Intel Core i5-2400 vs Intel Xeon D-1527 Comparison

Head-to-Head Benchmarks

The benchmark data for these two Intel processors shows a consistent and decisive advantage for the Intel Xeon D-1527. Across all five comparable Cinebench tests, the Xeon D-1527 wins by a margin between 27.3% and 27.7%. This is not a narrow victory in a single workload; it is a uniform performance gap that persists in both multi-core and single-core scenarios.

Starting with the multi-core results, the Cinebench R15 multicore test shows the Xeon D-1527 scoring 420 against the Core i5-2400's 329. That is a 27.7% advantage. The Cinebench R20 multicore test tells a similar story, with the Xeon D-1527 at 1753 and the Core i5-2400 at 1374, a delta of 27.6%. Moving to Cinebench R23 multicore, the Xeon D-1527 records 4176 while the Core i5-2400 posts 3272, again a 27.6% gap. The pattern is clear: when all cores are engaged, the Xeon D-1527 delivers roughly a quarter more performance than the older desktop part.

Single-core performance follows the same trajectory, which is notable because the Core i5-2400 has a higher base clock and boost clock. In Cinebench R20 single-core, the Xeon D-1527 scores 247 versus 194 for the Core i5-2400, a 27.3% lead. In Cinebench R23 single-core, the Xeon D-1527 scores 589 against 462, a 27.5% gap. The Xeon D-1527 also wins the Cinebench R15 single-core test with 59 points, though the Core i5-2400 has no recorded score for that specific test in the database.

The aggregate picture is reinforced by the average benchmark scores. The Xeon D-1527 has an average score of 1207, while the Core i5-2400 averages 1187. The Xeon D-1527 sits at the 34th percentile among all CPUs, and the Core i5-2400 sits at the 33rd percentile. These percentiles are nearly identical, indicating that both parts are in the same general performance tier relative to the broader CPU landscape, but the head-to-head deltas show the Xeon D-1527 is consistently ahead when directly compared.

The Core i5-2400 does have one additional benchmark recorded in the database, a Geekbench multicore score of 2011 and a single-core score of 666. The Xeon D-1527 has no Geekbench scores recorded, so a direct comparison on that workload is not possible from the available data. However, the Cinebench suite, which covers both single and multi-threaded rendering, shows no scenario where the Core i5-2400 closes the gap.

Architecture Differences

The two processors come from different architectural eras and target different market segments. The Intel Xeon D-1527 is built on the Broadwell architecture, specifically the Broadwell-DE variant for the Xeon D line, using a 14 nm process node. The Intel Core i5-2400 uses the Sandy Bridge architecture on a 32 nm process node. This process difference is significant: the Xeon D-1527 packs 3,200 million transistors into a 246 mm² die, while the Core i5-2400 has 1,160 million transistors on a 216 mm² die. The Xeon D-1527 is a server and workstation part, while the Core i5-2400 is a desktop processor.

Both CPUs have four physical cores, but the threading configurations differ. The Xeon D-1527 supports 8 threads, meaning each core can handle two threads simultaneously. The Core i5-2400 supports only 4 threads, one per core, with no hyper-threading. This explains part of the multi-core performance gap, though it does not account for the single-core gap, where the Xeon D-1527 also leads despite lower clock speeds.

Clock speeds favor the Core i5-2400 on paper. The Core i5-2400 has a base clock of 3.10 GHz and a boost clock of 3.40 GHz. The Xeon D-1527 has a base clock of 2.20 GHz and a boost clock of 2.70 GHz. Despite the lower clocks, the Xeon D-1527 wins every single-core test in the database. This suggests the newer architecture and possibly other factors, such as memory support, offset the clock disadvantage.

Cache layouts are also different. The Xeon D-1527 has 64 KB of L1 cache per core and 256 KB of L2 cache per core, with 1.5 MB of L3 cache per core. The Core i5-2400 also has 64 KB of L1 per core and 256 KB of L2 per core, but its L3 cache is 6 MB shared across all four cores. The Xeon D-1527's per-core L3 arrangement means each core has dedicated access to its own 1.5 MB slice, which can reduce contention in multi-threaded workloads.

Memory support differs notably. The Xeon D-1527 supports both DDR3 and DDR4 memory on a dual-channel bus, and it supports ECC memory. The Core i5-2400 supports only DDR3 on a dual-channel bus, with no ECC support. The Xeon D-1527 also offers more PCIe lanes: 24 lanes of Gen 3 versus 16 lanes of Gen 3 for the Core i5-2400. The Core i5-2400 includes integrated graphics (Intel HD 2000), while the Xeon D-1527 has no integrated graphics.

Thermal design power is a major differentiator. The Xeon D-1527 has a TDP of 35 watts, while the Core i5-2400 has a TDP of 95 watts. This is a substantial efficiency advantage for the Xeon D-1527, which delivers higher performance while using less than half the thermal budget of the Core i5-2400.

