Intel Core i5-7300HQ vs Intel Xeon E3-1225 v5 Comparison

The Intel Xeon E3-1225 v5 and the Intel Core i5-7300HQ are both 4-core, 4-thread processors built on Intel's 14 nm process, but they target different ends of the computing spectrum. The Xeon is a server/workstation part from the Skylake generation, while the i5 is a mobile chip from Kaby Lake. The benchmark data shows a clear and consistent performance hierarchy between them, with the Xeon taking every single head-to-head comparison by a significant margin. This analysis breaks down those results, explores the architectural reasons behind them, and determines which processor is the right choice based strictly on the available data.

Head-to-Head Benchmarks

The performance gap between these two processors is remarkably uniform across all tested workloads. In the Cinebench R15 multi-core test, the Intel Xeon E3-1225 v5 scores 510, while the Intel Core i5-7300HQ scores 434. This translates to a 17.5% advantage for the Xeon. The single-core result for R15 is similar, with the Xeon scoring 72 against the i5's 61, an 18% lead.

Moving to the more demanding Cinebench R20 suite, the pattern holds. The Xeon E3-1225 v5 posts a multi-core score of 2127, compared to 1812 for the i5-7300HQ, a 17.4% difference. In single-core R20, the Xeon scores 300, while the i5 scores 255, a 17.6% lead. The consistency of these deltas suggests that the Xeon's advantage is not specific to any one instruction set or workload type but is a general property of its higher operating frequencies.

The newest test in the pack, Cinebench R23, reinforces the trend. The Xeon's multi-core score of 5065 eclipses the i5-7300HQ's 4316, again a 17.4% difference. The single-core R23 result shows the Xeon scoring 715 against 609, which is a 17.4% advantage. Across all six head-to-head benchmarks, the Xeon E3-1225 v5 wins decisively, with every deltaPct falling between 17.4% and 18%. This uniformity is striking: it indicates that the Xeon's lead is a steady, structural advantage rather than a workload-specific quirk.

It is also worth noting the i5-7300HQ has additional benchmark data not present for the Xeon, specifically Geekbench scores of 3044 multi-core and 1052 single-core. While these cannot be directly compared to the Xeon, they help place the i5 in the broader context of the database, where its average benchmark score is 1448. The Xeon's average score is 1465. Both processors sit at the 38th percentile of all CPUs, meaning they are statistically similar in overall average performance despite the Xeon's clear win in the shared Cinebench tests. The Xeon's closest rival is the Intel Core i3-7350K, with a deltaPct of 0.2%, while the i5-7300HQ's closest rival is the AMD Opteron 6378, with a deltaPct of 0%.

The Verdict

The data is unambiguous. The Intel Xeon E3-1225 v5 is the superior processor in every benchmark where a direct comparison exists. It delivers a consistent performance advantage of roughly 17.5% across all Cinebench R15, R20, and R23 tests, both single and multi-core. The Xeon achieves this through a higher base clock of 3.30 GHz and a boost clock of 3.70 GHz, compared to the i5-7300HQ's 2.50 GHz base and 3.50 GHz boost. The higher clocks directly translate into the large performance margin seen in the benchmarks.

The Intel Core i5-7300HQ, however, is not without its own justification. Its 45 W TDP is significantly lower than the Xeon's 80 W TDP. This makes the i5 a more power-efficient part, which is a critical factor for mobile platforms where thermal and battery constraints are paramount. The Xeon is a socketed desktop/workstation chip (Intel Socket 1151), while the i5 is a soldered mobile part (Intel BGA 1440), so they are not directly swappable in the same system. For a user building a low-power, compact mobile system, the i5-7300HQ is the only choice here. For any scenario where raw compute performance is the primary goal, the Xeon E3-1225 v5 is the definitive winner based on the benchmark scores.

Where Each One Wins

The Intel Xeon E3-1225 v5 wins in all raw performance categories. It is the clear choice for compute-intensive tasks like video rendering, 3D modeling, and software compilation, as evidenced by its commanding leads in the Cinebench multi-core tests. Its single-core performance is equally dominant, which benefits tasks like spreadsheet calculations, web browsing, and general application responsiveness. The Xeon's support for ECC memory also makes it suitable for workstation or entry-level server roles where data integrity is critical.

