Intel Core i3-1215U vs Intel Xeon Gold 6348 Comparison

The Verdict

The data presents an unambiguous performance hierarchy between these two Intel processors. The Intel Xeon Gold 6348 wins all six head-to-head benchmark comparisons, with victory margins ranging from 563.2% to 566% across Cinebench tests. The Xeon’s 28 cores and 56 threads overwhelm the Core i3-1215U’s 6 cores and 8 threads in every measurable multi-threaded workload. For Cinebench R23 multi-core, the Xeon scores 44,066 versus the i3’s 6,644, a 563.2% advantage. Even in single-core tests, where the i3’s 4.40 GHz boost clock should theoretically help, the Xeon still leads by 563.2% in R23 single-core (6,221 vs 938).

The Xeon Gold 6348 is the clear choice for server and workstation deployments where raw throughput, large L3 cache (42 MB shared), and eight-channel DDR4 memory bandwidth (204.8 GB/s) are non-negotiable. The Core i3-1215U, with its 15 W TDP and integrated UHD Graphics 64EU, targets mobile devices where power efficiency and compact form factor matter more than peak compute. The i3’s only advantages lie in its higher boost clock (4.40 GHz vs 3.50 GHz), dual-channel memory flexibility with DDR5 support, and integrated graphics—features that do not translate into Cinebench wins but serve different use cases. Benchmark results indicate the Xeon is for heavy lifting; the i3 is for everyday mobile computing.

Architecture Differences

The two chips come from different Intel architectural eras and market segments. The Xeon Gold 6348 uses the Ice Lake-SP architecture on the 10 nm process node, while the Core i3-1215U employs the Alder Lake-U architecture, also on 10 nm. Both are fabricated by Intel, but they target vastly different physical envelopes: the Xeon is a server/workstation part on Intel Socket 4189, while the i3 is a mobile processor on Intel BGA 1744.

Core counts diverge sharply. The Xeon has 28 cores and 56 threads, whereas the i3 has 6 cores and 8 threads—the latter indicating a hybrid layout with fewer performance cores and additional efficiency cores. Cache hierarchies reflect this scale difference: the Xeon provides 42 MB of shared L3 cache, while the i3 offers only 10 MB shared L3. Per-core L1 and L2 caches also differ: the Xeon has 64 KB L1 and 1 MB L2 per core, while the i3 has 80 KB L1 and 1.25 MB L2 per core. The i3’s larger per-core caches suggest a design optimized for single-thread efficiency, yet its smaller total cache and core count limit overall throughput.

Memory support separates these CPUs further. The Xeon uses DDR4 with an eight-channel memory bus and 204.8 GB/s bandwidth, plus ECC memory support. The i3 supports both DDR4 and DDR5 over a dual-channel bus, with no listed memory bandwidth figure and no ECC capability. PCIe lanes also differ: the Xeon provides Gen 4 with 64 lanes (CPU only), while the i3 has Gen 4 with 20 lanes (CPU only). The Xeon has no integrated graphics; the i3 includes UHD Graphics 64EU. Production status is Active for both, with the Xeon released on 2021-04-05 and the i3 on 2022-02-22.

FAQ

Q: Which processor wins in Cinebench R23 multi-core performance?

A: The Intel Xeon Gold 6348 wins decisively with a score of 44,066 versus the Core i3-1215U’s 6,644, a 563.2% advantage.

Q: Does the Core i3-1215U have any benchmark wins over the Xeon?

A: No. The head-to-head data shows 6 wins for the Xeon Gold 6348 and 0 wins for the Core i3-1215U across all Cinebench tests (R15, R20, R23, single and multi-core).

Q: Why does the Xeon have a lower boost clock but still win single-core tests?

A: The Xeon’s boost clock is 3.50 GHz versus the i3’s 4.40 GHz, yet the Xeon still wins single-core Cinebench R23 by 563.2% (6,221 vs 938). This suggests the Xeon’s server-class core design and larger 42 MB L3 cache deliver superior instructions per clock, though the data does not specify IPC details.

Q: Can the Core i3-1215U support ECC memory?

A: No. The i3’s specifications list ECC memory as false, while the Xeon Gold 6348 supports ECC memory—a key feature for reliability-sensitive server workloads.

Q: What memory types does each processor support?

A: The Xeon supports DDR4 over an eight-channel bus with 204.8 GB/s bandwidth. The i3 supports both DDR4 and DDR5 over a dual-channel bus, but no memory bandwidth figure is listed in the data.

Q: Are both processors currently in production?

A: Yes, both the Intel Xeon Gold 6348 and Intel Core i3-1215U have a production status of "Active" in the data.