Production status and release timing also differ. The Xeon D-1527 is listed as Active, with a release date of October 31, 2015. The Core i5-2400 is End-of-life, released on January 8, 2011. The Xeon D-1527 is the newer part by roughly four and a half years.

The Verdict

The recorded data points to a clear winner in the Xeon D-1527. It outperforms the Core i5-2400 in every Cinebench test where both have scores, with margins ranging from 27.3% to 27.7%. It also does so while consuming 35 watts of TDP versus 95 watts for the Core i5-2400, making it substantially more power-efficient. The Xeon D-1527 supports ECC memory, a wider PCIe configuration, and both DDR3 and DDR4, while the Core i5-2400 is limited to DDR3 and lacks ECC.

The Core i5-2400 has one advantage in the form of integrated graphics, which the Xeon D-1527 lacks. For a system that requires a display output without a discrete GPU, the Core i5-2400 is the only option between the two. However, for any workload that relies on CPU compute, the Xeon D-1527 is the superior choice based on the benchmark results.

The average benchmark scores are close, 1207 for the Xeon D-1527 and 1187 for the Core i5-2400, and their percentiles are nearly identical. This indicates that in the broader CPU market, these are comparable parts. But in a direct head-to-head, the Xeon D-1527 wins five out of five recorded comparisons. The Core i5-2400 has no wins in the database.

FAQ

Q: Which processor has more threads?

A: The Intel Xeon D-1527 has 8 threads, while the Intel Core i5-2400 has 4 threads. Both have 4 physical cores.

Q: Does the Intel Core i5-2400 support ECC memory?

A: No. The Core i5-2400 does not support ECC memory. The Xeon D-1527 does support ECC memory.

Q: What is the largest performance difference between the two?

A: The largest delta is 27.7% in the Cinebench R15 multicore test, where the Xeon D-1527 scores 420 and the Core i5-2400 scores 329.

Q: Which processor has a lower TDP?

A: The Xeon D-1527 has a TDP of 35 watts, compared to 95 watts for the Core i5-2400.

Q: Does the Xeon D-1527 have integrated graphics?

A: No. The Xeon D-1527 has no integrated graphics. The Core i5-2400 includes Intel HD 2000.

Q: Which processor supports DDR4 memory?

A: The Xeon D-1527 supports both DDR3 and DDR4. The Core i5-2400 supports only DDR3.

Where Each One Wins

The data shows the Xeon D-1527 winning in all five head-to-head benchmark comparisons. Its wins are distributed across both multi-core and single-core Cinebench tests, with deltas of 27.3% to 27.7%. This makes it the pick for any workload that benefits from higher CPU throughput, whether that workload is single-threaded or fully parallel. The Xeon D-1527 also wins on efficiency, with a 35 watt TDP versus 95 watts, and on platform features, including ECC memory support, DDR4 compatibility, and 24 PCIe Gen 3 lanes.

The Core i5-2400 has no benchmark wins in the database. Its only edge is the integrated graphics, which the Xeon D-1527 lacks entirely. For a system that must output video without a separate graphics card, the Core i5-2400 is the only viable option. It also has a higher base clock of 3.10 GHz and a higher boost clock of 3.40 GHz, though those clocks do not translate into benchmark wins in the recorded tests. The Core i5-2400 is an end-of-life desktop part, while the Xeon D-1527 is an active server and workstation part.

Use-case analysis from the data: choose the Xeon D-1527 for server, workstation, or any compute-focused build where the lack of integrated graphics is acceptable. Choose the Core i5-2400 only for a legacy desktop build that needs integrated graphics and can tolerate lower performance and higher power draw.

Specification Differences

| Specification | Intel Xeon D-1527 | Intel Core i5-2400 |

| --- | --- | --- |

| Threads | 8 | 4 |

| Base Clock | 2.20 GHz | 3.10 GHz |

| Boost Clock | 2.70 GHz | 3.40 GHz |

| TDP | 35 W | 95 W |

| Socket | Intel BGA 1667 | Intel Socket 1155 |

| Architecture | Broadwell | Sandy Bridge |

| Process Node | 14 nm | 32 nm |

| Transistors | 3,200 million | 1,160 million |

| Die Size | 246 mm² | 216 mm² |

| L3 Cache | 1.5 MB (per core) | 6 MB (shared) |

| Memory Support | DDR3, DDR4 | DDR3 |

| ECC Memory | Yes | No |

| PCIe | Gen 3, 24 Lanes | Gen 3, 16 Lanes |

| Integrated Graphics | None | Intel HD 2000 |

| Market Segment | Server/Workstation | Desktop |

| Production Status | Active | End-of-life |

| Release Date | 2015-10-31 | 2011-01-08 |

| Launch MSRP | $213 | None recorded |

The specification table highlights the generational and segment differences. The Xeon D-1527 is a newer, more power-efficient, and more feature-rich processor, while the Core i5-2400 is an older desktop part with higher clocks and integrated graphics. The Xeon D-1527 also has a recorded launch MSRP of $213.