Intel Core i5-5200U vs Intel Xeon X3450 Comparison

The Intel Core i5-5200U and Intel Xeon X3450 occupy nearly identical positions in the aggregate performance hierarchy, with average benchmark scores of 838 and 837 respectively. This places both processors at the 22nd percentile of all CPUs, a statistical tie that suggests near-equivalence in overall capability. However, that aggregate parity masks a decisive and consistent performance gap in the head-to-head benchmark data, where the Xeon X3450 wins every single test by a margin of approximately 12.5% to 12.7%. The i5-5200U, a mobile Broadwell part, and the Xeon X3450, a server Lynnfield part, represent fundamentally different design philosophies, yet the data indicates that raw compute throughput favors the older, power-hungry Xeon across all measured workloads.

Head-to-Head Benchmarks

The Xeon X3450 establishes its dominance early in the Cinebench R15 multi-core test, scoring 245 against the i5-5200U’s 214. This translates to a 12.7% advantage, the largest delta recorded in the benchmark suite. The pattern holds across newer Cinebench versions: in R20 multi-core, the Xeon posts 1021 versus 892, a 12.6% lead; in R23 multi-core, it scores 2431 against 2125, again a 12.6% gap. These results are not marginal wins but a consistent, structural performance advantage that persists across software generations.

Single-threaded performance tells a similar story, though with slightly smaller margins. The Xeon X3450 leads the i5-5200U by 12.5% in Cinebench R20 single-core, scoring 144 against 126. In R23 single-core, the margin holds at 12.5%, with scores of 343 and 300 respectively. This is notable because the i5-5200U is built on a newer 14 nm process with a higher boost clock relative to its base frequency, yet the Xeon’s higher absolute clock speeds—2.67 GHz base and 3.20 GHz boost—prove decisive. The i5-5200U’s boost clock of 2.70 GHz is 500 MHz lower than the Xeon’s turbo frequency, and that clock deficit appears to outweigh any architectural efficiency gains from Broadwell.

The aggregate benchmark average scores, 838 for the i5-5200U and 837 for the Xeon X3450, are within 0.1% of each other, which would suggest parity. Yet the head-to-head table shows zero wins for the i5-5200U and five wins for the Xeon X3450. This discrepancy arises because the aggregate score includes Geekbench results for the i5-5200U (1464 multi-core, 742 single-core) that have no corresponding Xeon X3450 entry in the data. The Geekbench numbers bolster the i5-5200U’s average, but in the direct comparisons available, the Xeon is uniformly faster. The i5-3380M, with an identical average score of 838, and the Xeon X3450, at 837, bracket the i5-5200U, while the Xeon X5470 (839) and Core i7-920 (840) sit slightly above. None of these deltas exceed 0.3%, reinforcing that these processors are peers in aggregate terms but not in per-workload behavior.

Architecture Differences

The most fundamental distinction lies in the core counts and process technology. The i5-5200U is a dual-core processor with four threads, fabricated on Intel’s 14 nm process with 1,300 million transistors on an 82 mm² die. The Xeon X3450 is a quad-core processor with eight threads, built on the older 45 nm process with 774 million transistors spread across a much larger 296 mm² die. This is a generational chasm: Broadwell-U shrinks the package dramatically while integrating more transistors per square millimeter, whereas Lynnfield uses a comparatively coarse lithography.

Cache hierarchies differ substantially beyond the core counts. Both processors share 64 KB of L1 cache per core and 256 KB of L2 per core, but the L3 cache diverges sharply. The i5-5200U has 3 MB of shared L3, while the Xeon X3450 has 8 MB of shared L3. This 5 MB difference in last-level cache likely contributes to the Xeon’s sustained multi-core performance, as it can hold larger working sets closer to the execution cores.

Memory subsystems also diverge in bandwidth and capability. The i5-5200U supports DDR3 with dual-channel memory and a theoretical bandwidth of 25.6 GB/s, while the Xeon X3450 also supports dual-channel DDR3 but with a lower 21.3 GB/s bandwidth. Despite the Xeon’s lower memory bandwidth, it compensates with support for ECC memory, which the i5-5200U lacks. This makes the Xeon suitable for error-correcting workloads in server environments, while the i5-5200U is limited to consumer mobile platforms.

The i5-5200U integrates Intel HD 5500 graphics, whereas the Xeon X3450 has no integrated graphics at all. This is a critical functional difference: the mobile part can drive a display without a discrete GPU, while the server part requires an external graphics solution. PCIe connectivity also differs, with the i5-5200U providing 12 Gen 2 lanes and the Xeon X3450 offering 16 Gen 2 lanes, giving the server processor more expansion headroom for peripherals.

Power and packaging reflect their market segments. The i5-5200U has a TDP of 15 watts and uses the Intel BGA 1168 socket, which is soldered onto motherboards and designed for thin, power-constrained laptops. The Xeon X3450 has a 95-watt TDP and uses the Intel Socket 1156, a socketed design intended for server and workstation motherboards with adequate cooling. The release dates also span generations: the i5-5200U launched on 2015-02-28, while the Xeon X3450 arrived earlier on 2009-09-07.

