Intel Core i3-1315U vs Intel Xeon 6315P Comparison

The Intel Core i3-1315U and the Intel Xeon 6315P are both active Raptor Lake parts, but they target radically different segments: one is a 15-watt mobile processor, the other a 55-watt server/workstation chip. Despite the Xeon’s higher power envelope and newer release date, the benchmark data reveals a surprisingly competitive picture, with each processor dominating distinct workloads. The Xeon 6315P wins 14 of the 17 head-to-head comparisons, but the Core i3-1315U secures decisive victories in three specific areas that highlight their architectural priorities.

Head-to-Head Benchmarks

The Xeon 6315P establishes a consistent lead across all six Cinebench tests, with a uniform deltaPct of -7.5% (from the i3’s perspective) in both single-core and multi-core runs. In Cinebench R23, the Xeon scores 10134 multi-core and 1430 single-core, versus the i3’s 9374 and 1323, respectively. This pattern repeats in R15 and R20, where the Xeon leads by the same 7.5% margin in every instance, including the R15 single-core test where the Xeon’s 144 points edge out the i3’s 133. These consistent margins suggest a fundamental clock-speed advantage rather than a core-count benefit, since the i3 actually has more cores and threads.

The Xeon’s dominance extends into PassMark’s compute-heavy workloads. Its extended instructions score of 10539 crushes the i3’s 7413, a 29.7% advantage. The gap widens dramatically in prime number finding, where the Xeon’s 150 points dwarf the i3’s 41, a 72.7% deficit for the i3. Floating-point math also favors the Xeon, which posts 33496 versus 27012, a 19.4% lead. The Xeon further wins the PassMark physics test (1156 vs. 706, a 38.9% gap), the multithread test (11923 vs. 11482, 3.7%), and random string sorting (14487 vs. 14028, 3.2%). Its single-thread score of 3795 beats the i3’s 3380 by 10.9%.

However, the Core i3-1315U fights back in three notable areas. Its integer math score of 37644 exceeds the Xeon’s 27046 by a substantial 39.2%. Data encryption is another i3 stronghold, scoring 7583 versus 5470, a 38.6% advantage. The i3 also wins data compression, posting 126436 against the Xeon’s 118313, a 6.9% edge. These wins are not trivial—they show that in specific integer-heavy and data-movement tasks, the i3’s six cores and eight threads can outperform the Xeon’s four cores and four threads, despite the Xeon’s higher clock speeds.

Looking at overall averages, the i3’s avgBenchmarkScore is 15022, while the Xeon’s is 14574, a reversal of the head-to-head trend. This is because the i3’s massive integer math and encryption wins pull its average up, while the Xeon’s leads in most tests are more moderate. Both CPUs sit at the 69th percentile versus all CPUs, and their nearest rivals reflect similar performance tiers: the i3 is within 0.7% of the AMD EPYC 74F3 and within 1.1% of the Intel Core i3-10320, while the Xeon matches the AMD EPYC 7473X exactly (0% delta) and sits within 0.5% of the AMD Ryzen 3 4100.

Architecture Differences

Both processors share the same 10 nm process node, Intel foundry, and Raptor Lake architecture, but they diverge in configuration. The Core i3-1315U is a mobile-part with 6 cores and 8 threads, indicating a hybrid layout with performance and efficiency cores (though the FACT PACK does not specify the exact mix). Its base clock is 1200 MHz, boosting to 4.50 GHz, and it carries 10 MB of shared L3 cache. The Xeon 6315P, by contrast, is a server/workstation part with 4 cores and 4 threads—no hyper-threading benefit—but it runs at a much higher 2800 MHz base clock, boosting to 4.70 GHz. Its L3 cache is larger at 12 MB shared.

The cache hierarchy is otherwise identical: both have 80 KB L1 per core and 1.25 MB L2 per core. The Xeon’s die size is listed at 163 mm², while the i3’s is not provided. Memory support is the same—DDR4 and DDR5, dual-channel—but the Xeon adds ECC memory support, which the i3 lacks. This is a critical differentiator for server reliability. PCIe capabilities also differ: the i3 offers Gen 4 with 8 lanes (CPU only), while the Xeon provides Gen 5 with 16 lanes (CPU only), doubling the bandwidth and lane count for expansion.

