon E3-1545M v5 support?

A: It supports both DDR3 and DDR4 memory in a dual-channel configuration, with a maximum memory bandwidth of 34.1 GB/s.

Q: What is the average benchmark score compared to the Intel Core i7-6700T?

A: The Xeon E3-1545M v5 has an average score of 1889, which is 0.1% lower than the Core i7-6700T’s average score of 1892.

Who Should Consider It

The benchmark data indicates that the Xeon E3-1545M v5 is best suited for workloads that require a balance of single-threaded responsiveness and multi-threaded throughput, without the need for extreme parallel processing. For gaming, the single-core score of 922 in Cinebench R23 is adequate for titles from its era, but the 44th percentile ranking suggests that modern games demanding higher IPC would not benefit significantly from this part. The integrated Iris Pro Graphics P580 provides a baseline for light gaming, but the processor is not optimized for high-end gaming scenarios.

For content creation, the multi-core score of 6533 in Cinebench R23 indicates that tasks like photo editing and 1080p video rendering are feasible, but the 4-core/8-thread configuration will be a bottleneck for complex 3D rendering or 4K video work. The ECC memory support is a strong draw for professionals who require data accuracy in scientific computing or financial modeling. Office workloads, which are typically single-threaded and light on compute, are well within the capabilities of this processor, as the single-core score of 922 ensures snappy application responsiveness. The low 45W TDP also makes it an excellent candidate for compact, always-on workstations where power efficiency is a priority. Ultimately, this Xeon is for users who need a reliable, ECC-capable processor for moderate workloads in a space-constrained environment, not for those chasing top-tier performance.

Single-Thread vs Multi-Thread Behavior

The split between single-thread and multi-thread performance in the Xeon E3-1545M v5 reveals a processor that is evenly balanced, but not exceptional in either dimension. In Cinebench R23, the multi-core score of 6533 is roughly 7.1 times the single-core score of 922, which is a typical ratio for a 4-core/8-thread Skylake part. This scaling is efficient, indicating that the hyper-threading implementation is effective at extracting additional throughput from the physical cores. However, the absolute single-core score of 922 places it below many modern desktop parts, meaning that applications heavily dependent on single-thread performance, such as legacy software or certain database queries, will not see a significant boost.

The multi-threaded behavior shows that the processor can handle parallel workloads competently, but the 4-core limit caps its ceiling. In Cinebench R20, the multi-core score of 2743 is 7.1 times the single-core score of 387, confirming a consistent scaling factor across benchmark generations. This suggests that the processor’s thermal and power management does not degrade under multi-core load, a testament to the 45W TDP design. For real-world workloads, this means that a user compiling code or rendering a short animation will see solid performance, but long-running, highly parallel tasks will take noticeably longer than on higher-core-count parts. The data implies that the Xeon E3-1545M v5 is a jack-of-all-trades, master of none, where the single-thread performance is sufficient for daily tasks, and the multi-thread performance is adequate for occasional bursts of parallel work, but neither excels to the point of being a specialist.