Intel Core i3-9100E vs Intel Xeon E3-1240L v5 Comparison

Head-to-Head Benchmarks

The benchmark data tells a remarkably consistent story: the Intel Xeon E3-1240L v5 wins every single head-to-head matchup, though by margins so slim they border on statistical noise. In Cinebench R15 multicore, the Xeon scores 560 against the Core i3-9100E's 559, a 0.2% edge. Single-core R15 is a dead tie at 78 points each. The pattern repeats in R20 multicore (2336 vs 2330, a 0.3% lead) and R20 single-core (329 vs 328, also 0.3%). The largest gap appears in R23 multicore, where the Xeon posts 5564 against 5549 — still just a 0.3% difference. R23 single-core again shows 785 vs 783, another 0.3% lead. With six wins for the Xeon and zero for the Core i3, the data is unambiguous, but the practical implications are minimal. These are effectively equivalent performers in synthetic rendering workloads.

Looking at the broader benchmark averages, the two CPUs sit within 0.2% of each other: the Xeon averages 1609 across its benchmark suite, while the Core i3 averages 1605. Both land at the 39th percentile of all CPUs tracked, meaning they occupy the same performance tier relative to the wider market. The nearest rivals confirm this positioning — the Core i7-10610U scores 1611 (0.1% above the Xeon), the Core i7-970 scores 1613 (0.2% above), and the Core i3-9100T scores 1620 (0.7% above). When a processor's closest competitor is a low-power mobile chip and a decade-old desktop part, you know you are looking at a distinctly mid-pack product. The Xeon and Core i3 are not just close to each other; they are statistically inseparable in every benchmark category tested.

Architecture Differences

The two processors come from different Intel families and different points in the product lifecycle, yet share the same fundamental silicon recipe. Both use the 14 nm process node and are fabricated by Intel. The Xeon E3-1240L v5 is built on the Skylake architecture (codename Skylake-DT) and belongs to the Xeon E3 generation released in October 2015. The Core i3-9100E uses the Coffee Lake architecture (codename Coffee Lake) and belongs to the Core i3 Coffee Lake Refresh generation, released in August 2018. Despite the three-year gap, both feature 4 physical cores. The critical difference lies in threading: the Xeon supports 8 threads via Hyper-Threading, while the Core i3 is limited to 4 threads with no simultaneous multithreading. This explains why the Xeon can match the Core i3 in multicore workloads despite clocking significantly lower.

Clock speeds diverge sharply. The Xeon runs at a 2.10 GHz base clock and boosts to 3.20 GHz. The Core i3 runs at 3.10 GHz base and boosts to 3.70 GHz — a full 1.0 GHz higher at base and 0.5 GHz higher at boost. The Xeon compensates for its clock disadvantage with its extra threads, which is why multicore scores end up nearly identical. Thermal design power tells a similar story of different priorities: the Xeon is rated at 25 W TDP, while the Core i3 draws 65 W. That 40 W gap represents the Xeon's server-oriented efficiency focus versus the Core i3's desktop performance approach. The Xeon's die is smaller at 122 mm² with 1,750 million transistors; the Core i3's die measures 126 mm² (transistor count not listed). Cache configurations also differ: the Xeon carries 8 MB of shared L3 cache, while the Core i3 has 6 MB shared. Both have 64 KB L1 and 256 KB L2 per core.

Memory support separates them further. The Xeon supports both DDR3 and DDR4 with dual-channel memory and 34.1 GB/s bandwidth. The Core i3 supports only DDR4, also dual-channel, but with higher bandwidth at 38.4 GB/s. Both support ECC memory, and both use PCIe Gen 3 with 16 lanes from the CPU. The Core i3 includes integrated UHD Graphics 630; the Xeon has no integrated graphics at all. The Xeon targets the server/workstation segment, while the Core i3 is a desktop part. Both are end-of-life products with locked multipliers. The Xeon's launch MSRP was $278, while the Core i3 launched at $122.

Where Each One Wins

The benchmark results show no meaningful performance advantage for either processor in any workload category. The Xeon wins all six head-to-head tests, but the largest margin is 0.3% — far below what any user would perceive in real-world use. The Xeon's theoretical advantage lies in its 8 threads versus 4, which should help in heavily threaded applications that can scale beyond four threads. However, the Cinebench results suggest the Core i3's much higher clock speeds (3.10 GHz base vs 2.10 GHz) fully offset the Xeon's threading advantage in these specific workloads. If a workload scales particularly well with threads and is not clock-sensitive, the Xeon might pull slightly further ahead; if a workload is single-threaded and clock-hungry, the Core i3's higher boost clock could theoretically give it an edge. But the data does not show any such edge in the tests conducted.