Integrated graphics further separate the two. The i3 includes UHD Graphics 64EU, while the Xeon has no integrated graphics (N/A). The Xeon’s market segment is explicitly Server/Workstation, whereas the i3 is Mobile. Its socket is Intel Socket 1700, while the i3 uses Intel BGA 1744, meaning the Xeon is socketed for upgradeability while the i3 is soldered. The Xeon was released on 2025-02-23, over two years after the i3’s 2023-01-03 launch. Neither processor has an unlocked multiplier.

The Verdict

The data paints a clear picture for workload-specific selection. The Xeon 6315P is the superior choice for single-threaded and floating-point-heavy tasks. Its 7.5% lead across all Cinebench tests, combined with a 19.4% advantage in floating-point math and a 10.9% lead in single-thread PassMark, makes it the stronger candidate for rendering, scientific computing, and general productivity where per-core performance matters. The 72.7% gap in prime number finding further suggests an advantage in cryptographic or number-theoretic workloads. Its ECC memory support and Gen 5 PCIe with 16 lanes also make it the only viable option for servers requiring data integrity and high-bandwidth expansion.

The Core i3-1315U is the pick for integer-heavy and data-movement tasks. Its 39.2% lead in integer math and 38.6% lead in data encryption are not marginal; they are dominant wins that could translate to real-world advantages in compression, hashing, and certain database operations. Its 6.9% data compression win adds to this profile. The i3 also benefits from integrated graphics, making it a self-contained solution for mobile or compact systems where a discrete GPU is unnecessary. Its lower TDP (15W vs. 55W) is a qualitative advantage for battery life and thermal management, though the FACT PACK provides no efficiency metrics.

Neither processor is a universal winner. The Xeon leads in 14 of 17 benchmarks, but the i3’s three wins are large enough to swing the average benchmark score in its favor (15022 vs. 14574). Users who prioritize multi-core rendering or server-grade reliability should choose the Xeon 6315P. Users who need integer throughput, encryption performance, or an integrated GPU should choose the Core i3-1315U. The 69th percentile ranking for both confirms they are mid-pack performers in the broader CPU landscape, with the i3’s nearest rival being the AMD EPYC 74F3 (0.7% delta) and the Xeon’s being the AMD EPYC 7473X (0% delta).

Specification Differences

| Specification | Intel Core i3-1315U | Intel Xeon 6315P |

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

| Cores | 6 | 4 |

| Threads | 8 | 4 |

| Base Clock | 1200 MHz | 2800 MHz |

| Boost Clock | 4.50 GHz | 4.70 GHz |

| TDP | 15 W | 55 W |

| Socket | Intel BGA 1744 | Intel Socket 1700 |

| L3 Cache | 10 MB (shared) | 12 MB (shared) |

| Die Size | Not provided | 163 mm² |

| ECC Memory | No | Yes |

| PCIe | Gen 4, 8 Lanes | Gen 5, 16 Lanes |

| Integrated Graphics | UHD Graphics 64EU | N/A |

| Market Segment | Mobile | Server/Workstation |

| Release Date | 2023-01-03 | 2025-02-23 |

| Launch MSRP | $309 | $213 |

| Part Number | SRMLV | SRPLX |

FAQ

Q: Which CPU has a higher boost clock?

A: The Intel Xeon 6315P has a boost clock of 4.70 GHz, while the Intel Core i3-1315U boosts to 4.50 GHz.

Q: Does the Intel Core i3-1315U have more cores than the Xeon 6315P?

A: Yes, the i3-1315U has 6 cores and 8 threads, while the Xeon 6315P has 4 cores and 4 threads.

Q: Which processor supports ECC memory?

A: The Intel Xeon 6315P supports ECC memory; the Intel Core i3-1315U does not.

Q: In which benchmark does the Core i3-1315U have its largest win over the Xeon 6315P?

A: The i3-1315U’s largest win is in PassMark integer math, where it scores 37644 versus the Xeon’s 27046, a 39.2% lead. It also wins data encryption by 38.6% (7583 vs. 5470).

Q: What is the Xeon 6315P’s advantage in Cinebench R23 multi-core?

A: The Xeon 6315P scores 10134 in Cinebench R23 multi-core, compared to the i3-1315U’s 9374, a 7.5% advantage.

Q: Are both processors on the same process node?

A: Yes, both the Intel Core i3-1315U and the Intel Xeon 6315P are manufactured on a 10 nm process node by Intel.