Intel Core 3 305 vs Intel Core Ultra 5 225F Comparison

Intel Core 3 305 vs Intel Core Ultra 5 225F: the data presents a clear separation between a mobile-focused, power-efficient part and a desktop-oriented processor with substantially higher performance ceilings. The Core 3 305, built on the Wildcat Lake architecture, and the Core Ultra 5 225F, from the Arrow Lake family, both use a 3 nm process, yet their design goals diverge sharply. The benchmark results show a complete sweep for the Core Ultra 5 225F across all 17 recorded tests, with margins ranging from a narrow single-core edge to a dominant multi-core advantage. The average benchmark score for the Core Ultra 5 225F is 37,313, while the Core 3 305 sits at 18,302, a difference that places them in different performance percentiles (85 vs 72). The following analysis examines the architectural underpinnings, the measured performance deltas, and the specification differences that explain this outcome.

FAQ

Q: What is the most significant performance gap between the two processors?

A: The largest recorded delta is in the PassMark find prime numbers test, where the Core Ultra 5 225F scores 352 against the Core 3 305's 115, a 67.3% advantage. This suggests a substantial difference in integer-heavy computational workloads.

Q: How do the processors compare in multi-threaded Cinebench tests?

A: In Cinebench R23 multi-core, the Core Ultra 5 225F scores 16,467 versus 13,123 for the Core 3 305, a 20.3% lead. The gap widens in older R20 and R15 multi-core tests, where the Core Ultra 5 225F leads by 50.2% and 50.3% respectively.

Q: Is the single-core performance difference as pronounced?

A: No, the single-core gap is much smaller. In Cinebench R23 single-core, the Core Ultra 5 225F scores 1,893 against 1,852 for the Core 3 305, only a 2.2% difference. PassMark single-thread shows a 9.6% lead for the Core Ultra 5 225F (4,397 vs 3,977).

Q: Which processor has a higher average benchmark score?

A: The Core Ultra 5 225F has an average benchmark score of 37,313, while the Core 3 305 averages 18,302. The Core Ultra 5 225F also ranks in the 85th percentile of all CPUs, compared to the 72nd percentile for the Core 3 305.

Q: What are the closest rivals to each processor according to the database?

A: The Core 3 305 sits within 0.4% of the AMD Ryzen 5 2600E, which scores 18,230, and within 0.1% of the Intel Core i3-14100, which scores 18,318. The Core Ultra 5 225F is 0.3% behind the Intel Core i9-13900HK (37,425) and 0.4% ahead of the AMD Ryzen 7 7735H (37,161).

Q: How do the processors differ in memory bandwidth?

A: The Core Ultra 5 225F has a dual-channel memory bus delivering 102.4 GB/s, while the Core 3 305 uses a single-channel bus with 59.7 GB/s. This represents a 71.5% higher theoretical bandwidth for the Core Ultra 5 225F.

Architecture Differences

The two processors stem from different architectural lineages. The Core 3 305 uses the Wildcat Lake codename with a "Core 3 (Wildcat Lake)" generation label, while the Core Ultra 5 225F is based on the Arrow Lake architecture with the "Ultra 5 (Arrow Lake)" generation. Both are fabricated on a 3 nm process, but the foundry differs: Intel produces the Core 3 305, while TSMC manufactures the Core Ultra 5 225F. The Core Ultra 5 225F has a transistor count of 17,800 million spread across a 243 mm² die, whereas the Core 3 305 does not have recorded transistor or die size data.

Core configuration diverges significantly. The Core 3 305 offers 6 cores and 6 threads, with no hyper-threading. The Core Ultra 5 225F provides 10 cores and 10 threads, also without hyper-threading. This 4-core difference directly explains the multi-threaded performance gaps. Cache hierarchies also differ: the Core 3 305 has 192 KB of L1 cache, 2.5 MB of L2 cache, and 6 MB of shared L3 cache. The Core Ultra 5 225F lists L1 as 192 KB per core, L2 as 3 MB per core, and a larger 20 MB shared L3 cache. The per-core L2 allocation in the Core Ultra 5 225F suggests a different cache organization optimized for higher bandwidth.

The Core 3 305 integrates Intel Xe3 Graphics with 1 Xe core, positioning it as a processor capable of handling display output without a discrete GPU. The Core Ultra 5 225F has no integrated graphics, indicated as "N/A," which is typical for desktop processors that assume a discrete graphics card. The Core 3 305 targets the mobile segment with an Intel BGA 1516 socket, while the Core Ultra 5 225F is a desktop part using Intel Socket 1851. PCIe support also differs: the Core 3 305 offers Gen 4 with 6 lanes (CPU only), while the Core Ultra 5 225F provides Gen 5 with 20 lanes (CPU only), a substantial expansion in both speed and lane count.

Head-to-Head Benchmarks

The recorded data shows the Core Ultra 5 225F winning all 17 head-to-head benchmarks, but the margins reveal distinct performance tiers. The most decisive wins come in multi-threaded and parallel workloads. In Cinebench R15 multi-core, the Core Ultra 5 225F scores 2,660 against 1,322 for the Core 3 305, a 50.3% advantage. Cinebench R20 multi-core shows 11,059 versus 5,511, also a 50.2% lead. These older Cinebench versions emphasize raw multi-core scaling, where the Core Ultra 5 225F's 10 cores dominate the Core 3 305's 6 cores.

