Intel Core i7-5850HQ vs Intel Xeon E3-1265L v4 Comparison

Head-to-Head Benchmarks

The recorded data delivers a clean sweep: the Intel Xeon E3-1265L v4 wins all six head-to-head Cinebench comparisons against the Intel Core i7-5850HQ. The margins are narrow, but they are consistent across every workload tested, from single-core to multi-core rendering.

In Cinebench R15 multicore, the Xeon scores 595 against 588 for the Core i7, a delta of 1.2%. The single-core result in the same test shows the Xeon at 84 versus 82, a 2.4% lead, which is the largest percentage gap in the entire comparison. Moving to Cinebench R20, the Xeon posts 2482 multicore and 350 single-core, while the Core i7 records 2451 and 345 respectively. That translates to 1.3% and 1.4% advantages. The Cinebench R23 results follow the same pattern: 5910 versus 5836 in multicore and 834 versus 823 in single-core, both at a 1.3% delta.

The data indicates that the Xeon's advantage is not concentrated in one type of workload. It holds the lead in both the heavily threaded multicore tests and the lightly threaded single-core tests. The Core i7-5850HQ never manages to flip a result in its favor, even though its higher base and boost clock speeds might suggest otherwise. The narrowness of the margins, mostly around 1.3%, means that in real-world usage these two processors would feel very similar in raw compute throughput, but the benchmark record is unambiguous: the Xeon is the faster part in every measured scenario.

When placed in the broader database context, both CPUs sit at the 40th percentile among all processors. The Xeon's average benchmark score is 1709, which exactly matches the Intel Xeon E5-1620 v3, and it is only 0.2% behind the Intel Core i7-990X and 0.4% behind both the AMD Ryzen 7 PRO 2700U and the Intel Core i7-4910MQ. The Core i7-5850HQ averages 1688, tying the Intel Core i7-3770K, sitting 0.1% behind the AMD Ryzen 7 3750H, 0.3% behind the Intel Core i7-980, and 0.3% ahead of the Intel Core i5-4690K. The two processors are effectively peers in the database's overall ranking, separated by only 21 points on average score, which is a 1.2% difference.

Architecture Differences

Both processors are built on Intel's 14 nm process node and share the Broadwell architecture, but they target different market segments and physical platforms. The Xeon E3-1265L v4 comes from the Broadwell-DT line, while the Core i7-5850HQ comes from Broadwell-H. The Xeon uses Intel Socket 1150, whereas the Core i7 uses the soldered Intel BGA 1364 package, which means the i7 is not upgradeable and is designed for a fixed motherboard implementation.

The core configuration is identical on paper: 4 cores, 8 threads, 64 KB of L1 cache per core, 256 KB of L2 cache per core, and 6 MB of shared L3 cache. The die size is also the same at 182 mm². The key architectural split comes in clock speeds and power envelopes. The Xeon runs at a 2.30 GHz base clock and 3.30 GHz boost clock, with a 35 W TDP. The Core i7 runs higher, at 2.70 GHz base and 3.60 GHz boost, but consumes more power, rated at 47 W TDP. This explains the benchmark results: the Core i7 has the raw clock advantage, yet the Xeon still wins, suggesting that the Xeon's power management or binning allows it to sustain higher effective performance in these specific Cinebench runs.

Memory support is another dividing line. Both support DDR3 with a dual-channel memory bus and identical 29.9 GB/s memory bandwidth. However, the Xeon includes ECC memory support, a feature that the Core i7 lacks. This positions the Xeon for server and workstation reliability workloads where data integrity is paramount. The integrated graphics also differ: the Xeon carries Intel Iris Pro P6300, while the Core i7 uses Iris Pro Graphics 6200. Both are capable integrated solutions, but the naming indicates different GPU configurations within the same Broadwell family.

The PCIe interface is the same for both: Gen 3 with 16 lanes from the CPU. Neither processor has an unlocked multiplier, so overclocking is not an option from the factory. The production status for both is end-of-life, and both were released on the same date. The part numbers differ, SR2B3 for the Xeon and SR2BH for the Core i7, which confirms they are distinct silicon variants despite their architectural similarity.

Where Each One Wins

The Xeon E3-1265L v4 wins every benchmark comparison, so the use-case split is not about which processor is faster in a given task. Instead, the differentiation comes from platform features and power constraints. The Xeon's 35 W TDP is significantly lower than the Core i7's 47 W TDP, making it the more efficient choice for compact or thermally constrained systems, such as small form factor servers, network appliances, or workstation builds where heat dissipation is a concern. Its ECC memory support is a decisive factor for anyone running long-duration computation, databases, or file servers where a memory error could corrupt data.

