Intel Core 5 221E vs Intel Processor U303L Comparison

FAQ

Q: How does the Intel Core 5 221E compare to the Intel Processor U303L in core and thread counts?

A: The Intel Core 5 221E has 14 cores and 20 threads, while the Intel Processor U303L has 5 cores and 6 threads. That is a difference of 9 cores and 14 threads in favor of the Core 5 221E.

Q: What are the clock speed differences between the two processors?

A: The Core 5 221E has a base clock of 2.70 GHz and a boost clock of 5.20 GHz. The U303L has a base clock of 1.20 GHz and a boost clock of 2.60 GHz. The Core 5 221E operates at significantly higher frequencies in both states.

Q: Which processor has a higher cache capacity?

A: The Core 5 221E features 24 MB of shared L3 cache, while the U303L has 12 MB of shared L3 cache. Additionally, the Core 5 221E has 2 MB of L2 cache per core versus 1.25 MB per core on the U303L.

Q: How do their power envelopes compare?

A: The Core 5 221E has a TDP of 65 watts, while the U303L has a TDP of 15 watts. The U303L is rated for substantially lower power consumption.

Q: What are the market segments for these processors?

A: The Core 5 221E is classified as a desktop processor, while the U303L is classified as a mobile processor. Both use Intel Socket 1700.

Q: What is the difference in their benchmark percentiles?

A: The Core 5 221E sits at the 87th percentile among all CPUs, while the U303L sits at the 50th percentile. The Core 5 221E has an average benchmark score of 40144, whereas the U303L has no recorded benchmark scores in the database.

Architecture Differences

The Intel Core 5 221E and Intel Processor U303L diverge substantially in their underlying configurations. The Core 5 221E is built on the Bartlett Lake codename and belongs to the Core 5 generation, while the U303L is based on Raptor Lake architecture with the Raptor Lake-PS codename. Both processors are manufactured on a 10 nm process node at Intel's foundry, but their design goals differ markedly.

The Core 5 221E provides 14 cores and 20 threads, a configuration suited for desktop workloads with high parallelism. Its base clock of 2.70 GHz and boost clock of 5.20 GHz represent a high-frequency design. The U303L, by contrast, offers 5 cores and 6 threads, with a base clock of 1.20 GHz and a boost clock of 2.60 GHz. This lower-frequency, lower-core-count design targets mobile efficiency.

Cache hierarchies also differ. The Core 5 221E carries 80 KB of L1 cache per core, 2 MB of L2 cache per core, and 24 MB of shared L3 cache. The U303L also has 80 KB of L1 cache per core but only 1.25 MB of L2 cache per core and 12 MB of shared L3 cache. The die size for the Core 5 221E is 257 mm², while no die size is recorded for the U303L.

Memory support is shared: both support DDR4 and DDR5 with dual-channel memory buses. However, the Core 5 221E has a recorded memory bandwidth of 89.6 GB/s, while the U303L has no bandwidth figure in the database. ECC memory support is present on the Core 5 221E but absent on the U303L.

PCIe capabilities differ significantly. The Core 5 221E supports PCIe Gen 5 with 16 lanes (CPU only), while the U303L supports PCIe Gen 4 with 8 lanes (CPU only). Integrated graphics differ as well: the Core 5 221E uses UHD Graphics 730, whereas the U303L uses UHD Graphics 96EU.

The release dates place the U303L earlier, with a release date of April 2024, while the Core 5 221E appeared in January 2025. Both processors are listed as Active in production status, and neither has an unlocked multiplier.

Head-to-Head Benchmarks

The recorded benchmark data covers the Intel Core 5 221E extensively, while the Intel Processor U303L has no benchmark scores in the database. This asymmetry means a direct head-to-head comparison must rely on the Core 5 221E's absolute scores and its position relative to other CPUs.

The Core 5 221E delivers strong multi-threaded performance. In Cinebench R23 multi-core, it scores 25933, and in Cinebench R20 multi-core, it scores 10891. The Cinebench R15 multi-core result is 2613. Single-core results are also solid: Cinebench R23 single-core at 3661, Cinebench R20 single-core at 1537, and Cinebench R15 single-core at 368.

PassMark results confirm the pattern. The Core 5 221E achieves a multi-thread score of 30510, a single-thread score of 4147, and an integer math score of 117813. Floating-point math comes in at 79028, while extended instructions score 18216. Data encryption reaches 19205, and data compression hits 324285. Random string sorting scores 37686, and physics processing scores 2230. Prime number finding is the lowest result at 173.