Where Each One Wins

The Xeon X3450 wins every benchmark category where direct comparisons exist, making it the clear choice for compute-intensive, multi-threaded workloads. Its quad-core, eight-thread configuration delivers a 12.6% advantage in Cinebench R20 and R23 multi-core tests, and a 12.7% lead in R15 multi-core. For applications that scale with core count—video rendering, scientific simulations, batch compilation—the Xeon’s additional two physical cores and four threads provide a tangible throughput benefit. The larger 8 MB L3 cache also favors workloads with repetitive data access patterns, such as database queries or virtualized server instances. ECC memory support further positions the Xeon for reliability-sensitive tasks where a single bit flip could corrupt results.

The i5-5200U’s wins are not in raw performance but in platform integration and efficiency. Its 15-watt TDP is a fraction of the Xeon’s 95-watt envelope, making it suitable for passively cooled ultrabooks or fanless designs. The integrated Intel HD 5500 graphics eliminate the need for a discrete GPU, reducing system cost and power draw for basic display output. The newer 14 nm process and 25.6 GB/s memory bandwidth suggest better per-watt efficiency, even if the aggregate benchmarks do not capture battery life or thermals. For light productivity tasks—web browsing, office documents, media playback—the i5-5200U provides adequate performance with far less thermal burden.

The single-core results are closer, with the Xeon leading by 12.5% in both R20 and R23 single-thread tests. This is surprising given the i5-5200U’s architectural recency, but it underscores the importance of raw clock speed; the Xeon’s 3.20 GHz boost clock outpaces the i5-5200U’s 2.70 GHz boost by 500 MHz. Workloads that are latency-bound and single-threaded, such as legacy application code or certain scripting engines, will still favor the Xeon, though the margin is narrower than in multi-core scenarios.

FAQ

Q: Which processor has a higher average benchmark score?

A: The Intel Core i5-5200U has an average benchmark score of 838, while the Intel Xeon X3450 scores 837. The difference is 0.1%, effectively a statistical tie.

Q: How large is the Xeon X3450’s performance lead in multi-core tests?

A: The Xeon X3450 leads the i5-5200U by 12.6% in Cinebench R20 multi-core (1021 vs 892) and by 12.6% in Cinebench R23 multi-core (2431 vs 2125). In Cinebench R15 multi-core, the lead is 12.7% (245 vs 214).

Q: Does the i5-5200U win any head-to-head benchmark?

A: No. The head-to-head data shows zero wins for the i5-5200U and five wins for the Xeon X3450 across all Cinebench tests.

Q: What memory features differentiate the two processors?

A: The i5-5200U supports DDR3 with 25.6 GB/s bandwidth and no ECC. The Xeon X3450 supports DDR3 with 21.3 GB/s bandwidth and includes ECC memory support.

Q: Which processor is designed for mobile use?

A: The Intel Core i5-5200U is a mobile processor with a 15-watt TDP, Intel HD 5500 integrated graphics, and an Intel BGA 1168 socket. The Xeon X3450 is a server/workstation part with a 95-watt TDP and no integrated graphics.

Q: How do the core counts compare?

A: The i5-5200U has 2 cores and 4 threads, while the Xeon X3450 has 4 cores and 8 threads. The Xeon also has more L3 cache: 8 MB shared versus 3 MB shared.

Specification Differences

| Specification | Intel Core i5-5200U | Intel Xeon X3450 |

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

| Cores | 2 | 4 |

| Threads | 4 | 8 |

| Base Clock | 2.20 GHz | 2.67 GHz |

| Boost Clock | 2.70 GHz | 3.20 GHz |

| TDP | 15 W | 95 W |

| Socket | Intel BGA 1168 | Intel Socket 1156 |

| Architecture | Broadwell | Nehalem |

| Codename | Broadwell-U | Lynnfield |

| Process Node | 14 nm | 45 nm |

| Transistors | 1,300 million | 774 million |

| Die Size | 82 mm² | 296 mm² |

| L3 Cache | 3 MB (shared) | 8 MB (shared) |

| Memory Bandwidth | 25.6 GB/s | 21.3 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 2, 12 Lanes (CPU only) | Gen 2, 16 Lanes (CPU only) |

| Integrated Graphics | Intel HD 5500 | None |

| Market Segment | Mobile | Server/Workstation |

| Launch MSRP | $281 | $241 |

The launch MSRP values are the only pricing information available and are stated for reference. The Xeon X3450 was cheaper at launch despite offering higher core counts and more cache, reflecting its older process node and server-market positioning. The i5-5200U’s higher launch MSRP aligns with its newer 14 nm process and integrated graphics, which add manufacturing complexity. Both processors are end-of-life, with the Xeon released on 2009-09-07 and the i5-5200U on 2015-02-28. Neither has an unlocked multiplier, and both use Intel’s LGA/BGA packaging, though the BGA socket on the i5-5200U makes it non-upgradeable.