Intel Core i5-1035G7 vs Intel Xeon E3-1535M v5 Comparison

The Intel Core i5-1035G7 and Intel Xeon E3-1535M v5 are both quad-core, eight-thread processors, but they represent vastly different design philosophies and eras. The i5-1035G7 is a modern, power-sipping mobile chip built for thin-and-light laptops, while the Xeon E3-1535M v5 is a higher-power workstation mobile part aimed at professional workloads. Benchmark data shows the two are remarkably close in performance, despite their architectural and market differences. The i5-1035G7 edges out the Xeon in every single test, but the margins are razor-thin, ranging from 0% to 0.3%. This creates an interesting comparison where a 2019 mobile processor with a 15 W TDP essentially matches a 2015 workstation chip with a 45 W TDP in Cinebench tests.

FAQ

Q: Which processor is faster in multi-core Cinebench R23?

A: The Intel Core i5-1035G7 scores 6736, while the Xeon E3-1535M v5 scores 6726. The i5 wins by a delta of 0.1%, which is essentially a tie.

Q: How do the two chips compare in single-core performance?

A: They are virtually identical. In Cinebench R15 single-core, both score 95. In Cinebench R20, the i5-1035G7 scores 399 versus 398 for the Xeon, a 0.3% difference. In R23, the i5 scores 951 versus 949, a 0.2% difference.

Q: Do these processors support ECC memory?

A: Yes, the Xeon E3-1535M v5 supports ECC memory. The Core i5-1035G7 does not support ECC memory.

Q: What is the TDP difference between the two?

A: The Core i5-1035G7 has a TDP of 15 W, while the Xeon E3-1535M v5 has a TDP of 45 W. This represents a significant difference in power consumption and thermal output.

Q: Which chip has a larger L3 cache?

A: The Xeon E3-1535M v5 has an 8 MB shared L3 cache. The Core i5-1035G7 has a smaller 6 MB shared L3 cache.

Q: What is the production status of each processor?

A: The Intel Core i5-1035G7 is currently listed as "Active" in production. The Intel Xeon E3-1535M v5 is listed as "End-of-life."

Architecture Differences

The two processors come from different architectural generations and are built on different manufacturing processes. The Intel Core i5-1035G7 is based on the Ice Lake architecture, specifically the Ice Lake-U codename, and is manufactured on Intel's 10 nm process node. Its die size is 123 mm². In contrast, the Intel Xeon E3-1535M v5 uses the Skylake architecture, with the Skylake-H codename, and is built on the older 14 nm process node. The Xeon has a die size of 122 mm² and contains 2,300 million transistors.

These architectural differences lead to some notable variations in on-die resources. The i5-1035G7 features a larger L1 cache at 80 KB per core, compared to the Xeon's 64 KB per core. Both processors share the same L2 cache size of 256 KB per core. However, the Xeon compensates with a larger L3 cache, offering 8 MB shared, versus the i5's 6 MB shared.

The integrated graphics also differ. The i5-1035G7 comes with Iris Plus graphics, while the Xeon E3-1535M v5 is equipped with the more basic HD Graphics P530. The memory support is another key differentiator. The i5-1035G7 supports DDR4 memory only, while the Xeon supports both DDR3 and DDR4. The memory bandwidth figures reflect this, with the i5 offering 51.2 GB/s and the Xeon providing 34.1 GB/s.

The processors also target different market segments. The i5-1035G7 is classified as a Mobile processor, while the Xeon E3-1535M v5 is aimed at the Server/Workstation segment. Their sockets reflect this, with the i5 using Intel BGA 1526 and the Xeon using Intel BGA 1440. The Xeon also includes ECC memory support, a feature commonly found in workstation parts, and has 16 PCIe Gen 3 lanes (CPU only).

Head-to-Head Benchmarks

The benchmark results are remarkably consistent across all tests, with the Intel Core i5-1035G7 winning every single head-to-head comparison, but by the slimmest of margins. In Cinebench R15 multicore, the i5-1035G7 scores 678 against the Xeon's 677, a 0.1% lead. The single-core R15 test is a dead heat, with both chips scoring an identical 95.