Specification Differences

| Field | Intel Xeon Gold 6348 | Intel Core i3-1215U |

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

| Cores | 28 | 6 |

| Threads | 56 | 8 |

| Base Clock | 2.60 GHz | 1200.00 MHz |

| Boost Clock | 3.50 GHz | 4.40 GHz |

| TDP | 235 W | 15 W |

| Socket | Intel Socket 4189 | Intel BGA 1744 |

| Architecture | Ice Lake | Alder Lake |

| Codename | Ice Lake-SP | Alder Lake-U |

| Generation | Xeon Gold (Ice Lake-SP) | Core i3 (Alder Lake-U) |

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

| L2 Cache | 1 MB (per core) | 1.25 MB (per core) |

| L3 Cache | 42 MB (shared) | 10 MB (shared) |

| Memory Support | DDR4 | DDR4, DDR5 |

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

| Memory Bandwidth | 204.8 GB/s | Not listed |

| ECC Memory | True | False |

| PCIe | Gen 4, 64 Lanes (CPU only) | Gen 4, 20 Lanes (CPU only) |

| Integrated Graphics | None | UHD Graphics 64EU |

| Market Segment | Server/Workstation | Mobile |

| Release Date | 2021-04-05 | 2022-02-22 |

| Part Number | SRKHPCD8068904572204 | SRLFU |

Head-to-Head Benchmarks

The benchmark data shows a consistent and massive performance gap favoring the Xeon Gold 6348 across all six Cinebench tests. The smallest delta is 563.2% in Cinebench R23 multi-core, where the Xeon scores 44,066 against the i3’s 6,644. The largest delta is 566% in Cinebench R15 single-core, with the Xeon at 626 and the i3 at 94.

Cinebench R15 multi-core tells the same story: the Xeon scores 4,441 versus 669 for the i3, a 563.8% margin. In R15 single-core, the Xeon leads 626 to 94, a 566% difference. Moving to R20, multi-core results show 18,507 for the Xeon against 2,790 for the i3, a 563.3% gap; single-core R20 has the Xeon at 2,612 and the i3 at 393, a 564.6% margin. R23 multi-core repeats the pattern with 44,066 vs 6,644 (563.2%), and R23 single-core shows 6,221 vs 938 (563.2%).

These deltas are remarkably consistent—hovering around 563-566%—which indicates the performance ratio is driven by fundamental architectural advantages rather than workload-specific quirks. The Xeon’s 28 cores and 56 threads provide a 4.67x core count advantage and 7x thread advantage, but the benchmark deltas exceed even those ratios, suggesting the Xeon’s per-core efficiency and larger cache also contribute. The i3’s higher boost clock (4.40 GHz) and larger per-core L1/L2 caches cannot compensate for the sheer parallel capability of the Xeon.

Percentile rankings place both CPUs at the 67th percentile among all CPUs, which is coincidental given their vastly different scores. The Xeon’s average benchmark score is 12,746, with nearest rivals including the Intel Core i5-8400 (12,765, -0.2%), AMD EPYC 7502 (12,709, +0.3%), and AMD Ryzen Threadripper 3990X (12,786, -0.3%). The i3’s average is 12,604, with nearest rivals including the Intel Atom x7809C (12,607, 0%) and Intel Core i3-10105F (12,644, -0.3%). These averages reflect a mix of benchmarks beyond Cinebench, but the head-to-head data clearly shows the Xeon’s dominance in rendering workloads.

Where Each One Wins

The Xeon Gold 6348 wins every benchmark in the head-to-head comparison, making it the unequivocal choice for compute-intensive server and workstation tasks. Its 42 MB shared L3 cache and eight-channel DDR4 memory with 204.8 GB/s bandwidth feed 28 cores efficiently, as evidenced by Cinebench multi-core scores exceeding 44,000 in R23. The ECC memory support and 64 PCIe Gen 4 lanes position it for data centers, scientific computing, and virtualized environments where reliability and I/O expansion are critical. The Xeon’s 235 W TDP, while high, is acceptable for socketed server platforms designed to dissipate heat and power such processors.

The Core i3-1215U, despite losing all head-to-head benchmarks, wins in scenarios not captured by Cinebench. Its 15 W TDP makes it suitable for fanless or passively cooled mobile devices, and its integrated UHD Graphics 64EU eliminates the need for a discrete GPU. The dual-channel memory bus supports both DDR4 and DDR5, offering flexibility in laptop designs. The 4.40 GHz boost clock and larger per-core L1/L2 caches (80 KB and 1.25 MB respectively) suggest strong single-thread responsiveness for everyday applications, even though Cinebench single-core scores (938 in R23) lag far behind the Xeon. The i3’s 20 PCIe Gen 4 lanes suffice for typical mobile peripherals, and its BGA 1744 socket means it is soldered to motherboards, not upgradeable—a trade-off for thin-and-light portability.

The data implies a clear division: the Xeon is for workloads that scale with core count and memory bandwidth, while the i3 is for power-constrained mobile use cases where integrated graphics and low TDP outweigh raw performance. Neither chip is a general-purpose replacement for the other; they occupy opposite ends of Intel’s product spectrum. The Xeon’s 563-566% margins in rendering benchmarks highlight how far apart these segments are, yet both CPUs hold the same 67th percentile ranking—a reminder that percentile scores reflect a broad CPU population, not head-to-head parity.