Intel Core i3-1305U vs Intel Xeon Gold 6342 Comparison

The Intel Xeon Gold 6342 and Intel Core i3-1305U occupy opposite extremes of Intel’s product stack, yet both are active production parts. The former is a 24-core Ice Lake-SP server processor with 48 threads and a 230 W TDP, while the latter is a 5-core Raptor Lake-U mobile chip with 6 threads and a 15 W TDP. The benchmark data confirms a complete rout: the Xeon wins all six head-to-head Cinebench tests, with every deltaPct hovering near 457–458%. The Core i3’s only advantages lie in areas not covered by the head-to-head suite — PassMark sub-tests — and in platform characteristics like integrated graphics and a lower power envelope. This analysis walks through the exact score gaps, the use-case split, and what the data says about who should pick which.

Head-to-Head Benchmarks

The Cinebench suite leaves no ambiguity about raw compute dominance. In Cinebench R15 multicore, the Xeon Gold 6342 scores 4033 against the Core i3-1305U’s 723, a delta of 457.8%. The single-core R15 test shows the same pattern: 569 versus 102, again 457.8%. This is not a marginal win; it is a fivefold-plus advantage across the board.

Moving to Cinebench R20, the Xeon posts 16805 multicore versus 3016 for the Core i3, a 457.2% delta. Single-core R20 follows with 2372 against 425, a 458.1% gap — the largest delta in the entire head-to-head set. The R23 results are similarly lopsided: 40014 multicore versus 7183, and 5649 single-core versus 1014, both at 457.1%. Every test lands within a 1% band of 457–458%, which indicates the performance ratio is nearly constant regardless of workload intensity or core count scaling.

Notably, the Core i3’s boost clock of 4.50 GHz is higher than the Xeon’s 3.50 GHz, yet single-core scores still favor the Xeon by over 450%. The Xeon’s Ice Lake architecture and 36 MB shared L3 cache compensate for its lower clock speed. The data shows no test where the Core i3 narrows the gap; its best relative showing is still a 457.1% deficit. The Xeon’s 6 wins and 0 losses in the head-to-head table are absolute, with no mixed or borderline results.

The average benchmark score reinforces this: the Xeon’s avgBenchmarkScore is 11574, while the Core i3’s is 11200. The delta between their averages is only 3.3%, which highlights how different benchmark suites weight workloads — the PassMark data for the Core i3 pulls its average up substantially, whereas the Xeon’s Cinebench-heavy profile keeps its average lower. Yet in direct Cinebench comparisons, the Xeon is faster by a factor of roughly 5.6.

Where Each One Wins

The Xeon Gold 6342 wins every single head-to-head benchmark recorded, covering Cinebench R15, R20, and R23 in both single- and multi-threaded modes. These are the only tests where both CPUs have comparable data. The Xeon’s 24 cores and 48 threads deliver 457.8% higher Cinebench R15 multicore scores, and its 36 MB shared L3 cache helps it maintain a 457.1% lead in single-core R23 despite a 1.00 GHz lower boost clock.

The Core i3-1305U wins in domains not included in the head-to-head table. Its PassMark data shows strengths in specific workloads: data compression scores 92767, floating point math 19687, and integer math 27925. The Core i3 also carries integrated UHD Graphics 64EU, while the Xeon has no integrated graphics listed. For mobile or low-power systems, the Core i3’s 15 W TDP versus the Xeon’s 230 W is a major practical advantage, though the FACT PACK provides no power efficiency benchmarks to quantify it.

The Core i3 also supports DDR4 and DDR5 memory, while the Xeon supports only DDR4. However, the Xeon’s eight-channel memory bus with 204.8 GB/s bandwidth massively exceeds the Core i3’s dual-channel setup, which has no bandwidth figure listed. The Core i3’s PCIe Gen 4 allocation is 8 lanes versus the Xeon’s 64 lanes. For workloads that fit in PassMark’s encryption or compression tests, the Core i3 shows respectable numbers — data encryption scores 5895 and extended instructions 5240 — but no comparable Xeon data exists for these tests, so no direct win can be claimed.

