Intel Core i5-1035G4 vs Intel Xeon E3-1545M v5 Comparison

The Intel Xeon E3-1545M v5 and the Intel Core i5-1035G4 are both 4-core, 8-thread processors, but they represent two very different eras and design goals for Intel. The Xeon is a Skylake-H part from 2016 aimed at workstations, while the Core i5 is a 10nm Ice Lake-U part from 2019 built for thin-and-light mobility. The benchmark data reveals a remarkably tight contest, with the older Xeon holding a slight but consistent edge across every single Cinebench test.

Head-to-Head Benchmarks

The most striking aspect of this comparison is the uniformity of the results. The Xeon E3-1545M v5 wins all six head-to-head benchmark comparisons, but the margins are razor-thin. In Cinebench R15 multicore, the Xeon scores 654 versus the Core i5's 648, a difference of just 0.9%. The single-core R15 test shows a similar story: 92 for the Xeon against 91 for the Core i5, a 1.1% advantage for the older chip.

Moving to Cinebench R20, the pattern holds. The Xeon's multicore score of 2728 edges out the Core i5's 2703 by 0.9%. In single-core R20, the Xeon posts 385 against 381, a 1% lead. The most recent Cinebench R23 results continue the trend, with the Xeon scoring 6497 multicore and 917 single-core, versus 6436 and 908 for the Core i5, respectively. The deltas are consistent: 0.9% in multicore and 1% in single-core for R23.

These numbers tell a clear story: the Xeon E3-1545M v5 is faster in every measured workload, but the performance gap is almost negligible in practice. The average benchmark score for the Xeon is 1879, placing it in the 43rd percentile of all CPUs. The Core i5-1035G4 has an average score of 1861, sitting at the 42nd percentile. In the nearestRivals data, the Xeon's closest competitor is the Intel Processor U300 with an average score of 1881 (a -0.1% delta), while the Core i5's nearest rival is the Intel Core i3-9350K at 1867 (-0.3% delta). Interestingly, each chip appears in the other's nearestRivals list: the Xeon is listed as a rival to the Core i5 with a -0.9% delta, confirming how close these two parts truly are.

The largest single victory for the Xeon is in Cinebench R15 single-core, where its 1.1% lead is the biggest delta of any test. Even there, the difference between 92 and 91 points is well within run-to-run variance on most systems. The data suggests that for pure compute performance, choosing between these two based on benchmark scores alone would be a coin flip.

Architecture Differences

Despite the similar core counts, these are fundamentally different designs. The Xeon E3-1545M v5 is built on Intel's 14 nm process node using the Skylake architecture, specifically the Skylake-H codename. It packs 2,300 million transistors into a 171 mm² die. The Core i5-1035G4, in contrast, uses the 10 nm process node with the Sunny Cove architecture (Ice Lake-U codename) and has a much smaller 123 mm² die, with no transistor count listed in the data.

Cache configurations differ notably. The Xeon has 64 KB of L1 cache per core and 256 KB of L2 per core, with 8 MB of shared L3 cache. The Core i5 has a larger 80 KB L1 per core, the same 256 KB L2 per core, but a smaller 6 MB of shared L3. The Core i5's larger L1 cache is a sign of its newer architecture, yet the Xeon's larger L3 pool likely contributes to its slightly better benchmark results.

Memory support is another clear differentiator. The Xeon supports both DDR3 and DDR4 memory in a dual-channel configuration, with a memory bandwidth of 34.1 GB/s. It also supports ECC memory, a critical feature for workstation reliability. The Core i5 supports only DDR4, also dual-channel, but with a significantly higher memory bandwidth of 51.2 GB/s. The Core i5 does not support ECC memory.

The integrated graphics also differ. The Xeon features Iris Pro Graphics P580, while the Core i5 has Iris Plus graphics. Neither is a gaming powerhouse, but the newer Iris Plus in the Core i5 benefits from architectural improvements in the Ice Lake generation.

The Xeon uses the Intel BGA 1440 socket, while the Core i5 uses the Intel BGA 1526 socket, meaning they are not interchangeable. The Xeon has a 45W TDP, triple the Core i5's 15W TDP, reflecting its workstation orientation. The Core i5's PCIe support is listed simply as "Gen 3," while the Xeon specifies "Gen 3, 16 Lanes (CPU only)."

The Verdict

The data shows a clear but narrow winner: the Intel Xeon E3-1545M v5. It wins all six benchmark comparisons, albeit by margins of 0.9% to 1.1%. For any real-world application, these differences are imperceptible. The Xeon's advantage comes from its higher base clock of 2.90 GHz (versus the Core i5's 1100.00 MHz) and its higher boost clock of 3.80 GHz (versus 3.70 GHz). The Core i5's lower TDP of 15W versus 45W is a massive advantage for mobile use, but it doesn't translate into higher performance in these Cinebench tests.

