Intel Core 3 305 vs Intel Core 7 253PE Comparison

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core 7 253PE has 10 cores and 20 threads, while the Intel Core 3 305 has 6 cores and 6 threads.

Q: What are the boost clock speeds of the two processors?

A: The Intel Core 7 253PE boosts up to 5.50 GHz, while the Intel Core 3 305 boosts up to 4.30 GHz.

Q: Which chip supports ECC memory?

A: The Intel Core 7 253PE supports ECC memory. The Intel Core 3 305 does not.

Q: How much L3 cache does each processor have?

A: The Intel Core 7 253PE has 33 MB of shared L3 cache. The Intel Core 3 305 has 6 MB of shared L3 cache.

Q: Which processor uses a newer fabrication process?

A: The Intel Core 3 305 uses a 3 nm process, whereas the Intel Core 7 253PE uses a 10 nm process.

Q: What is the memory bandwidth difference?

A: The Intel Core 7 253PE delivers 89.6 GB/s over a dual-channel memory bus. The Intel Core 3 305 delivers 59.7 GB/s over a single-channel bus.

Architecture Differences

The two processors come from different Intel design families. The Intel Core 3 305 uses the Wildcat Lake architecture and is built on a 3 nm process. The Intel Core 7 253PE uses the Bartlett Lake architecture and is built on a 10 nm process. Both are produced by Intel, but the process gap indicates a significant difference in transistor density and power characteristics.

The core configurations diverge sharply. The Core 3 305 has 6 cores and 6 threads, meaning no simultaneous multithreading. The Core 7 253PE has 10 cores and 20 threads, meaning each core supports two threads. This explains the large multicore performance gap in the benchmark data. The Core 3 305 has a 1.50 GHz base clock and a 4.30 GHz boost clock. The Core 7 253PE starts at 2.50 GHz and boosts to 5.50 GHz.

Cache layouts also differ fundamentally. The Core 3 305 has 192 KB of L1 cache and 2.5 MB of L2 cache. The Core 7 253PE lists L1 cache as 80 KB per core and L2 cache as 2 MB per core. The L3 cache difference is substantial: 6 MB shared on the Core 3 305 versus 33 MB shared on the Core 7 253PE. The Core 7 253PE benefits from a much larger pool of shared cache for workloads that reuse data across cores.

Memory support separates the two as well. The Core 3 305 supports DDR5 and LPDDR5X memory over a single-channel bus. The Core 7 253PE supports DDR4 and DDR5 over a dual-channel bus. The Core 7 253PE also has ECC memory support, which the Core 3 305 lacks. Memory bandwidth reflects this: 59.7 GB/s for the Core 3 305 versus 89.6 GB/s for the Core 7 253PE.

PCIe connectivity differs by generation and lane count. The Core 3 305 provides Gen 4 with 6 CPU-only lanes. The Core 7 253PE provides Gen 5 with 16 CPU-only lanes. The integrated graphics also differ: the Core 3 305 uses Intel Xe3 Graphics with 1 Xe core, while the Core 7 253PE uses UHD Graphics 730.

The market segments differ. The Core 3 305 targets mobile with a 15 W TDP and uses the Intel BGA 1516 socket. The Core 7 253PE targets desktop with a 65 W TDP and uses Intel Socket 1700. Both are locked processors with no unlocked multiplier.

Head-to-Head Benchmarks

The benchmark results show a consistent pattern: the Intel Core 7 253PE wins 15 of the 17 recorded comparisons, and the Intel Core 3 305 wins only the two single-thread PassMark tests.

Cinebench results are heavily in favor of the Core 7 253PE. In Cinebench R23 multicore, the Core 7 253PE scores 24880 against 13123 for the Core 3 305, a 47.3% advantage. The same 47.3% delta appears in Cinebench R20 multicore (10449 versus 5511) and Cinebench R15 multicore (2507 versus 1322). Single-core Cinebench results follow the same trend: R23 single-core has the Core 7 253PE at 3512 versus 1852, a 47.3% lead. R20 single-core shows 1475 versus 777, and R15 single-core shows 354 versus 186, both also at 47.3% deltas.

PassMark integer math produces the largest performance gap in the dataset. The Core 7 253PE scores 114158, while the Core 3 305 scores 32295. That is a 71.7% difference, the widest margin recorded in any test. Floating point math also favors the Core 7 253PE heavily: 80870 versus 42284, a 47.7% delta. Data compression shows a 56.7% gap, with the Core 7 253PE at 339133 and the Core 3 305 at 146857.

The Core 7 253PE leads in data encryption with 18385 versus 11019, a 40.1% delta. Extended instructions show 21806 versus 13543, a 37.9% advantage. Random string sorting favors the Core 7 253PE at 32777 versus 17623, a 46.2% delta. Physics tests show 1845 versus 1233, a 33.2% advantage. Prime number finding shows a smaller gap: 138 versus 115, a 16.7% delta.

The single exception is PassMark single-thread testing. The Core 3 305 scores 3977, and the Core 7 253PE scores 3955. The Core 3 305 wins by 0.6%. This result appears in both the PassMark single-thread and singlethread entries, which record identical scores. The Core 3 305, despite its lower boost clock, edges out the Core 7 253PE in this specific workload.

