Intel Core i5-1035G4 vs Intel Xeon E5-2620 v3 Comparison

Head-to-Head Benchmarks

The benchmark data presents an unusually consistent picture: the Intel Xeon E5-2620 v3 wins every single recorded head-to-head test against the Intel Core i5-1035G4. Across six Cinebench workloads, the Xeon leads by margins ranging from 2.2% to 2.6%, a narrow but uniform advantage that holds in both single-threaded and multi-threaded scenarios.

In Cinebench R15, the Xeon scores 664 in multi-core against 648 for the Core i5, a 2.4% gap. The single-core result is nearly identical in percentage terms: 93 versus 91, a 2.2% lead for the Xeon. Moving to Cinebench R20, the pattern repeats: the Xeon posts 2769 in multi-core versus 2703, again a 2.4% difference, while single-core shows 391 versus 381, a 2.6% edge. Cinebench R23 closes the set with the Xeon at 6595 multi-core and 931 single-core, against 6436 and 908 for the Core i5, representing 2.4% and 2.5% leads respectively.

What stands out is the consistency of these deltas. The Xeon does not dramatically outclass the Core i5 in any single test; instead, it produces a steady, repeatable advantage across every workload. This suggests a fundamental throughput edge that scales with the task, rather than a workload-specific strength. The Core i5, despite its newer architecture, cannot overcome the Xeon's additional cores and threads in any measured benchmark.

The average benchmark scores corroborate this. The Xeon E5-2620 v3 holds an average score of 1907, while the Core i5-1035G4 averages 1861, a 2.5% overall difference. In the database's percentile ranking, the Xeon sits at the 43rd percentile of all CPUs, one point above the Core i5's 42nd percentile. These are closely matched processors in overall performance, but the Xeon edges ahead in every recorded metric.

Where Each One Wins

The Xeon E5-2620 v3 wins all six head-to-head benchmarks, but the nature of those wins matters for real-world usage. Its multi-core advantages, while small in percentage terms (2.4% in R15, R20, and R23), reflect the benefit of 6 cores and 12 threads versus 4 cores and 8 threads. For heavily threaded workloads such as video encoding, 3D rendering, or scientific computation, the Xeon's extra parallel resources translate directly into shorter completion times.

The single-core wins are more surprising given the architectural gap. The Xeon is a Haswell-EP part from 2014, built on a 22 nm process, while the Core i5 is an Ice Lake-U part from 2019, built on 10 nm. Yet the Xeon still leads single-core Cinebench scores by 2.2% to 2.6%. This is likely due to the Xeon's higher base clock of 2.40 GHz versus 1.10 GHz for the Core i5, even though the Core i5 boosts higher at 3.70 GHz versus 3.20 GHz. In short-duration single-threaded bursts, the Xeon's higher sustained clock appears to give it an edge.

The Core i5's wins are not reflected in the benchmark data, but its feature set points to different strengths. It integrates Iris Plus graphics, which the Xeon lacks entirely. It also consumes far less power: 15 W TDP versus 85 W for the Xeon. For fanless or battery-powered designs, the Core i5 is the only viable option. The Core i5 also uses a smaller die (123 mm² versus 356 mm²) and a more modern 10 nm process, which contributes to its efficiency.

In practical terms, the Xeon wins for raw compute throughput, especially in multi-threaded server or workstation tasks. The Core i5 wins for mobile deployments, integrated graphics, and power-constrained environments. Neither processor dominates the other in a way that makes the choice obvious without considering the usage context.

Architecture Differences

The two processors come from different eras and target different segments. The Core i5-1035G4 is an Ice Lake-U mobile part, built on Intel's 10 nm process with a die size of 123 mm². It features 4 cores and 8 threads, with a base clock of 1.10 GHz and a boost clock of 3.70 GHz. Its cache hierarchy includes 80 KB of L1 per core, 256 KB of L2 per core, and 6 MB of shared L3. The memory interface is dual-channel DDR4 with a bandwidth of 51.2 GB/s. It supports PCIe Gen 3 and includes Iris Plus integrated graphics. Its TDP is 15 W, and it uses the Intel BGA 1526 socket. The production status is active, with a release date of July 2019.

