Intel Xeon E3-1280 v5

The Intel Xeon E3-1280 v5 is a 4-core, 8-thread Skylake-DT processor aimed at the Server/Workstation segment. It uses Intel Socket 1151, supports DDR4 dual-channel memory with ECC, and has no integrated graphics. Its average benchmark score is 2026, placing it at the 47th percentile of all CPUs in the database, with nearest rivals all within a narrow performance band.

Who Should Consider It

This processor suits workloads that need ECC memory support and a compact 4-core/8-thread design. The market segment is Server/Workstation, and the ECC memory support is listed as true, so it fits small servers and workstation builds where data integrity matters more than raw core count. The 4-core/8-thread layout means it is not a high-core-count part; the multi-core scores of 706 in Cinebench R15, 2942 in R20, and 7006 in R23 define a moderate parallel throughput ceiling.

For office and productivity-style work, single-thread performance is the more relevant metric. The CPU posts 99 in Cinebench R15 single-core, 415 in R20 single-core, and 989 in R23 single-core, which indicate a responsive part for latency-sensitive desktop tasks. The 3.70 GHz base clock and 4.00 GHz boost clock give it solid clock headroom for such workloads.

For gaming, the lack of integrated graphics means a discrete GPU is mandatory. With that requirement met, the single-core scores suggest the CPU can handle less demanding titles, but the 4-core/8-thread structure will limit the most heavily threaded modern game loads. For content creation, the multi-core scores show that the CPU will complete threaded rendering work, but users with continuously heavy render jobs will want more physical cores. In short, this is a CPU for legacy Socket 1151 workstation environments, ECC-aware server builds, and users who need modest multicore throughput with strong single-thread behavior.

Single-Thread vs Multi-Thread Behavior

The split between the single-core and multi-core benchmark results is clear. In Cinebench R15, the single-core score is 99 and the multi-core score is 706. In R20, the single-core result is 415 and the multi-core result is 2942. In R23, the single-core result is 989 and the multi-core result is 7006. In every test, the multi-core score far exceeds the single-core score, consistent with the 4-core/8-thread configuration.

The single-thread performance is anchored by the clock speeds: 3.70 GHz base and 4.00 GHz boost. The 4.00 GHz figure is the highest frequency in the fact pack, which gives the CPU useful headroom for older or lightly threaded code. The cache layout is also relevant: 64 KB L1 per core, 256 KB L2 per core, and 8 MB shared L3. That shared L3 cache helps the four cores exchange data efficiently in threaded workloads.

Multi-thread behavior is bounded by the core and thread count, not by the clock speeds. The CPU can run 8 threads simultaneously, but only 4 are physical cores. As a result, the multi-core scores reflect a processor that benefits from threading but cannot compete with higher-core-count parts. The benchmark data shows a typical 4-core/8-thread Skylake pattern: single-thread results are competitive for the era, while multi-thread results are modest.

Power and Thermals

The thermal design point is 80 W TDP. This is a moderate power class, and the data implies that a capable air cooler is enough to handle the heat output. There is no need for exotic cooling based on the 80 W figure. The physical design context includes a 14 nm process node, 1,750 million transistors, and a 122 mm² die size. These figures describe a dense but relatively small chip, consistent with a mainstream cooling requirement.

The production status is end-of-life, but the power characteristics remain relevant for anyone running this CPU in a workstation or server board. An 80 W TDP means power delivery and cooling do not require oversized hardware. The absence of integrated graphics also means no iGPU power draw is present in the package; all thermal and power behavior is tied to the CPU cores, cache, and memory controller.

FAQ

Q: Does the Intel Xeon E3-1280 v5 support ECC memory?

A: Yes, ECC memory support is listed as true.

Q: What socket does this processor use?

A: It uses Intel Socket 1151.

Q: Does it have integrated graphics?

A: No, the integrated graphics field is null, so a separate GPU is required.

Q: Is the multiplier unlocked?

A: No, the multiplier unlocked field is false.

Q: What memory type does it support?

A: It supports DDR4 memory in a dual-channel configuration.

Q: What is its production status?

A: The production status is end-of-life.

Benchmark Performance

The aggregate benchmark data places this CPU at 2026 average score, with a percentile ranking of 47 among all CPUs. In Cinebench R15, it scores 706 multi-core and 99 single-core. In R20, it scores 2942 multi-core and 415 single-core. In R23, it scores 7006 multi-core and 989 single-core. These results show a processor that is consistently mid-pack in the database, with a single-thread profile that is stronger relative to its own multi-thread ceiling.

The nearest rival data confirms that the E3-1280 v5 sits in a tight cluster. The Xeon E3-1260L v5 has an average score of 2025 and a deltaPct of 0.1. The Xeon E3-1275 v5 has an average score of 2028 and a deltaPct of -0.1. The Xeon E3-1240 v5 has an average score of 2031 and a deltaPct of -0.3. The Core i7-3960X has an average score of 2036 and a deltaPct of -0.5. Looking at these deltaPct values, the E3-1280 v5 is effectively tied with its closest rivals, trailing the three higher-scoring parts by fractions of a percent.

The Cinebench scores do not dramatically separate the E3-1280 v5 from its nearest rivals; instead, they reinforce the same story as the average score. This is a mid-range processor whose benchmark performance lands near the 47th percentile. The 0.1% and 0.3% deltas are small enough that the ranking among these CPUs is not a large performance gulf. The data shows a group of comparable workstation processors, with the E3-1280 v5 somewhere in the middle.

Platform and Compatibility

The platform foundation is Intel Socket 1151. Memory support is DDR4 with a dual-channel memory bus, and ECC memory is supported. The PCIe configuration is Gen 3 with 16 lanes available from the CPU only. There is no integrated graphics, so any display output requires a discrete graphics adapter. The market segment is Server/Workstation, and the production status is end-of-life.

The CPU has a locked multiplier, so overclocking is not an option according to the fact pack. The part number is SR2LC. The launch MSRP was $612. The end-of-life status means any upgrade path is constrained to the Intel Socket 1151 platform and its DDR4 infrastructure. The 16 CPU-attached PCIe Gen 3 lanes define the expansion bandwidth available directly from the processor. This is a platform built around a workstation or server workload, not a general-purpose unlocked desktop part.

How It Compares

Against the Xeon E3-1260L v5, the E3-1280 v5 holds a nominal lead. The average scores are 2026 versus 2025, and the deltaPct is 0.1. This is effectively a tie, with the E3-1280 v5 ahead by only a tiny margin in the database.

Against the Xeon E3-1275 v5, the E3-1280 v5 trails slightly. The E3-1275 v5 averages 2028, and the deltaPct is -0.1. That is a negligible gap, but the direction favors the E3-1275 v5.

Against the Xeon E3-1240 v5, the E3-1280 v5 is again behind. The E3-1240 v5 averages 2031, and the deltaPct is -0.3. This is still a very small difference, but it is larger than the gap to the E3-1275 v5.

Against the Core i7-3960X, the E3-1280 v5 faces the largest listed gap. The Core i7-3960X averages 2036, and the deltaPct is -0.5. The E3-1280 v5 is behind by half a percentage point, which is the biggest deficit among the nearest rivals. Overall, the data places the E3-1280 v5 in a closely fought group, with no rival more than 0.5% away.