Intel Core 5 221E vs Intel Core Ultra 3 205 Comparison

The Intel Core 5 221E and Intel Core Ultra 3 205 are two desktop processors from Intel that target different performance profiles. The 221E is a 14-core, 20-thread part based on the Bartlett Lake architecture, while the 205 is an 8-core, 8-thread part from the Arrow Lake-S family. The recorded data shows a clear split: the 221E dominates in multi-threaded and most integer workloads, while the 205 shows advantages in specific single-thread and specialized instruction tests. This analysis breaks down where each processor wins, the architectural differences that explain those results, and the head-to-head benchmark data.

Where Each One Wins

The Intel Core 5 221E wins 13 of the 17 recorded head-to-head benchmarks. Its strengths are concentrated in heavily multi-threaded workloads and general-purpose integer tasks. The 221E leads in every Cinebench test, including R15, R20, and R23, both in multi-core and single-core runs. It also wins in PassMark integer math by a staggering 115.2% margin, data compression by 24.4%, random string sorting by 21.2%, and multithread by 16.6%. This processor is the clear choice for rendering, video encoding, and any application that scales with core count and thread count.

The Intel Core Ultra 3 205 wins only 4 of the 17 benchmarks, but its victories are notable. It takes PassMark single-thread by 9.4%, extended instructions by 19.3%, and find prime numbers by 35.4%. These wins point to a processor with higher per-core efficiency, likely due to its newer manufacturing process and more advanced microarchitecture. The 205 also has a higher base clock of 3.80 GHz compared to 2.70 GHz on the 221E, which helps in lightly threaded tasks that do not boost for long periods.

The data indicates a workload-dependent split. The 221E is the workhorse for content creation and multi-tasking, while the 205 excels in tasks that rely on single-thread performance or specialized instruction sets. The 205 also edges out the 221E in data encryption, but the margin is slim at 2.3%, so that is not a decisive advantage.

Architecture Differences

The two processors use fundamentally different designs. The Intel Core 5 221E is built on a 10 nm process at Intel, with a die size of 257 mm². The Intel Core Ultra 3 205 uses a 3 nm process at TSMC, with a smaller die size of 243 mm² and 17,800 million transistors. The smaller process node gives the 205 a potential efficiency advantage, which is reflected in its lower TDP of 57 watts versus 65 watts for the 221E.

Core and thread counts differ sharply. The 221E has 14 cores and 20 threads, suggesting a hybrid arrangement with performance and efficiency cores. The 205 has 8 cores and 8 threads, indicating no hyper-threading and a more uniform core design. The cache hierarchy also differs. The 221E has 80 KB of L1 per core, 2 MB of L2 per core, and 24 MB of shared L3. The 205 has larger per-core caches: 192 KB of L1 per core and 3 MB of L2 per core, but a smaller 15 MB of shared L3.

Memory support is another differentiator. The 221E supports both DDR4 and DDR5, while the 205 supports only DDR5. The 205 has a higher memory bandwidth of 102.4 GB/s versus 89.6 GB/s for the 221E. The 221E supports ECC memory, which the 205 does not. PCIe lane counts also differ: the 221E provides Gen 5 with 16 lanes from the CPU, while the 205 provides Gen 5 with 20 lanes. The integrated graphics are different as well, with the 221E using UHD Graphics 730 and the 205 using Arc Xe-LPG Graphics 16EU.

The socket and release timing separate the two as well. The 221E uses Intel Socket 1700 and launched on 2025-01-12, while the 205 uses Intel Socket 1851 and launched on 2025-07-31. The launch MSRP for the 221E is $232, and for the 205 it is $140. Neither processor has an unlocked multiplier, so overclocking is not officially supported for either.

Head-to-Head Benchmarks

The Cinebench results show a consistent pattern. In Cinebench R15 multi-core, the 221E scores 2613 against 2001 for the 205, a 30.6% lead. The single-core R15 test shows a similar 30.5% advantage, with scores of 368 versus 282. R20 multi-core gives the 221E a 30.6% lead (10891 versus 8339), and R20 single-core matches that 30.6% margin (1537 versus 1177). R23 multi-core continues the trend: 25933 versus 19856, a 30.6% gap, and R23 single-core is also 30.6% (3661 versus 2803). The consistency of this 30.6% delta across all Cinebench generations indicates a stable performance differential that is not workload-sensitive within this suite.