The Core i7-5850HQ, despite losing the benchmark comparison, offers higher clock speeds on paper. Its 2.70 GHz base and 3.60 GHz boost clocks are 0.40 GHz and 0.30 GHz higher respectively than the Xeon's. In workloads that are not captured by the Cinebench suite, such as lightly threaded legacy applications or tasks that are highly latency-sensitive, the Core i7's clock advantage could translate into a real-world edge, even though the recorded data does not show it in these specific tests. The Core i7 is also a desktop segment part, meaning it is likely integrated into a BGA motherboard with a complete system design, which can be an advantage for manufacturers seeking a fixed, cost-effective platform without the need for socketed CPU upgrades.

For the database's measured workloads, the Xeon is the clear pick. For scenarios outside those measurements, the Core i7's higher clocks and desktop positioning might appeal to users who prioritize peak frequency over benchmark scores, but the data provides no evidence that this translates into a win in Cinebench.

FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Xeon E3-1265L v4 has an average benchmark score of 1709, while the Intel Core i7-5850HQ scores 1688, a difference of 21 points in favor of the Xeon.

Q: Does the Core i7-5850HQ win any head-to-head benchmark?

A: No. The head-to-head record shows 6 wins for the Xeon E3-1265L v4 and 0 wins for the Core i7-5850HQ across all tested Cinebench R15, R20, and R23 workloads.

Q: What is the biggest performance margin between the two?

A: The largest margin is in Cinebench R15 single-core, where the Xeon scores 84 versus the Core i7's 82, a 2.4% advantage. All other margins range from 1.2% to 1.4%.

Q: Do both processors support ECC memory?

A: No. The Xeon E3-1265L v4 supports ECC memory, while the Core i7-5850HQ does not. Both support DDR3 with dual-channel memory and 29.9 GB/s bandwidth.

Q: Are the clock speeds different?

A: Yes. The Xeon has a 2.30 GHz base clock and 3.30 GHz boost clock. The Core i7 has a 2.70 GHz base clock and 3.60 GHz boost clock. The Core i7 runs at higher clocks but also has a higher TDP of 47 W versus 35 W for the Xeon.

Q: What are the nearest rivals for each processor in the database?

A: The Xeon's nearest rival is the Intel Xeon E5-1620 v3 with an identical average score of 1709. The Core i7's nearest rival is the Intel Core i7-3770K with an identical average score of 1688.

The Verdict

The data points to the Intel Xeon E3-1265L v4 as the faster processor in benchmark terms. It wins all six head-to-head comparisons, holds a higher average benchmark score, and does so while operating at a lower TDP of 35 W compared to the Core i7's 47 W. For anyone whose priority is raw Cinebench performance per watt, the Xeon is the superior choice. The margin is slim, but the consistency across all tests indicates a genuine, if modest, performance edge.

The Core i7-5850HQ is not without merit. Its higher base and boost clocks suggest that in scenarios outside the measured suite, it could offer competitive performance, particularly in single-threaded tasks that are sensitive to clock speed. It also represents the desktop segment, which may be easier to integrate into a fixed BGA platform. However, the recorded data does not show any benchmark win for this processor, so any such advantage remains speculative.

For a server or workstation build where ECC memory is required, the Xeon is the only choice between the two, as the Core i7 lacks that feature entirely. For a desktop system where the soldered BGA package is acceptable and power consumption is less of a concern, the Core i7 could still be a viable option, but it would be slower in the measured Cinebench workloads. The verdict from the database is straightforward: the Xeon E3-1265L v4 outperforms the Core i7-5850HQ in every recorded benchmark, and it does so with lower power consumption, making it the recommended part for performance-focused builds that can use its socket and ECC support.

Specification Differences

| Specification | Intel Xeon E3-1265L v4 | Intel Core i7-5850HQ |

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

| Base Clock | 2.30 GHz | 2.70 GHz |

| Boost Clock | 3.30 GHz | 3.60 GHz |

| TDP | 35 W | 47 W |

| Socket | Intel Socket 1150 | Intel BGA 1364 |

| Codename | Broadwell-DT | Broadwell-H |

| Generation | Xeon E3 (Broadwell-DT) | Core i7 (Broadwell-H) |

| ECC Memory | Yes | No |

| Integrated Graphics | Intel Iris Pro P6300 | Iris Pro Graphics 6200 |

| Market Segment | Server/Workstation | Desktop |

| Launch MSRP | $417 | $434 |

| Part Number | SR2B3 | SR2BH |

| Average Benchmark Score | 1709 | 1688 |

| Percentile | 40 | 40 |

The two processors share the same core count, thread count, cache hierarchy, process node, die size, memory type, memory bus, memory bandwidth, PCIe configuration, and release date. All other listed specifications differ, as shown above.