Who should pick which? The Xeon E3-1545M v5 is the choice for systems requiring ECC memory support, as the Core i5 lacks this feature entirely. Its workstation segment designation and support for both DDR3 and DDR4 also make it more flexible for legacy server or professional environments. The Core i5-1035G4, with its 10 nm process, 15W TDP, and active production status, is clearly aimed at modern thin-and-light laptops where battery life and thermal management are paramount. The Xeon's status is end-of-life, while the Core i5 is still active.

If you need ECC memory, the Xeon is the only option. If you need a low-power mobile part, the Core i5 is the only option. From a pure performance standpoint, the Xeon's 0.9%-1.1% lead means it is technically the faster processor, but the difference is unlikely to be measurable outside of synthetic benchmarks.

Specification Differences

The following specifications differ between the Intel Xeon E3-1545M v5 and the Intel Core i5-1035G4:

• Base Clock: Xeon at 2.90 GHz vs Core i5 at 1100.00 MHz
• Boost Clock: Xeon at 3.80 GHz vs Core i5 at 3.70 GHz
• TDP: Xeon at 45W vs Core i5 at 15W
• Socket: Intel BGA 1440 vs Intel BGA 1526
• Architecture: Skylake vs Ice Lake (Sunny Cove-U)
• Process Node: 14 nm vs 10 nm
• Die Size: 171 mm² vs 123 mm²
• Transistors: 2,300 million vs not listed
• L1 Cache: 64 KB per core vs 80 KB per core
• L3 Cache: 8 MB shared vs 6 MB shared
• Memory Support: DDR3, DDR4 vs DDR4 only
• Memory Bandwidth: 34.1 GB/s vs 51.2 GB/s
• ECC Memory: Supported vs Not supported
• Integrated Graphics: Iris Pro Graphics P580 vs Iris Plus
• Market Segment: Server/Workstation vs Mobile
• Production Status: End-of-life vs Active
• Release Date: 2016-01-23 vs 2019-07-31
• Launch MSRP: $679 vs not listed
• Part Number: SR2QU vs SRGKK

FAQ

Q: Which processor is faster in single-core performance?

A: The Intel Xeon E3-1545M v5 wins all single-core Cinebench tests. It scores 92 in R15, 385 in R20, and 917 in R23, versus the Core i5's 91, 381, and 908, respectively.

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

A: No. The Core i5-1035G4 does not support ECC memory. The Xeon E3-1545M v5 does support ECC memory, making it suitable for error-correcting workloads.

Q: What is the TDP difference between these two processors?

A: The Xeon E3-1545M v5 has a TDP of 45W, while the Core i5-1035G4 has a TDP of 15W. This makes the Core i5 significantly more power-efficient for mobile applications.

Q: Which processor has a smaller manufacturing process?

A: The Core i5-1035G4 is built on Intel's 10 nm process, while the Xeon E3-1545M v5 uses the older 14 nm process. The Core i5's die size is also smaller at 123 mm² versus the Xeon's 171 mm².

Q: Are these processors socket-compatible?

A: No. The Xeon E3-1545M v5 uses the Intel BGA 1440 socket, while the Core i5-1035G4 uses the Intel BGA 1526 socket. They are not interchangeable.

Q: How do their average benchmark scores compare?

A: The Xeon E3-1545M v5 has an average benchmark score of 1879, placing it in the 43rd percentile of all CPUs. The Core i5-1035G4 has an average score of 1861, placing it in the 42nd percentile.

Where Each One Wins

The Intel Xeon E3-1545M v5 wins in every Cinebench benchmark category, but its victories are narrow. Its most significant win is in Cinebench R15 single-core with a 1.1% delta over the Core i5. It also wins all multicore tests by 0.9%. The Xeon's advantages in this matchup are its higher base and boost clocks, larger 8 MB L3 cache, ECC memory support, and dual memory type compatibility (DDR3 and DDR4). It is the better choice for a workstation that demands ECC reliability or needs to work with older DDR3 memory modules. Its 45W TDP is a non-issue in a desktop or large laptop chassis.

The Intel Core i5-1035G4 wins no benchmark comparisons, but it has clear advantages outside of raw compute performance. Its 15W TDP is one-third of the Xeon's, making it far better suited for thin-and-light laptops with limited cooling and battery capacity. It uses a newer 10 nm process and a smaller 123 mm² die, which contributes to its efficiency. Its memory bandwidth of 51.2 GB/s is significantly higher than the Xeon's 34.1 GB/s, which could benefit integrated graphics workloads. The Core i5 is the right pick for a modern, power-conscious mobile build, while the Xeon is the pick for legacy workstation tasks that require ECC or DDR3 support.