The Xeon's clear win is in power efficiency. At 25 W TDP versus 65 W, the Xeon delivers the same performance at less than half the power envelope. This makes it the obvious choice for small-form-factor builds, always-on systems, or any environment where heat and electricity draw matter more than peak capability. The Core i3, by contrast, has no measured performance win at all. Its integrated UHD Graphics 630 is a functional advantage — it allows a build without a discrete GPU — but that is a feature difference, not a benchmark victory. The Core i3's higher memory bandwidth (38.4 GB/s vs 34.1 GB/s) is also a spec-sheet win, though it does not translate into a measurable benchmark advantage in this data.

FAQ

Q: Which CPU is faster in multi-core workloads?

A: The Xeon E3-1240L v5 wins all multicore tests, but by tiny margins: 0.2% in Cinebench R15 multicore (560 vs 559) and 0.3% in both R20 multicore (2336 vs 2330) and R23 multicore (5564 vs 5549). These differences are effectively negligible.

Q: Are the single-core scores identical?

A: Nearly. In Cinebench R15 single-core, both score exactly 78. In R20, the Xeon scores 329 vs 328; in R23, it scores 785 vs 783. The Xeon leads by 0.3% in the newer tests.

Q: Why does the Xeon have a lower clock speed but still match the Core i3?

A: The Xeon has 8 threads versus the Core i3's 4 threads. Its base clock is 2.10 GHz and boost is 3.20 GHz, compared to 3.10 GHz base and 3.70 GHz boost on the Core i3. The extra threads compensate for the clock deficit in multithreaded workloads.

Q: Which processor uses less power?

A: The Xeon E3-1240L v5 is rated at 25 W TDP, while the Core i3-9100E is rated at 65 W TDP. The Xeon uses significantly less power while delivering essentially identical benchmark performance.

Q: Do both support ECC memory?

A: Yes, both the Xeon and the Core i3 support ECC memory. However, the Xeon supports both DDR3 and DDR4, while the Core i3 supports only DDR4.

Q: Which has more cache?

A: The Xeon has 8 MB of shared L3 cache, while the Core i3 has 6 MB shared. Both have 64 KB L1 and 256 KB L2 per core.

Specification Differences

| Specification | Intel Xeon E3-1240L v5 | Intel Core i3-9100E |

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

| Architecture | Skylake | Coffee Lake |

| Generation | Xeon E3 (Skylake-DT) | Core i3 (Coffee Lake Refresh) |

| Cores / Threads | 4 / 8 | 4 / 4 |

| Base Clock | 2.10 GHz | 3.10 GHz |

| Boost Clock | 3.20 GHz | 3.70 GHz |

| TDP | 25 W | 65 W |

| Process Node | 14 nm | 14 nm |

| Die Size | 122 mm² | 126 mm² |

| Transistors | 1,750 million | Not listed |

| L3 Cache | 8 MB (shared) | 6 MB (shared) |

| Memory Support | DDR3, DDR4 | DDR4 |

| Memory Bandwidth | 34.1 GB/s | 38.4 GB/s |

| Integrated Graphics | None | UHD Graphics 630 |

| Market Segment | Server/Workstation | Desktop |

| Release Date | October 18, 2015 | August 31, 2018 |

| Launch MSRP | $278 | $122 |

| Part Number | SR2LN | SRGE0SRGQY |

The Verdict

The data paints a clear picture: there is no performance winner here. The Xeon E3-1240L v5 technically wins all six benchmarks, but the margins are so small (0% to 0.3%) that no workload would show a perceptible difference. Both CPUs sit at the 39th percentile of all processors, and their average benchmark scores differ by just 4 points out of roughly 1600. If performance is the only criterion, flip a coin. The Xeon's 8 threads and lower TDP (25 W vs 65 W) make it the better choice for compact or power-sensitive systems where every watt matters. The Core i3's integrated UHD Graphics 630 gives it an edge for builds that want to skip a discrete GPU entirely, and its higher memory bandwidth (38.4 GB/s vs 34.1 GB/s) is a minor spec-sheet plus. The Core i3 also launched at a much lower MSRP ($122 vs $278), though both are end-of-life parts now.

For a server, workstation, or always-on appliance where efficiency and ECC support are priorities, the Xeon E3-1240L v5 is the logical pick. For a basic desktop build where integrated graphics and a higher base clock are attractive, the Core i3-9100E makes sense. But the benchmark results are unambiguous: neither CPU offers a meaningful performance advantage over the other. Choose based on platform features, power budget, and graphics needs — not on Cinebench scores, because those scores say they are equal.