The average benchmark score for the Core 5 221E is 40144, placing it at the 87th percentile of all CPUs. Its nearest rivals in the database are all AMD and Intel parts with similar average scores. The AMD Ryzen 7 7700 scores 40081, a delta of 0.2 percent relative to the Core 5 221E. The AMD Ryzen AI 9 365 scores 40048, also a delta of 0.2 percent. The AMD Ryzen 9 270 scores 40246, which is 0.3 percent higher than the Core 5 221E, making it the only rival ahead in this group. The Intel Core i9-13905H scores 40313, a 0.4 percent advantage.

These delta values indicate that the Core 5 221E performs within a narrow band of its closest competitors. A 0.2 percent gap to the Ryzen 7 7700 and Ryzen AI 9 365 is effectively a tie in average score. The 0.3 and 0.4 percent deficits to the Ryzen 9 270 and Core i9-13905H are similarly marginal, meaning the Core 5 221E sits comfortably in the same performance tier as these parts.

For the U303L, no benchmark scores exist in the database, and no nearest rivals are recorded. Its 50th percentile ranking indicates a mid-pack position among all CPUs, but without measured results, no quantitative comparison to the Core 5 221E is possible from the data.

The Verdict

The benchmark data clearly favors the Intel Core 5 221E in every measurable dimension. Its 14 cores and 20 threads provide a substantial parallel processing advantage over the U303L's 5 cores and 6 threads. The Core 5 221E's boost clock of 5.20 GHz is double the U303L's 2.60 GHz, and its base clock of 2.70 GHz exceeds the U303L's boost clock. Cache capacity is also doubled in the L3 tier, with 24 MB versus 12 MB.

The Core 5 221E's 87th percentile ranking and average benchmark score of 40144 place it among high-performing desktop CPUs, closely matched with the AMD Ryzen 7 7700, Ryzen AI 9 365, Ryzen 9 270, and Intel Core i9-13905H. The U303L's 50th percentile with no recorded benchmark scores means the database contains no evidence of competitive performance for that part.

The U303L does hold advantages in power consumption, with a 15-watt TDP versus 65 watts for the Core 5 221E, and it targets the mobile segment with a lower-power design. Its PCIe Gen 4 interface with 8 lanes is more modest than the Core 5 221E's PCIe Gen 5 with 16 lanes. The U303L also lacks ECC memory support, which the Core 5 221E includes.

For desktop workloads requiring high multi-threaded throughput, the Core 5 221E is the clear choice based on the data. Its benchmark scores, core count, clock speeds, and cache capacity all point to superior performance. For mobile or low-power applications, the U303L's 15-watt TDP and mobile market segment make it the appropriate selection, though no performance measurements exist to validate its capabilities.

Specification Differences

| Specification | Intel Core 5 221E | Intel Processor U303L |

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

| Cores | 14 | 5 |

| Threads | 20 | 6 |

| Base Clock | 2.70 GHz | 1.20 GHz |

| Boost Clock | 5.20 GHz | 2.60 GHz |

| TDP | 65 W | 15 W |

| Codename | Bartlett Lake | Raptor Lake-PS |

| Architecture | Not listed | Raptor Lake |

| Generation | Core 5 (Bartlett Lake) | Intel Processor (Raptor Lake) |

| Die Size | 257 mm² | Not listed |

| L2 Cache | 2 MB (per core) | 1.25 MB (per core) |

| L3 Cache | 24 MB (shared) | 12 MB (shared) |

| Memory Bandwidth | 89.6 GB/s | Not listed |

| ECC Memory | Yes | No |

| PCIe | Gen 5, 16 Lanes (CPU only) | Gen 4, 8 Lanes (CPU only) |

| Integrated Graphics | UHD Graphics 730 | UHD Graphics 96EU |

| Market Segment | Desktop | Mobile |

| Release Date | January 2025 | April 2024 |

| Launch MSRP | $232 | $285 |

Both processors share Intel Socket 1700, a 10 nm process node at Intel's foundry, DDR4 and DDR5 memory support, dual-channel memory buses, 80 KB of L1 cache per core, and locked multipliers. The Core 5 221E has a higher transistor budget implied by its larger die size and cache configuration, while the U303L prioritizes lower power draw for mobile use.