The Xeon E5-2620 v3 is a Haswell-EP server/workstation part, built on Intel's 22 nm process with a die size of 356 mm² and 2,600 million transistors. It features 6 cores and 12 threads, with a base clock of 2.40 GHz and a boost clock of 3.20 GHz. Its cache hierarchy includes 64 KB of L1 per core, 256 KB of L2 per core, and 15 MB of shared L3, which is 2.5 times the Core i5's L3. The memory interface is quad-channel DDR4 with a bandwidth of 59.7 GB/s, about 17% higher than the Core i5. It supports PCIe Gen 3 with 40 lanes (CPU only) and includes ECC memory support, which the Core i5 lacks. Its TDP is 85 W, and it uses the Intel Socket 2011-3. The production status is end-of-life, with a release date of September 2014.

The architectural differences explain the benchmark results. The Xeon's two extra cores and four extra threads provide a parallel throughput advantage, particularly in multi-threaded workloads. Its larger L3 cache (15 MB versus 6 MB) reduces memory latency for frequently accessed data. Its quad-channel memory interface provides higher bandwidth, which benefits memory-intensive server applications. The higher base clock (2.40 GHz versus 1.10 GHz) helps in lightly threaded tasks where boost clocks are not sustained.

The Core i5 counters with a much newer process node (10 nm versus 22 nm), which enables a dramatically lower TDP (15 W versus 85 W). It also includes integrated Iris Plus graphics, a feature absent from the Xeon. The Core i5's higher boost clock (3.70 GHz versus 3.20 GHz) gives it a theoretical peak in short single-threaded bursts, but the recorded benchmarks show the Xeon still wins in single-core tests.

The Verdict

The benchmark data is unambiguous: the Intel Xeon E5-2620 v3 outperforms the Intel Core i5-1035G4 in every recorded Cinebench test, with leads of 2.2% to 2.6% across single-core and multi-core workloads. Its average benchmark score of 1907 versus 1861, and its 43rd versus 42nd percentile ranking, confirm a small but consistent overall advantage.

The Xeon is the correct choice for workloads that prioritize raw compute throughput, especially multi-threaded rendering, encoding, or server-side processing. Its 6 cores, 12 threads, 15 MB of L3 cache, and quad-channel memory bandwidth provide a solid foundation for such tasks. It also supports ECC memory, which is critical for data integrity in server environments. However, it is an end-of-life product with an 85 W TDP, making it unsuitable for mobile or power-constrained designs.

The Core i5-1035G4 is the correct choice for mobile or compact systems where power consumption and integrated graphics matter more than peak compute performance. Its 15 W TDP allows for fanless or battery-powered operation, and its Iris Plus graphics eliminate the need for a discrete GPU in basic display tasks. Its 10 nm process and active production status mean it remains a current product. The 2.2% to 2.6% performance deficit in benchmarks is a modest price to pay for these advantages.

For users who need a server/workstation CPU with ECC support and higher memory bandwidth, the Xeon E5-2620 v3 is the data-backed choice. For users who need a mobile or embedded CPU with integrated graphics and low power draw, the Core i5-1035G4 is the only viable option. The Xeon wins on performance; the Core i5 wins on efficiency and features. The recorded data does not support a single universal winner.

FAQ

Q: Which processor has the higher multi-core performance in Cinebench R23?

A: The Intel Xeon E5-2620 v3 scores 6595 in Cinebench R23 multi-core, while the Intel Core i5-1035G4 scores 6436. The Xeon leads by 2.4%.

Q: Does the Core i5-1035G4 win any benchmark against the Xeon E5-2620 v3?

A: No. In the recorded head-to-head tests, the Xeon E5-2620 v3 wins all six Cinebench benchmarks (R15, R20, and R23, each in single-core and multi-core).

Q: What is the difference in memory bandwidth between the two processors?

A: The Xeon E5-2620 v3 has a memory bandwidth of 59.7 GB/s, while the Core i5-1035G4 has 51.2 GB/s. The Xeon also uses a quad-channel memory bus, whereas the Core i5 uses dual-channel.

Q: Does the Core i5-1035G4 support ECC memory?

A: No. ECC memory support is listed as false for the Core i5-1035G4, while the Xeon E5-2620 v3 supports ECC memory.

Q: Which processor has integrated graphics?

A: The Core i5-1035G4 includes Iris Plus integrated graphics. The Xeon E5-2620 v3 has no integrated graphics.

Q: How do the average benchmark scores compare?

A: The Xeon E5-2620 v3 has an average benchmark score of 1907, while the Core i5-1035G4 has an average of 1861. The Xeon also ranks at the 43rd percentile of all CPUs, compared to the Core i5's 42nd percentile.