Intel Core i3-10105 vs Intel Xeon Bronze 3408U Comparison

The Intel Core i3-10105 and Intel Xeon Bronze 3408U occupy different corners of the Intel lineup, yet their benchmark data reveals a surprisingly competitive overlap. The Core i3-10105 is a 4-core, 8-thread desktop part built on the Comet Lake architecture, while the Xeon Bronze 3408U is an 8-core, 8-thread server processor based on Sapphire Rapids. The head-to-head results show the Xeon winning 12 of 17 tests, but the Core i3 secures decisive victories in several specialized workloads, making the choice between them entirely dependent on the task at hand.

Head-to-Head Benchmarks

The Xeon Bronze 3408U dominates the Cinebench suite across the board. In Cinebench R15 multi-core, it scores 853 against the Core i3's 708, a 17% advantage. The single-core R15 test tells a similar story: 120 versus 99, a 17.5% lead. Moving to R20, the Xeon posts 3558 multi-core and 502 single-core, compared to 2952 and 416 for the Core i3, with deltas of 17% and 17.1% respectively. The R23 results follow the same pattern: 8473 versus 7029 in multi-core and 1196 versus 992 in single-core, both roughly 17% apart.

The Xeon's margin widens significantly in certain PassMark tests. In find prime numbers, it scores 119 versus a mere 20 for the Core i3, an 83.2% difference that highlights the Xeon's raw integer throughput capability. Floating point math shows a 38.4% gap, with the Xeon at 29142 against 17949. Data encryption is another clear Xeon win: 5274 versus 2723, a 48.4% margin. The Xeon also leads in physics (1114 versus 467, 58.1% ahead), extended instructions (10387 versus 8648, 16.7% ahead), and multithread (9969 versus 8241, 17.3% ahead).

However, the Core i3 strikes back in four areas. Its most dramatic win is in single-thread performance, scoring 2589 against the Xeon's 1516, a 70.8% advantage. Data compression shows the Core i3 at 128464 versus 95714, a 34.2% lead. Integer math favors the Core i3 at 28577 versus 22803, a 25.3% margin. Random string sorting also goes to the Core i3: 15899 versus 12073, a 31.7% difference. These wins are not trivial; they represent workloads where the Core i3's higher clock speeds and architecture efficiency overcome the Xeon's core count disadvantage.

Where Each One Wins

The Xeon Bronze 3408U wins in every Cinebench iteration, both single and multi-core, establishing it as the stronger choice for rendering and general compute tasks that scale with thread count. Its 8 physical cores, even without hyper-threading, provide a consistent 17% advantage in these synthetic workloads. The Xeon also excels in encryption (48.4% ahead), physics simulation (58.1% ahead), and floating-point math (38.4% ahead). For prime number calculation, the Xeon is in a different league entirely, scoring nearly six times higher. These results point toward workloads involving scientific computing, cryptography, and physics engines.

The Core i3-10105 wins in single-thread performance by a massive 70.8% margin, suggesting it is better suited for applications that rely heavily on single-core speed, such as legacy software or lightly threaded games. Its data compression lead of 34.2% indicates strength in file archiving and database workloads that use compression algorithms. The integer math win (25.3%) and random string sorting win (31.7%) further reinforce a profile favoring branch-heavy, non-floating-point tasks. The Core i3 also benefits from integrated UHD Graphics 630, which the Xeon lacks entirely, making it a more complete package for systems without a discrete GPU.

Architecture Differences

The two processors are built on fundamentally different nodes and designs. The Core i3-10105 uses Intel's 14 nm Comet Lake process, while the Xeon Bronze 3408U uses a 10 nm Sapphire Rapids process. The Core i3 has 4 cores and 8 threads, with base and boost clocks of 3.70 GHz and 4.40 GHz respectively. The Xeon has 8 cores but only 8 threads, with much lower clocks: 1.80 GHz base and 1.90 GHz boost. This clock differential explains the Core i3's single-thread dominance.

Cache configurations differ substantially. The Core i3 features 64 KB of L1 per core, 256 KB of L2 per core, and 6 MB of shared L3 cache. The Xeon offers 80 KB of L1 per core, 2 MB of L2 per core, and a much larger 22.5 MB L3 cache. The Xeon's larger caches help compensate for its lower clock speeds in multi-threaded workloads. Memory support also diverges: the Core i3 uses DDR4 in dual-channel configuration with 42.7 GB/s bandwidth, while the Xeon supports DDR5 in eight-channel configuration with 256.0 GB/s bandwidth. The Xeon also supports ECC memory, which the Core i3 does not.