Moving to Cinebench R20, the pattern holds. The i5-1035G7 achieves a multicore score of 2829, while the Xeon scores 2824, a 0.2% difference. In single-core R20, the i5 scores 399 versus 398 for the Xeon, a 0.3% lead. This is the largest margin of victory for the i5 across all tests.

The most recent Cinebench R23 results continue the trend. In multicore, the i5-1035G7 scores 6736, and the Xeon scores 6726, a 0.1% difference. In single-core R23, the i5 scores 951, and the Xeon scores 949, a 0.2% lead. Overall, the i5-1035G7 wins 6 out of 6 benchmarks, but the maximum delta is only 0.3%.

The average benchmark scores from the nearestRivals data confirm this near-parity. The i5-1035G7 has an average benchmark score of 1948, while the Xeon E3-1535M v5 has an average score of 1945. The Xeon's nearestRivals list shows a delta of -0.2% against the i5, and the i5's list shows a +0.2% delta over the Xeon. Both chips sit at the 44th percentile among all CPUs. This is a statistical tie, meaning that in practical use, the two processors would be indistinguishable in performance in these workloads.

Specification Differences

The two processors differ in several key specification fields, even though their performance is nearly identical. The most obvious difference is in the base clock speed. The Intel Core i5-1035G7 has a base clock of 1200.00 MHz, while the Intel Xeon E3-1535M v5 has a much higher base clock of 2.90 GHz. Interestingly, both chips share the identical boost clock of 3.70 GHz.

Power consumption is another major differentiator. The i5-1035G7 has a TDP of just 15 W, making it suitable for fanless or ultra-portable designs. The Xeon E3-1535M v5, on the other hand, has a TDP of 45 W, requiring more substantial cooling.

The memory support also differs significantly. The i5-1035G7 supports only DDR4 memory, while the Xeon supports both DDR3 and DDR4. The i5 offers a higher theoretical memory bandwidth of 51.2 GB/s, compared to the Xeon's 34.1 GB/s. The Xeon supports ECC memory, which the i5 does not.

The integrated graphics are different as well. The i5-1035G7 uses Iris Plus graphics, while the Xeon uses HD Graphics P530. The Xeon also has a different socket (Intel BGA 1440) compared to the i5's Intel BGA 1526. The processors belong to different generations and architectures, with the i5 being Ice Lake (Sunny Cove-U) and the Xeon being Skylake (Skylake-H). The Xeon is marked as End-of-life and has a launch MSRP of $623, while the i5 has no listed launch MSRP.

The Verdict

The data presents a fascinating case of generational efficiency. The Intel Core i5-1035G7, despite having a dramatically lower base clock and a TDP of just 15 W, manages to match or slightly beat the Intel Xeon E3-1535M v5 in every Cinebench test. This confirms the architectural improvements in Ice Lake over Skylake. The i5's 10 nm process and newer design allow it to achieve the same performance as the older 14 nm Xeon while using a third of the power.

For a user building or buying a new system, the choice is clear. The i5-1035G7 offers the same performance with far better power efficiency, a newer architecture, and active production status. The Xeon E3-1535M v5 is an End-of-life product from 2015, and its only advantages are ECC memory support, a larger 8 MB L3 cache, and broader memory compatibility with DDR3 and DDR4 support. The Xeon also has a launch MSRP of $623, which is notable for a chip with this performance level.

However, for someone with an existing system that requires ECC memory for workstation reliability, the Xeon E3-1535M v5 remains a viable option. Its performance is effectively identical to the i5-1035G7, so there is no performance penalty for choosing the older chip. The choice ultimately comes down to platform requirements. If you need ECC support and can handle the higher power draw, the Xeon is the pick. If you want modern efficiency and a current product, the i5-1035G7 is the better choice. Benchmark results indicate that either way, you will get the same level of Cinebench performance.