PassMark results reveal more nuance. Integer math is the largest win for the 221E, with a score of 117813 versus 54755, a 115.2% advantage. This result is likely driven by the 221E's higher core count and thread count. Data compression shows a 24.4% lead (324285 versus 260651), and random string sorting shows a 21.2% lead (37686 versus 31083). The multithread test gives the 221E a 16.6% edge (30510 versus 26167), and floating point math is closer at 5.2% (79028 versus 75136). Physics also favors the 221E by 10.6% (2230 versus 2016).

The 205 fights back in specialized tests. Find prime numbers shows the 205 at 268 versus 173 for the 221E, a 35.4% advantage. Extended instructions give the 205 a 19.3% lead (22578 versus 18216). Single-thread performance also favors the 205, with a score of 4575 versus 4147, a 9.4% advantage. Data encryption is nearly a tie, with the 221E at 19205 and the 205 at 18772, a 2.3% difference.

Overall average benchmark scores place the 221E at 40144, which is in the 87th percentile of all CPUs. The 205 averages 31473, in the 82nd percentile. The nearest rival to the 221E is the AMD Ryzen 7 7700, which scores 40081 with a 0.2% delta, and the AMD Ryzen 9 270 at 40246 with a -0.3% delta. The 205's nearest rival is the Intel Core 7 240H at 31483 with a 0% delta, showing that the 205 sits in a different performance tier entirely.

The Verdict

The data paints a clear picture. The Intel Core 5 221E is the stronger processor for multi-threaded workloads, offering a 30.6% advantage across all Cinebench tests and a massive 115.2% lead in integer math. Its higher core and thread counts, larger L3 cache, and ECC memory support make it suitable for heavy rendering, compilation, and server-like desktop tasks. The 221E also holds a 87th percentile rank among all CPUs, compared to 82nd for the 205.

The Intel Core Ultra 3 205 is better for single-thread-sensitive tasks and specialized instruction workloads. Its 9.4% lead in PassMark single-thread and 35.4% lead in find prime numbers show that its newer 3 nm process and larger per-core caches translate to higher per-core throughput. The 205 also uses less power at 57 watts TDP and offers more PCIe lanes at 20 versus 16.

For a user prioritizing raw multi-core performance, the 221E is the choice. For a user prioritizing single-thread speed, instruction-set efficiency, or lower power consumption, the 205 has clear advantages. The two processors do not compete for the same use case, and the benchmark data supports that distinction.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core 5 221E has 14 cores and 20 threads, while the Intel Core Ultra 3 205 has 8 cores and 8 threads.

Q: Which processor is faster in Cinebench R23 multi-core?

A: The Intel Core 5 221E scores 25933, which is 30.6% higher than the Intel Core Ultra 3 205's score of 19856.

Q: Does the Intel Core Ultra 3 205 win any benchmark?

A: Yes, it wins PassMark single-thread by 9.4% (4575 versus 4147), extended instructions by 19.3% (22578 versus 18216), and find prime numbers by 35.4% (268 versus 173).

Q: Which processor supports ECC memory?

A: The Intel Core 5 221E supports ECC memory, while the Intel Core Ultra 3 205 does not.

Q: What is the process node difference?

A: The Intel Core 5 221E uses a 10 nm process at Intel, while the Intel Core Ultra 3 205 uses a 3 nm process at TSMC.

Q: Which processor has higher memory bandwidth?

A: The Intel Core Ultra 3 205 has a memory bandwidth of 102.4 GB/s, compared to 89.6 GB/s for the Intel Core 5 221E.

Specification Differences

| Specification | Intel Core 5 221E | Intel Core Ultra 3 205 |

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

| Cores | 14 | 8 |

| Threads | 20 | 8 |

| Base Clock | 2.70 GHz | 3.80 GHz |

| Boost Clock | 5.20 GHz | 4.90 GHz |

| TDP | 65 W | 57 W |

| Socket | Intel Socket 1700 | Intel Socket 1851 |

| Codename | Bartlett Lake | Arrow Lake-S |

| Process Node | 10 nm | 3 nm |

| Foundry | Intel | TSMC |

| Transistors | Not specified | 17,800 million |

| Die Size | 257 mm² | 243 mm² |

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

| L2 Cache | 2 MB (per core) | 3 MB (per core) |

| L3 Cache | 24 MB (shared) | 15 MB (shared) |

| Memory Support | DDR4, DDR5 | DDR5 |

| Memory Bandwidth | 89.6 GB/s | 102.4 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 5, 16 Lanes (CPU only) | Gen 5, 20 Lanes (CPU only) |

| Integrated Graphics | UHD Graphics 730 | Arc Xe-LPG Graphics 16EU |

| Launch MSRP | $232 | $140 |

| Release Date | 2025-01-12 | 2025-07-31 |