The Intel Core i5-7300HQ wins in the efficiency and platform integration categories. With a TDP of 45 W, it is designed for a laptop or all-in-one system where the Xeon's 80 W TDP would be prohibitive. The i5-7300HQ has no direct benchmark wins, but its lower power draw is its primary advantage. The data shows it is a capable processor in its own right, with an average benchmark score only 1.2% lower than the Xeon's, but its wins are in power consumption and mobile form factor rather than raw speed. The i5 also features Intel HD Graphics 630, while the Xeon has HD Graphics P530; both are integrated, but the benchmark data does not include graphics comparisons.

FAQ

Q: Which processor is faster in multi-core workloads?

A: The Intel Xeon E3-1225 v5 is consistently faster. It leads the Intel Core i5-7300HQ by 17.5% in Cinebench R15 multi-core (510 vs 434), by 17.4% in R20 multi-core (2127 vs 1812), and by 17.4% in R23 multi-core (5065 vs 4316).

Q: Is the single-core performance gap as large as the multi-core gap?

A: Yes, it is nearly identical. The Xeon leads by 18% in R15 single-core (72 vs 61), 17.6% in R20 single-core (300 vs 255), and 17.4% in R23 single-core (715 vs 609). The advantage is uniform across both single and multi-threaded tests.

Q: Do these processors have the same number of cores and threads?

A: Yes. Both the Intel Xeon E3-1225 v5 and the Intel Core i5-7300HQ have 4 cores and 4 threads. The performance difference is not due to core count but rather to clock speed and architecture.

Q: What is the key architectural difference that explains the performance gap?

A: The primary factor is clock speed. The Xeon has a base clock of 3.30 GHz and a boost clock of 3.70 GHz, while the i5-7300HQ has a base clock of 2.50 GHz and a boost clock of 3.50 GHz. The Xeon's higher clocks, combined with its larger 8 MB shared L3 cache versus the i5's 6 MB, contribute to its performance lead.

Q: Which processor supports ECC memory?

A: Only the Intel Xeon E3-1225 v5 supports ECC memory. The Intel Core i5-7300HQ does not have this feature, which is a significant distinction for users requiring error-correcting memory for data-critical applications.

Q: How do their average benchmark scores compare?

A: The Xeon E3-1225 v5 has an average benchmark score of 1465, while the i5-7300HQ has an average score of 1448. Both processors are in the 38th percentile of all CPUs, indicating they are closely matched in overall average performance across all benchmarks in the database.

Architecture Differences

The two processors come from different Intel architecture generations. The Intel Xeon E3-1225 v5 is based on the Skylake architecture (codename Skylake-DT), while the Intel Core i5-7300HQ is based on the newer Kaby Lake architecture (codename Kaby Lake-H). Despite the generational difference, both are built on the same 14 nm process node at Intel's foundry.

The most impactful difference is in the cache hierarchy. The Xeon E3-1225 v5 features 8 MB of shared L3 cache, while the i5-7300HQ has 6 MB. Both have 64 KB of L1 cache per core and 256 KB of L2 cache per core. The Xeon's larger last-level cache provides a performance buffer for data-heavy workloads, helping to further separate it from the i5 in benchmark scores.

Clock speeds are the other major differentiator. The Xeon operates at a 3.30 GHz base clock and 3.70 GHz boost clock, which are significantly higher than the i5-7300HQ's 2.50 GHz base and 3.50 GHz boost. This explains the near-constant performance delta observed in the benchmarks. The Xeon also has a higher TDP at 80 W, compared to 45 W for the i5, which reflects the higher power envelope required for its superior clock speeds.

Platform support also differs. The Xeon uses Intel Socket 1151, while the i5 uses the soldered Intel BGA 1440 package. The Xeon supports ECC memory, whereas the i5 does not. Both support DDR3 and DDR4 memory in a dual-channel configuration, but the Xeon's memory bandwidth is listed at 34.1 GB/s, while no figure is available for the i5. Both CPUs provide PCIe Gen 3 with 16 lanes (CPU only). The Xeon's integrated graphics are HD Graphics P530, while the i5 has Intel HD Graphics 630. The Xeon's market segment is Server/Workstation, and the i5's is Mobile, which aligns with their respective sockets, power envelopes, and feature sets. The Xeon's die size is 122 mm² with 1,750 million transistors, while the i5's die size is 126 mm², though its transistor count is not listed.