Intel Core 5 221TE vs Intel Core Ultra 7 366H Comparison

The Intel Core 5 221TE and Intel Core Ultra 7 366H occupy different tiers of the Intel lineup, and the benchmark data confirms a substantial performance gap between them. The Core Ultra 7 366H wins every single head-to-head test recorded in the database, with a total of 17 wins out of 17 benchmarks. No test in the comparison favors the Core 5 221TE. This asymmetry defines the analysis.

The Verdict

The data indicates that the Intel Core Ultra 7 366H is the superior processor in every measured workload. Its average benchmark score of 41263 places it in the 87th percentile of all CPUs, while the Intel Core 5 221TE averages 17860, which is the 71st percentile. The Core Ultra 7 366H is 131% faster than the Core 5 221TE in average score, a difference that is consistent across single-threaded, multi-threaded, and specialized instruction tests.

The Core 5 221TE is a desktop processor with a 45 W TDP, while the Core Ultra 7 366H is a mobile processor with a 25 W TDP. This makes the performance gap even more notable, as the mobile chip achieves far higher scores while using less power, according to the recorded TDP values. The Core 5 221TE does offer ECC memory support and a larger L3 cache (24 MB shared versus 18 MB shared), but these features do not translate into benchmark wins.

For a system builder prioritizing raw performance, the Core Ultra 7 366H is the clear choice. For a desktop build requiring ECC memory support or a specific socket type, the Core 5 221TE becomes relevant. The Core 5 221TE uses Intel Socket 1700, while the Core Ultra 7 366H uses Intel BGA 2540, so the motherboard platform is a primary differentiator, not just performance.

Architecture Differences

The two processors come from different architectural families. The Core 5 221TE is built on the Bartlett Lake codename, produced on Intel's 10 nm process node. The Core Ultra 7 366H is based on the Panther Lake architecture, codename Panther Lake, and is manufactured on a 3 nm process node. This process difference is a major factor in the performance and efficiency gap.

The Core 5 221TE has 10 cores and 16 threads. The Core Ultra 7 366H has 16 cores and 16 threads. The thread count is identical, but the core count is higher on the Ultra 7. This means the Ultra 7 uses a different core configuration, likely with a mix of performance and efficiency cores, though the database does not specify the exact breakdown. The Core 5 221TE's cache hierarchy is smaller per core: 80 KB of L1 per core, 1.25 MB of L2 per core, and 24 MB of shared L3. The Core Ultra 7 366H has 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3. The Ultra 7 has more cache per core, which helps with single-threaded workloads, but the Core 5 221TE has more total L3.

Memory support also differs. The Core 5 221TE supports DDR4 and DDR5 memory with dual-channel operation and a memory bandwidth of 76.8 GB/s. The Core Ultra 7 366H supports DDR5 and LPDDR5X, also dual-channel, with a higher memory bandwidth of 115.2 GB/s. The Ultra 7's faster memory interface contributes to its higher scores in memory-sensitive benchmarks like data compression and random string sorting.

The integrated graphics are different as well. The Core 5 221TE uses UHD Graphics 730, while the Core Ultra 7 366H uses Intel Xe3 Graphics. The database does not provide graphics benchmark scores, so this comparison is limited to the fact of their existence.

PCIe support: the Core 5 221TE provides Gen 5 with 16 lanes (CPU only), while the Core Ultra 7 366H provides Gen 5 with 12 lanes (CPU only). The Core 5 has more PCIe lanes, which may matter for desktop expansion cards.

The Core 5 221TE supports ECC memory, a feature absent on the Core Ultra 7 366H. This is a key architectural difference for workstation or server applications where data integrity is critical.

Where Each One Wins

The Core Ultra 7 366H wins every single benchmark in the database. There is no workload category where the Core 5 221TE comes out ahead. The closest margin is in PassMark integer math, where the Core Ultra 7 366H leads by 49.5%. The largest margin is in PassMark find prime numbers, where the Core Ultra 7 366H is 81.9% ahead.

For single-threaded performance, the Core Ultra 7 366H dominates. In Cinebench R23 single-core, it scores 4020 versus 1596 for the Core 5 221TE, a 60.3% advantage. This indicates much higher IPC and clock efficiency, despite the Core 5's higher boost clock of 5.00 GHz versus 4.80 GHz for the Ultra 7. The base clocks are 1.80 GHz for the Core 5 and 2.00 GHz for the Ultra 7.

For multi-threaded workloads, the Core Ultra 7 366H also wins decisively. In Cinebench R23 multi-core, it scores 28477 versus 11305 for the Core 5 221TE, again a 60.3% gap. The Ultra 7 has more cores, but the similar thread count means the advantage comes from core count and per-core efficiency.

