Intel Core i3-10305T vs Intel Xeon E3-1535M v5 Comparison

The Intel Xeon E3-1535M v5 and the Intel Core i3-10305T are both 4-core, 8-thread processors, yet they come from different eras and target different segments. The Xeon is a mobile workstation part from the Skylake generation, while the Core i3 is a desktop chip from the Comet Lake lineup. Benchmark data shows the two are extremely close in raw performance, with the Xeon nosing ahead in every recorded test, though by margins that are almost negligible in real-world terms.

Head-to-Head Benchmarks

The head-to-head results are remarkably one-sided in terms of wins, but the actual deltas are tiny. The Xeon E3-1535M v5 wins all six recorded Cinebench comparisons, yet the largest advantage is just 1.3%. These are not meaningful performance gaps; they fall well within run-to-run variance for most workloads.

In Cinebench R15 multicore, the Xeon scores 677 against the Core i3's 669, a 1.2% lead. The single-core result in the same test is 95 versus 94, a 1.1% edge for the Xeon. Moving to Cinebench R20, the pattern repeats: the Xeon posts 2824 in multicore versus 2791 for the Core i3, again a 1.2% difference, and 398 versus 393 in single-core, a 1.3% margin. The newest test in the set, Cinebench R23, shows the Xeon at 6726 multicore and 949 single-core, while the Core i3 manages 6647 and 938. Both deltas sit at 1.2%.

The average benchmark score in the database reinforces this picture. The Xeon E3-1535M v5 carries an average score of 1945, while the Core i3-10305T sits at 1922. That is a difference of roughly 1.2%, consistent with the head-to-head results. The percentile rankings are similarly close: the Xeon lands in the 44th percentile of all CPUs tracked, and the Core i3 in the 43rd.

Looking at the nearest rivals for each chip puts these numbers in context. The Xeon's closest competitor is the Intel Xeon E3-1230 v5 with an average score of 1947, just 0.1% higher. The Intel Core i5-1035G7 scores 1948, 0.2% higher, while the Intel Core i7-9850HL sits at 1941, 0.2% lower. The Intel Core i7-8709G is 0.3% ahead at 1950. For the Core i3-10305T, the nearest rival is the Intel Core i7-1180G7 at 1930, 0.4% higher. The Intel Xeon E3-1231 v3 scores 1925, 0.2% higher, and the Intel Core i7-6700T is 0.2% lower at 1918. The AMD Ryzen 3 7320U trails by 0.3% at 1916. These rival deltas are all within a fraction of a percent, confirming that both chips sit in a very tight performance cluster.

The verdict from the data is clear: neither processor offers a meaningful performance advantage over the other in Cinebench workloads. The Xeon wins every iteration of the test, but the margins are so small that they would be imperceptible in practical use. If a workload is bound by single-threaded performance, the Xeon's 1.1% to 1.3% edge is effectively a tie. The same holds for multi-threaded tasks, where the Xeon's 1.2% lead across all three Cinebench versions does not translate into a tangible real-world difference.

Architecture Differences

Despite the similar core and thread counts, the two processors are built on different architectural foundations. The Xeon E3-1535M v5 uses the Skylake architecture, specifically the Skylake-H codename, and belongs to the Xeon E3 (Skylake-H) generation. The Core i3-10305T uses the Comet Lake architecture, with the Comet Lake-R codename, and belongs to the Core i3 (Comet Lake) generation. Both are manufactured on Intel's 14 nm process node and fabricated by Intel, but the transistor counts and die sizes are not directly comparable because the database does not record those figures for the Core i3.

The Xeon is a mobile part in the server and workstation segment, while the Core i3 is a desktop processor. This distinction is reflected in their sockets: the Xeon uses Intel BGA 1440, a soldered mobile socket, whereas the Core i3 uses Intel Socket 1200, a desktop LGA socket. The production status also differs, with the Xeon listed as end-of-life and the Core i3 as active.

Cache configurations are identical on paper. Both processors have 64 KB of L1 cache per core, 256 KB of L2 cache per core, and 8 MB of shared L3 cache. The memory support is where the two diverge. The Xeon supports both DDR3 and DDR4 memory, while the Core i3 supports DDR4 only. Both use a dual-channel memory bus, but the memory bandwidth figures differ: the Xeon records 34.1 GB/s, while the Core i3 records 42.7 GB/s. That is a notable difference, with the Core i3 offering roughly 25% more memory bandwidth.

ECC memory support is another differentiator. The Xeon E3-1535M v5 supports ECC memory, which is typical for a workstation-class processor, while the Core i3-10305T does not. This could be a deciding factor for users who need error-correcting memory for data integrity in professional workloads.

The integrated graphics also differ. The Xeon comes with HD Graphics P530, while the Core i3 has UHD Graphics 630. The database does not include benchmark scores for these iGPUs, so a direct performance comparison is not possible from the recorded data. Clock speeds are close, with the Xeon having a base clock of 2.90 GHz and a boost clock of 3.70 GHz, while the Core i3 has a base clock of 3.00 GHz and a boost clock of 4.00 GHz. The Core i3 has a slight clock advantage in both metrics.