PCIe capabilities are another major split. The Core i3 provides PCIe Gen 3 with 16 lanes, while the Xeon offers PCIe Gen 5 with 80 lanes, a massive difference for expansion and I/O throughput. The Xeon's socket is Intel Socket 4677, whereas the Core i3 uses Intel Socket 1200. The Xeon has a TDP of 125 watts versus the Core i3's 65 watts, reflecting its server-class power envelope. The Xeon was released in January 2023, while the Core i3 launched in March 2021. Both are currently listed as Active in production.

The Verdict

The data clearly separates these two processors by use case. The Xeon Bronze 3408U is the superior choice for multi-threaded compute workloads, as evidenced by its consistent 17% lead across Cinebench tests and larger margins in encryption, physics, and floating-point math. Its 8 cores, 22.5 MB L3 cache, eight-channel DDR5 memory support, and 80 PCIe Gen 5 lanes make it a legitimate server/workstation part. The 125-watt TDP and lack of integrated graphics are acceptable trade-offs for a system that requires ECC memory and massive memory bandwidth.

The Core i3-10105 is the better pick for single-thread-sensitive tasks and specific compression workloads. Its 70.8% single-thread advantage is enormous, and its wins in data compression, integer math, and random string sorting demonstrate that it handles certain data-processing tasks more efficiently than the Xeon. The 65-watt TDP, integrated UHD Graphics 630, and lower platform costs make it an attractive option for desktop builds where raw multi-core performance is not the priority. Its 42.7 GB/s memory bandwidth and dual-channel DDR4 support are modest but sufficient for its target market.

Neither processor is a universal winner. The Xeon's 12 benchmark wins outweigh the Core i3's 5, but the Core i3's victories are in categories where the margin is often larger. Both sit at the 67th percentile of all CPUs, and their average benchmark scores are close: 12316 for the Core i3 versus 12019 for the Xeon. The Core i3's nearest rival is the Intel Core i7-6700K, which it edges by 0.6%, while the Xeon's closest competitor is the Intel Xeon Gold 6314U, which leads it by 0.1%. Choose the Xeon for server-grade throughput, choose the Core i3 for desktop responsiveness.

FAQ

Q: Which processor has higher single-core performance?

A: The Intel Core i3-10105 wins single-core tests decisively. In PassMark single-thread, it scores 2589 versus the Xeon Bronze 3408U's 1516, a 70.8% advantage. It also leads in Cinebench R23 single-core (992 versus 1196 is actually a Xeon win, so the PassMark result is the key differentiator).

Q: Does the Xeon Bronze 3408U support ECC memory?

A: Yes, the Xeon Bronze 3408U supports ECC memory. The Intel Core i3-10105 does not support ECC memory. This is a critical distinction for server and workstation reliability requirements.

Q: How do the two compare in data compression workloads?

A: The Core i3-10105 is significantly better at data compression, scoring 128464 in the PassMark data compression test versus the Xeon's 95714, a 34.2% lead. This suggests the Core i3 handles compression algorithms more efficiently.

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

A: The Xeon Bronze 3408U has a massive advantage, offering 256.0 GB/s bandwidth via eight-channel DDR5, while the Core i3-10105 provides 42.7 GB/s via dual-channel DDR4. The Xeon's bandwidth is roughly six times higher.

Q: Which processor has more PCIe lanes?

A: The Xeon Bronze 3408U offers PCIe Gen 5 with 80 lanes, while the Core i3-10105 provides PCIe Gen 3 with 16 lanes. The Xeon provides five times more lanes and a newer generation.

Q: How do their average benchmark scores compare?

A: The Core i3-10105 has an average benchmark score of 12316, while the Xeon Bronze 3408U scores 12019. They are very close, with the Core i3 holding a 2.5% edge in this aggregate metric.

Specification Differences

| Specification | Intel Core i3-10105 | Intel Xeon Bronze 3408U |

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

| Cores | 4 | 8 |

| Threads | 8 | 8 |

| Base Clock | 3.70 GHz | 1.80 GHz |

| Boost Clock | 4.40 GHz | 1.90 GHz |

| TDP | 65 W | 125 W |

| Socket | Intel Socket 1200 | Intel Socket 4677 |

| Process Node | 14 nm | 10 nm |

| L1 Cache | 64 KB (per core) | 80 KB (per core) |

| L2 Cache | 256 KB (per core) | 2 MB (per core) |

| L3 Cache | 6 MB (shared) | 22.5 MB |

| Memory Support | DDR4 | DDR5 |

| Memory Bus | Dual-channel | Eight-channel |

| Memory Bandwidth | 42.7 GB/s | 256.0 GB/s |

| ECC Memory | No | Yes |

| PCIe | Gen 3, 16 Lanes | Gen 5, 80 Lanes |

| Integrated Graphics | UHD Graphics 630 | None |

| Market Segment | Desktop | Server/Workstation |

| Release Date | 2021-03-15 | 2023-01-09 |

| Launch MSRP | $122 | $425 |

| Part Number | SRH3P | SRMGB |