The Verdict

The data dictates a clear split. The Intel Xeon Gold 6342 is the choice for any server or workstation workload captured by Cinebench — rendering, simulation, or any multi-threaded compute that scales across cores. Its 40014 R23 multicore score is 457.1% higher than the Core i3’s 7183, and its single-core scores are equally dominant. The Xeon’s 67th percentile versus all CPUs and its nearest rivals — the AMD Ryzen 9 PRO 7945 (0.9% higher avg) and Intel Core i7-1185G7 (1.1% lower avg) — place it in a competitive mid-range server tier. The Core i3’s 66th percentile and rivals like the Xeon Gold 6336Y (0.1% delta) and AMD Ryzen 5 3500U (0.2% delta) show it sits in a completely different performance class despite similar percentile rankings.

The Core i3-1305U is the pick for mobile or low-power embedded systems where the 15 W TDP and integrated graphics are essential. Its PassMark single-thread score of 3115 indicates competent light-thread performance, and its data compression score of 92767 suggests it handles file-level tasks adequately. But for any Cinebench-type workload, the Xeon wins by over 450%. The Core i3’s launch MSRP is $309; the Xeon has no launch MSRP listed. Users needing eight-channel memory, 64 PCIe Gen 4 lanes, or ECC support must choose the Xeon — the Core i3 lacks ECC entirely. Users needing a compact BGA 1744 socket part with DDR5 support must choose the Core i3.

FAQ

Q: Which CPU has a higher Cinebench R23 multicore score?

A: The Intel Xeon Gold 6342 scores 40014, which is 457.1% higher than the Core i3-1305U’s 7183.

Q: Is there any benchmark where the Core i3-1305U beats the Xeon Gold 6342?

A: In the six head-to-head Cinebench tests, the Xeon wins all. The Core i3 has PassMark data (e.g., data compression 92767, integer math 27925) but no comparable Xeon results exist for those tests, so no head-to-head win can be credited.

Q: What is the memory bandwidth difference?

A: The Xeon Gold 6342 supports eight-channel DDR4 with 204.8 GB/s bandwidth. The Core i3-1305U supports dual-channel DDR4 or DDR5, with no bandwidth figure listed in the data.

Q: Do both CPUs support ECC memory?

A: No. The Xeon Gold 6342 has ECC memory support (true). The Core i3-1305U does not support ECC memory (false).

Q: How many PCIe lanes does each CPU provide?

A: The Xeon Gold 6342 provides 64 PCIe Gen 4 lanes (CPU only). The Core i3-1305U provides 8 PCIe Gen 4 lanes (CPU only).

Q: What are the release dates?

A: The Xeon Gold 6342 was released on 2021-04-05. The Core i3-1305U was released on 2023-01-03.

Architecture Differences

The two CPUs come from different Intel architectures and market segments. The Xeon Gold 6342 uses Ice Lake-SP (codename Ice Lake-SP) on a 10 nm process, while the Core i3-1305U uses Raptor Lake-U on the same 10 nm process. Both are fabricated by Intel, but the designs diverge sharply.

Core counts differ dramatically: the Xeon has 24 cores and 48 threads, the Core i3 has 5 cores and 6 threads. The Xeon’s base clock is 2.80 GHz with a 3.50 GHz boost; the Core i3’s base is 1600.00 MHz (1.60 GHz) with a 4.50 GHz boost. Cache hierarchies also differ: the Xeon has 64 KB L1 per core, 1 MB L2 per core, and 36 MB shared L3. The Core i3 has 80 KB L1 per core, 1.25 MB L2 per core, and 10 MB shared L3. Despite the Core i3’s larger per-core L1 and L2, the Xeon’s total L3 is 3.6 times larger.

Memory support splits along platform lines. The Xeon uses DDR4 with an eight-channel bus and 204.8 GB/s bandwidth, plus ECC. The Core i3 supports both DDR4 and DDR5 with a dual-channel bus, no ECC, and no bandwidth figure. PCIe connectivity also favors the Xeon: 64 Gen 4 lanes versus 8 Gen 4 lanes. The Xeon uses the Intel Socket 4189 platform; the Core i3 uses Intel BGA 1744. The Xeon has no integrated graphics, while the Core i3 includes UHD Graphics 64EU.

Power and thermal design are opposites. The Xeon’s TDP is 230 W; the Core i3’s is 15 W — a 215 W gap. The Xeon’s market segment is Server/Workstation, the Core i3’s is Mobile. The Xeon’s generation is listed as "Xeon Gold (Ice Lake-SP)", the Core i3’s as "Core i3 (Raptor Lake-U)". Neither CPU has an unlocked multiplier. The Core i3 has a part number (SRMLT); the Xeon does not. Both are marked as Active production status.