PassMark tests amplify this pattern. Data compression shows 310,843 for the Core Ultra 5 225F versus 146,857 for the Core 3 305, a 52.8% delta. Data encryption scores 22,648 against 11,019, a 51.3% gap. Extended instructions result in 28,027 versus 13,543, a 51.7% difference. Floating point math delivers 92,554 versus 42,284, a 54.3% lead. Integer math shows 66,417 versus 32,295, a 51.4% gap. The PassMark multi-thread score is 31,004 against 15,439, a 50.2% advantage. Physics simulation scores 2,430 versus 1,233, a 49.3% difference.

The smaller deltas appear in single-threaded and lightly-threaded tests. Cinebench R23 multi-core shows a 20.3% lead for the Core Ultra 5 225F (16,467 vs 13,123), a narrower margin than older multi-core tests, suggesting the Core 3 305's architecture scales reasonably well in this workload. Cinebench R23 single-core shows only a 2.2% difference (1,893 vs 1,852), indicating comparable single-core efficiency. PassMark single-thread shows a 9.6% lead (4,397 vs 3,977). The prime number test, despite its name, falls into the larger-gap category with a 67.3% delta, likely due to its sensitivity to memory bandwidth and core count.

Specification Differences

The two processors differ across nearly every specification field. Clock speeds: the Core 3 305 has a base clock of 1.50 GHz and a boost clock of 4.30 GHz, while the Core Ultra 5 225F operates at 3.30 GHz base and 4.90 GHz boost. The higher boost clock on the Core Ultra 5 225F aligns with its single-core benchmark lead. Thermal design power: the Core 3 305 is rated at 15 W, suitable for mobile thermal envelopes, while the Core Ultra 5 225F draws 65 W, reflecting its desktop positioning with more headroom for sustained performance.

Memory support: the Core 3 305 accepts DDR5 and LPDDR5X, while the Core Ultra 5 225F supports DDR5 only. The memory bus differs as noted: single-channel for the Core 3 305 versus dual-channel for the Core Ultra 5 225F. Memory bandwidth figures are 59.7 GB/s and 102.4 GB/s respectively. Neither processor supports ECC memory. The Core 3 305 has a launch MSRP of $309, while the Core Ultra 5 225F has a launch MSRP of $231. Both processors have locked multipliers, indicated by multiplierUnlocked set to false. The part numbers differ: SAE3L for the Core 3 305 and SRQD2SRVF9 for the Core Ultra 5 225F.

Release dates show the Core Ultra 5 225F launched earlier on 2025-01-06, while the Core 3 305 arrived later on 2026-04-15. Both are listed as "Active" in production status. The market segment field confirms their intended use: mobile for the Core 3 305, desktop for the Core Ultra 5 225F.

The Verdict

The benchmark data indicates that the Intel Core Ultra 5 225F is the superior processor in every measured test. Its average benchmark score of 37,313 more than doubles the Core 3 305's 18,302. The Core Ultra 5 225F also achieves a higher percentile rank (85 vs 72), placing it in a stronger position among all CPUs in the database. The performance deltas range from a modest 2.2% in Cinebench R23 single-core to a dominant 67.3% in PassMark find prime numbers. The Core Ultra 5 225F's nearest rivals include the Intel Core i9-13900HK and AMD Ryzen 7 7735H, both scoring within 0.4%, which positions it among higher-tier mobile and desktop processors.

The Core 3 305, by contrast, sits near the Intel Core i3-14100 and AMD Ryzen 5 2600E, with deltas of -0.1% and 0.4% respectively. This places it in a more modest performance tier. The Core 3 305's single-core performance remains competitive, evidenced by the 2.2% gap in Cinebench R23 single-core, but its multi-core and memory bandwidth limitations create large gaps in parallel workloads. The Core 3 305's integrated graphics and lower 15 W TDP make it suitable for mobile systems, while the Core Ultra 5 225F's 65 W TDP and lack of integrated graphics target desktop builds with discrete GPUs.

Where Each One Wins

The Core Ultra 5 225F wins in all recorded benchmark categories, but the degree of victory varies by workload type. It shows the largest advantages in memory-intensive and multi-threaded tasks: data compression (52.8% lead), data encryption (51.3%), extended instructions (51.7%), floating point math (54.3%), integer math (51.4%), and multi-thread scores (50.2%). These workloads benefit from the dual-channel memory bus and higher bandwidth (102.4 GB/s vs 59.7 GB/s). The Core Ultra 5 225F also leads in physics simulation by 49.3% and random string sorting by 52.8%, reinforcing its strength in parallel computation.

The Core 3 305, despite losing all benchmarks, shows its closest results in single-threaded tests. Cinebench R23 single-core shows only a 2.2% deficit, and PassMark single-thread shows a 9.6% gap. This indicates that for lightly-threaded applications, the Core 3 305's architecture is nearly comparable in per-core efficiency. The Core 3 305's integrated graphics and lower TDP make it the only option among the two for systems requiring on-chip display output, and its mobile socket (BGA 1516) suits compact, power-constrained designs. The Core Ultra 5 225F, with its Gen 5 PCIe support and 20 lanes, offers superior expansion for high-bandwidth peripherals, while the Core 3 305's Gen 4 with 6 lanes limits connectivity. For users prioritizing raw performance, the Core Ultra 5 225F is the clear choice; for mobile applications requiring integrated graphics and low power, the Core 3 305 has a defined role.