In specialized workloads, the Ultra 7's lead is even more pronounced. PassMark data encryption shows a 65.3% advantage for the Ultra 7 (25845 versus 8963). Extended instructions show a 64.1% advantage (26901 versus 9655). Floating point math shows a 69.4% advantage (103615 versus 31661). Physics simulation shows a 66.1% advantage (2880 versus 977).

The only area where the Core 5 221TE could be considered preferable is in its platform features. It is a desktop chip with a replaceable socket (Intel Socket 1700), ECC support, and more PCIe lanes (16 versus 12). But in terms of benchmark results, the Core Ultra 7 366H wins everywhere.

FAQ

Q: Which processor has the higher average benchmark score?

A: The Intel Core Ultra 7 366H has an average benchmark score of 41263, which is significantly higher than the Intel Core 5 221TE's average of 17860. The Ultra 7 also sits in the 87th percentile of all CPUs, compared to the 71st percentile for the Core 5.

Q: How many cores and threads does each processor have?

A: The Intel Core 5 221TE has 10 cores and 16 threads. The Intel Core Ultra 7 366H has 16 cores and 16 threads. The Ultra 7 has 60% more cores, but the same thread count.

Q: What is the difference in process node?

A: The Intel Core 5 221TE is manufactured on a 10 nm process node. The Intel Core Ultra 7 366H is manufactured on a 3 nm process node. The smaller node contributes to higher efficiency and performance.

Q: Does the Intel Core 5 221TE support ECC memory?

A: Yes, the Intel Core 5 221TE supports ECC memory. The Intel Core Ultra 7 366H does not support ECC memory.

Q: Which processor has a higher boost clock?

A: The Intel Core 5 221TE has a boost clock of 5.00 GHz, which is higher than the Intel Core Ultra 7 366H's boost clock of 4.80 GHz. However, the Ultra 7 still achieves higher single-threaded benchmark scores.

Q: What are the TDP values for these processors?

A: The Intel Core 5 221TE has a TDP of 45 W. The Intel Core Ultra 7 366H has a TDP of 25 W. The Ultra 7 delivers higher performance with a lower TDP.

Head-to-Head Benchmarks

The head-to-head data shows a clean sweep for the Intel Core Ultra 7 366H. In Cinebench R15 multi-core, the Core 5 221TE scores 1139, while the Ultra 7 scores 2870, a delta of 60.3% in favor of the Ultra 7. In Cinebench R15 single-core, the Core 5 scores 160, and the Ultra 7 scores 405, a 60.5% advantage for the Ultra 7.

Moving to Cinebench R20, the multi-core test shows the Core 5 at 4748 and the Ultra 7 at 11960, a 60.3% lead. The single-core test shows 670 versus 1688, also a 60.3% lead. Cinebench R23 follows the same pattern: multi-core 11305 versus 28477 (60.3% lead), single-core 1596 versus 4020 (60.3% lead).

The PassMark suite reveals the most extreme differences. In data compression, the Core 5 scores 156682, and the Ultra 7 scores 327455, a 52.2% lead for the Ultra 7. Data encryption is more lopsided: 8963 versus 25845, a 65.3% lead. Extended instructions show 9655 versus 26901, a 64.1% lead.

The find prime numbers test is the biggest gap. The Core 5 scores 59, while the Ultra 7 scores 326, an 81.9% advantage for the Ultra 7. Floating point math shows 31661 versus 103615, a 69.4% lead. Integer math shows 42303 versus 83695, a 49.5% lead, which is the smallest margin in the entire comparison.

PassMark multi-thread shows 13301 versus 33429, a 60.2% lead. Physics shows 977 versus 2880, a 66.1% lead. Random string sorting shows 16929 versus 39814, a 57.5% lead. Single-thread shows 1734 versus 4043, a 57.1% lead.

The Core Ultra 7 366H's nearest rivals in the database are the Intel Core Ultra 7 356H (average score 41215, 0.1% slower), the AMD Ryzen AI 5 PRO 440 (41208, 0.1% slower), and the AMD Ryzen 9 5900X (41376, 0.3% faster). The Core 5 221TE's nearest rivals are the AMD Ryzen 5 3600XT (17891, 0.2% faster), the Intel Core 5 120U (17898, 0.2% faster), and the Intel Core 7 350 (17779, 0.5% slower). This places the Core 5 221TE in a much lower performance bracket.

The data is unambiguous. The Intel Core Ultra 7 366H outperforms the Intel Core 5 221TE in every recorded benchmark, with margins ranging from 49.5% to 81.9%. The Core 5 221TE's only advantages are platform-level: ECC support, a desktop socket, and more PCIe lanes. For anyone comparing these two based on benchmark performance, the Core Ultra 7 366H is the definitive winner.