Average benchmark scores reflect the overall gap. The Core 7 253PE has an average benchmark score of 40557 and sits in the 87th percentile of all CPUs. The Core 3 305 has an average benchmark score of 18302 and sits in the 72nd percentile. The nearest rivals for the Core 7 253PE include the Intel Core 5 223PE at 40585 (0.1% higher), the Intel Core Ultra X7 368H at 40518 (0.1% lower), and the AMD Ryzen 9 7940H at 40431 (0.3% lower). The nearest rivals for the Core 3 305 include the Intel Core i3-14100 at 18318 (0.1% higher), the Intel Core 5 330 at 18345 (0.2% higher), and the AMD Ryzen 5 2600E at 18230 (0.4% lower).

Specification Differences

| Specification | Intel Core 3 305 | Intel Core 7 253PE |

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

| Cores | 6 | 10 |

| Threads | 6 | 20 |

| Base clock | 1.50 GHz | 2.50 GHz |

| Boost clock | 4.30 GHz | 5.50 GHz |

| TDP | 15 W | 65 W |

| Socket | Intel BGA 1516 | Intel Socket 1700 |

| Codename | Wildcat Lake | Bartlett Lake |

| Process node | 3 nm | 10 nm |

| L1 cache | 192 KB | 80 KB (per core) |

| L2 cache | 2.5 MB | 2 MB (per core) |

| L3 cache | 6 MB (shared) | 33 MB (shared) |

| Memory support | DDR5, LPDDR5X | DDR4, DDR5 |

| Memory bus | Single-channel | Dual-channel |

| Memory bandwidth | 59.7 GB/s | 89.6 GB/s |

| ECC memory | No | Yes |

| PCIe | Gen 4, 6 Lanes (CPU only) | Gen 5, 16 Lanes (CPU only) |

| Integrated graphics | Intel Xe3 Graphics (1 Xe) | UHD Graphics 730 |

| Market segment | Mobile | Desktop |

| Launch date | 2026-04-15 | 2026-03-08 |

| Launch MSRP | $309 | $384 |

The Core 3 305 uses a 3 nm process, while the Core 7 253PE uses a 10 nm process. The Core 3 305 is a single-channel mobile chip with a 15 W TDP, and the Core 7 253PE is a dual-channel desktop chip with a 65 W TDP. The Core 7 253PE supports ECC memory, DDR4, and DDR5, while the Core 3 305 only supports DDR5 and LPDDR5X. The PCIe capabilities differ by generation and lane count. The launch dates are roughly a month apart, with the Core 7 253PE releasing on 2026-03-08 and the Core 3 305 on 2026-04-15.

The Verdict

The data presents a clear hierarchy. The Intel Core 7 253PE dominates the Intel Core 3 305 in almost every recorded benchmark. The 10-core, 20-thread configuration with a 5.50 GHz boost clock produces a 47.3% lead across all Cinebench tests and a 71.7% lead in PassMark integer math. The Core 7 253PE also sits in the 87th percentile of all CPUs, compared to the 72nd percentile for the Core 3 305. The average benchmark score of 40557 versus 18302 shows a processor that is more than twice as fast on average.

The Core 3 305 has one meaningful advantage: single-thread PassMark performance. Its score of 3977 edges out the Core 7 253PE's 3955 by 0.6%. The 3 nm process and the Wildcat Lake architecture deliver a slightly faster single-thread result despite the lower 4.30 GHz boost clock. This advantage is narrow, and it does not carry over to Cinebench single-core tests, where the Core 7 253PE leads by 47.3%.

For desktop workloads that benefit from high core counts, large shared cache, and dual-channel memory bandwidth, the Core 7 253PE is the stronger choice. The 33 MB L3 cache, dual-channel 89.6 GB/s memory path, and 20 threads give it a decisive edge in multi-threaded rendering, compression, encryption, and math workloads. The ECC memory support also makes it suitable for error-sensitive computing environments.

For mobile systems where power consumption matters, the Core 3 305 has a clear role. Its 15 W TDP versus 65 W TDP makes it appropriate for battery-powered devices. The single-channel memory bus and 6 MB L3 cache limit its throughput, but the single-thread PassMark result shows it can match or slightly exceed the Core 7 253PE in lightly threaded tasks. The 3 nm process likely contributes to this efficiency, though the database does not record direct power efficiency measurements.

The nearest rival data confirms the positioning. The Core 7 253PE trades within 0.3% of the AMD Ryzen 9 7940H and sits just below the Intel Core 5 223PE. The Core 3 305 trades within 0.4% of the AMD Ryzen 5 2600E and sits just below the Intel Core i3-14100. Both chips sit close to their respective peer groups, but those peer groups occupy different performance tiers entirely.

The verdict from the data is straightforward. The Core 7 253PE is the higher-performance processor by a wide margin, with a 122% higher average benchmark score and wins in 15 of 17 head-to-head tests. The Core 3 305 is the lower-power, newer-process option with a single-thread PassMark edge of 0.6%, but it trails in every Cinebench test and every multi-threaded PassMark workload. Buyers seeking maximum compute throughput from these two options should choose the Core 7 253PE. Buyers constrained by mobile power limits should choose the Core 3 305, accepting the substantial multicore deficit.