Thermal design power (TDP) is another point of separation. The Xeon is rated at 45 W, while the Core i3 is rated at 35 W. That gives the Core i3 a 10 W advantage in power envelope, which can matter in thermally constrained systems or for users prioritizing efficiency. However, the database does not provide power consumption measurements beyond these TDP ratings.

PCIe support is the same: both use Gen 3 with 16 lanes from the CPU. Neither processor has an unlocked multiplier, so overclocking is not supported on either. The release dates are far apart, with the Xeon released in October 2015 and the Core i3 in March 2021. The launch MSRP for the Xeon is $623, and for the Core i3 it is $143.

FAQ

Q: Which processor is faster in Cinebench R23 multicore?

A: The Intel Xeon E3-1535M v5 scores 6726, which is 1.2% ahead of the Core i3-10305T's 6647. The difference is small but consistent with the Xeon's lead in all other Cinebench tests.

Q: Do both processors have the same core and thread counts?

A: Yes, both have 4 cores and 8 threads. They also share the same cache layout: 64 KB of L1 per core, 256 KB of L2 per core, and 8 MB of shared L3.

Q: Does the Core i3-10305T support ECC memory?

A: No. The Core i3-10305T does not support ECC memory, while the Xeon E3-1535M v5 does. This is a significant distinction for workstation applications that require error correction.

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

A: The Core i3-10305T records 42.7 GB/s, while the Xeon E3-1535M v5 records 34.1 GB/s. The Core i3 offers higher memory bandwidth despite the Xeon's support for both DDR3 and DDR4.

Q: Which processor has a lower TDP?

A: The Core i3-10305T is rated at 35 W, while the Xeon E3-1535M v5 is rated at 45 W. The Core i3 has a lower power envelope.

Q: Are both processors on the same manufacturing process?

A: Yes, both are manufactured on Intel's 14 nm process node. They differ in architecture, with the Xeon using Skylake and the Core i3 using Comet Lake.

The Verdict

The data points to a near-tie in raw performance. The Xeon E3-1535M v5 wins all six head-to-head Cinebench comparisons, but the largest margin is 1.3%, and most sit at 1.2%. The average benchmark scores are 1945 for the Xeon and 1922 for the Core i3, a gap that is unlikely to be noticed outside synthetic benchmarks. The percentile rankings, 44th for the Xeon and 43rd for the Core i3, reflect this proximity.

The choice between the two should be driven by platform and feature requirements rather than performance. The Xeon E3-1535M v5 is a mobile workstation part with ECC memory support, a 45 W TDP, and support for both DDR3 and DDR4. It is end-of-life and was released in 2015. The Core i3-10305T is an active desktop processor with a 35 W TDP, DDR4-only support, no ECC, higher memory bandwidth, and slightly higher clock speeds. It was released in 2021.

For a user building a new system, the Core i3-10305T is the more modern option with a lower power draw and higher memory bandwidth. For a user maintaining or upgrading an existing mobile workstation platform, the Xeon E3-1535M v5 offers ECC support and a socket that matches older BGA 1440 designs. Performance alone will not decide this matchup; the platform and feature set will.

Specification Differences

| Specification | Intel Xeon E3-1535M v5 | Intel Core i3-10305T |

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

| Architecture | Skylake | Comet Lake |

| Codename | Skylake-H | Comet Lake-R |

| Generation | Xeon E3 (Skylake-H) | Core i3 (Comet Lake) |

| Base Clock | 2.90 GHz | 3.00 GHz |

| Boost Clock | 3.70 GHz | 4.00 GHz |

| TDP | 45 W | 35 W |

| Socket | Intel BGA 1440 | Intel Socket 1200 |

| Memory Support | DDR3, DDR4 | DDR4 |

| Memory Bandwidth | 34.1 GB/s | 42.7 GB/s |

| ECC Memory | Yes | No |

| Integrated Graphics | HD Graphics P530 | UHD Graphics 630 |

| Market Segment | Server/Workstation | Desktop |

| Production Status | End-of-life | Active |

| Release Date | 2015-10-26 | 2021-03-15 |

| Launch MSRP | $623 | $143 |

| Part Number | SR2FM | SRH3M |

| Transistors | 2,300 million | Not recorded |

| Die Size | 122 mm² | Not recorded |

| Average Benchmark Score | 1945 | 1922 |

| Percentile vs All CPUs | 44 | 43 |

The two processors share core count, thread count, L1 and L2 cache sizes, L3 cache size, process node, foundry, memory bus width, PCIe generation and lane count, and unlocked multiplier status. The recorded differences are listed above, with the Core i3 offering higher clocks, lower TDP, higher memory bandwidth, and a newer release date, while the Xeon offers ECC support, dual memory type support, and a workstation-class segment designation.