Intel Xeon E3-1285 v6

The Intel Xeon E3-1285 v6 is a 4-core, 8-thread processor built on the 14nm Kaby Lake architecture, designed for the server and workstation segment. It sits in the 50th percentile of all CPUs in the database, indicating a squarely mid-pack performer that trades blows with contemporary desktop and entry-level Xeon parts. Its benchmark results reveal a chip that is highly capable for its era but faces stiff competition from newer generations.

Benchmark Performance

The E3-1285 v6 delivers a consistent performance profile across Cinebench versions, with scores that scale predictably from R15 through R23. In Cinebench R15, it achieves a multi-core score of 811 and a single-core score of 114. Moving to R20, the multi-core score rises to 3383, while single-core reaches 477. In the most demanding test, Cinebench R23, the chip posts 8056 multi-core and 1137 single-core points.

The average benchmark score of 2330 places it within a hair's breadth of its nearest rival, the Intel Xeon E-2234, which scores 2329. The delta here is a negligible 0.1%, meaning the two chips are effectively tied in overall performance. Against the other competitors in its immediate class, the E3-1285 v6 holds a slim but real edge. It leads the Intel Core i7-8809G by 0.5%, the Core i5-9400 by 1.1%, and the Core i3-10305 by 1.3%. These margins are small in raw terms, but they show the Xeon does not lose ground to any of these alternatives in aggregate compute throughput.

Notably, the multi-core R23 result of 8056 is the strongest data point for this chip. It indicates that under sustained all-core loads, the processor scales well beyond what its modest 4-core count might suggest, thanks to the 8 threads. The single-core R23 score of 1137 is similarly competitive, placing it in a position where it can handle lightly-threaded tasks without falling behind. In absolute terms, the benchmark data shows a processor that is neither a standout nor a laggard; it is a solid, dependable performer that matches the mid-range of the database.

How It Compares

Intel Xeon E-2234: The closest comparison is a near-perfect tie. The E3-1285 v6 edges out the E-2234 by a mere 0.1% in average score, which is effectively a statistical dead heat. In practical terms, the two Xeons are interchangeable in workload performance, and the choice between them would come down to platform features or availability rather than compute capability.

Intel Core i7-8809G: The 0.5% lead over this hybrid processor is slight but consistent. The i7-8809G is a mobile-derived part with integrated graphics, and the data shows the Xeon holds a small but measurable advantage in raw CPU throughput. For a workstation buyer, this edge is minor, but it does mean the Xeon is not conceding anything to a part with a more modern design.

Intel Core i5-9400: The 1.1% advantage over this mainstream desktop chip is more meaningful. The i5-9400 is a 6-core part without hyper-threading, yet its newer architecture brings it close to the older Xeon. This comparison highlights that the E3-1285 v6's extra threads help it stay ahead, but the margin is thin enough that the i5-9400 could outperform it in specific multi-threaded scenarios where core count matters more than thread count.

Intel Core i3-10305: The largest gap is against this part, at 1.3%. The i3-10305 is a newer budget-oriented chip, and the data shows the Xeon still manages to beat it. This is the clearest win for the E3-1285 v6, demonstrating that its high clock speeds and ECC support add value beyond what a similarly priced consumer chip offers.

Power and Thermals

The E3-1285 v6 carries a TDP of 79 watts, placing it in a middle tier for a workstation processor. This is not a low-power part, but it is far from a high-heat flagship. The 79W figure implies that a capable air cooler is sufficient for normal operation, and even a compact tower cooler should handle it without thermal throttling under sustained all-core loads. The base clock of 4.10 GHz and boost clock of 4.50 GHz are high for a 4-core chip, which means heat density is concentrated in a small die area. However, the 14nm process node helps keep that heat manageable. In a workstation chassis with decent airflow, this processor should run within comfortable limits without requiring exotic cooling solutions. The absence of an unlocked multiplier means no overclocking headroom, so the stock cooling solution—or a modest aftermarket cooler—is all that is necessary to maintain rated performance.

Who Should Consider It

The benchmark results point to specific use cases where this Xeon makes sense. For professional workloads that rely on multi-threaded rendering, the Cinebench R23 multi-core score of 8056 indicates solid performance in 3D modeling, video encoding, and batch image processing. The 8 threads allow it to handle these tasks with reasonable speed, though it will not compete with higher-core-count parts in heavily parallel workloads. For single-threaded applications, the R23 single-core score of 1137 shows it is more than capable for everyday office productivity, spreadsheet calculations, and legacy software that runs on one core. The 50th percentile ranking means that for mixed-use environments—where a user might run a compilation, then an office suite, then a quick render—this chip provides a balanced experience without bottlenecks.

The ECC memory support is a decisive factor for anyone building a small server or a workstation where data integrity is paramount. If the workload involves financial modeling, scientific computing, or long-running simulations where a memory error could corrupt results, this Xeon is the right choice over consumer parts. Gamers, however, would find this chip less compelling. While the single-core performance is adequate, the 4-core limit means modern games that leverage more cores will see the processor as a constraint. It is a workstation part first, and the data reflects that.

Single-Thread vs Multi-Thread Behavior

The split between single-thread and multi-thread scores reveals a processor that is well-rounded but leans slightly toward multi-threaded efficiency. In Cinebench R23, the single-core score of 1137 is respectable, but the multi-core score of 8056 shows that scaling from 1 to 8 threads is nearly linear. Dividing the multi-core score by the single-core score gives an approximate scaling factor of 7.1, indicating that the hyper-threading implementation is effective and that the chip loses very little performance when all cores are active. This is a strong result for a 4-core part.

In R15, the single-core score of 114 and multi-core score of 811 yield a similar scaling pattern, confirming that the behavior is consistent across test versions. The practical implication is that this processor will not feel sluggish in everyday tasks that rely on a single fast core, but it truly shines when software can utilize all threads. For workloads like compiling code, applying filters in photo editors, or transcoding video, the multi-threaded performance will significantly outpace what a similarly clocked dual-core part could manage. The 4.50 GHz boost clock ensures that single-threaded tasks still get a high-frequency response, avoiding the lag that some older Xeons exhibit when they drop to low clocks under light load.

Platform and Compatibility

The E3-1285 v6 uses the Intel Socket 1151 interface, tying it to a mature platform with broad motherboard availability. It supports DDR4 memory in a dual-channel configuration, and crucially, it supports ECC memory, which is a key differentiator from consumer desktop chips. The memory controller is integrated, and the dual-channel bus is standard for this class. PCIe connectivity is Gen 3 with 16 lanes available from the CPU, which is sufficient for a single high-end graphics card or a couple of NVMe drives, though it limits expansion for multi-GPU setups.

The integrated HD Graphics P630 provides a basic display output, which is useful for troubleshooting or headless server configurations where a discrete GPU is not needed. The platform's upgrade path is limited, as this is a 2017 part on a socket that has since been superseded. However, the 14nm Kaby Lake architecture is mature and well-supported by operating systems and software. For a buyer building a new system today, the socket compatibility means finding a motherboard may require scouting for older stock or used boards, but the benefit is a stable, proven platform. The ECC support solidifies its position for workstation duty, and the 16 PCIe lanes are adequate for most single-GPU and storage configurations, but not for heavy expansion. The processor is a locked part, so no overclocking is possible, which simplifies cooling and power delivery requirements. Overall, the platform is a pragmatic choice for a dedicated workstation or server build where reliability and ECC are priorities over raw expansion capability.