Intel Core 5 221E vs Intel Core Ultra 7 265T Comparison
Intel Core 5 221E
Core Ultra 7 265T
PERFORMANCE BENCHMARKS
Analysis: Intel Core 5 221E vs Intel Core Ultra 7 265T
The Verdict
The data presents a clear performance hierarchy between these two Intel desktop processors. The Intel Core Ultra 7 265T wins 16 of the 17 recorded head-to-head benchmark comparisons, establishing it as the dominant performer in nearly every measured workload. Its average benchmark score of 47,697 places it in the 90th percentile of all CPUs, while the Intel Core 5 221E averages 40,144 and sits in the 87th percentile.
The Core 5 221E claims a single victory in PassMark integer math, where it scores 117,813 against the Ultra 7's 104,943, a 12.3% advantage. This is the only area where the lower-tier chip fights back. For users prioritizing raw multi-threaded throughput, Cinebench results, encryption, compression, or floating-point work, the Ultra 7 265T is the definitive choice based on the recorded measurements.
The Core 5 221E remains a viable option for systems constrained by platform compatibility, specifically those using Intel Socket 1700 with DDR4 memory support. However, the benchmark data shows no performance category outside of integer math where it surpasses the Ultra 7. The Ultra 7 also delivers this performance at a 35 TDP compared to the 65 TDP of the Core 5, a significant efficiency gap that the measurements support.
Architecture Differences
The two processors come from fundamentally different design families. The Core 5 221E uses the Bartlett Lake codename built on a 10 nm process node from Intel's own foundry. Its die measures 257 mm². The Core Ultra 7 265T uses the Arrow Lake-S architecture on a 3 nm process node fabricated by TSMC, with a die size of 243 mm² and a transistor count of 17,800 million. The Core 5's transistor count is not recorded in the database.
Core configurations differ substantially. The Core 5 221E has 14 cores and 20 threads, while the Ultra 7 265T has 20 cores and also 20 threads. This means the Ultra 7 achieves thread parity with more physical cores, which explains part of its multi-threaded advantage. The Ultra 7 also carries a larger cache hierarchy: 192 KB of L1 per core versus 80 KB, 3 MB of L2 per core versus 2 MB, and 30 MB of shared L3 versus 24 MB.
Clock speeds tell a nuanced story. The Core 5 221E has a base clock of 2.70 GHz and boosts to 5.20 GHz. The Ultra 7 265T has a lower base of 1.50 GHz but a higher boost of 5.30 GHz. Despite the lower base frequency, the Ultra 7 wins all single-threaded Cinebench tests by roughly 18%, indicating the newer architecture delivers more instructions per clock at similar boost frequencies.
Memory support diverges completely. The Core 5 221E supports both DDR4 and DDR5 in a dual-channel configuration with 89.6 GB/s of bandwidth. The Ultra 7 265T supports only DDR5 but offers 102.4 GB/s. ECC memory is supported by the Core 5 but not by the Ultra 7. The Ultra 7 also provides more PCIe lanes: 20 Gen 5 lanes versus 16 Gen 5 lanes on the Core 5.
Integrated graphics differ as well. The Core 5 221E uses UHD Graphics 730, while the Ultra 7 265T features Arc Xe-LPG Graphics 64EU. The Ultra 7's newer GPU architecture and higher EU count suggest stronger iGPU performance, though no direct graphics benchmarks appear in the recorded data.
Where Each One Wins
The Ultra 7 265T dominates across almost every benchmark category. In Cinebench R23 multi-core, it scores 31,558 versus 25,933, a 17.8% lead. Single-core R23 shows 4,455 versus 3,661, also 17.8% ahead. These Cinebench results indicate advantages in both heavily threaded rendering workloads and lightly threaded tasks like UI responsiveness or application launch sequences.
PassMark data compression shows the Ultra 7 at 370,158 against 324,285, a 12.4% lead. Data encryption reveals a much larger gap: 29,687 versus 19,205, or 35.3% ahead. Extended instructions testing shows 28,609 versus 18,216, a 36.3% advantage. Prime number finding, a demanding integer operation, shows the Ultra 7 at 322 versus 173, a 46.3% lead, the largest single delta in the entire comparison.
Floating-point math favors the Ultra 7 heavily: 129,817 versus 79,028, a 39.1% advantage. Multi-threaded PassMark scores 37,084 versus 30,510, a 17.7% lead. Physics simulation scores 2,391 versus 2,230, a smaller but still positive 6.7% edge. Random string sorting shows 44,400 versus 37,686, a 15.1% lead. Single-thread PassMark shows 4,338 versus 4,147, a 4.4% advantage.
The Core 5 221E wins exclusively in PassMark integer math: 117,813 versus 104,943, a 12.3% margin. This suggests that for workloads dominated by simple integer arithmetic without complex branching or memory access patterns, the Core 5's higher base clock of 2.70 GHz may compensate for its older architecture. The recorded data indicates this is an isolated victory, not a trend.
FAQ
Q: Which processor has more cores?
A: The Intel Core Ultra 7 265T has 20 cores, while the Intel Core 5 221E has 14 cores. Both processors offer 20 threads.
Q: Does the Core 5 221E support DDR4 memory?
A: Yes, the Core 5 221E supports both DDR4 and DDR5 in a dual-channel configuration. The Core Ultra 7 265T supports DDR5 only.
Q: Which processor has the higher boost clock?
A: The Core Ultra 7 265T boosts to 5.30 GHz, slightly higher than the Core 5 221E's 5.20 GHz boost. The Core 5 has a higher base clock at 2.70 GHz versus 1.50 GHz.
Q: How much larger is the L3 cache on the Ultra 7?
A: The Core Ultra 7 265T has 30 MB of shared L3 cache, while the Core 5 221E has 24 MB. The Ultra 7 also has larger L1 and L2 caches per core.
Q: Which processor supports ECC memory?
A: The Core 5 221E supports ECC memory. The Core Ultra 7 265T does not list ECC support in the database.
Q: What are the average benchmark scores for each processor?
A: The Core Ultra 7 265T averages 47,697 across all recorded benchmarks, placing it in the 90th percentile. The Core 5 221E averages 40,144 and sits in the 87th percentile.
Head-to-Head Benchmarks
The Cinebench suite shows consistent Ultra 7 dominance. In R15 multi-core, the Ultra 7 scores 3,180 versus 2,613, a 17.8% gap. R15 single-core shows 449 versus 368, an 18% difference. R20 multi-core yields 13,254 versus 10,891, again 17.8%. R20 single-core shows 1,871 versus 1,537, a 17.9% margin. R23 multi-core and single-core both show 17.8% leads for the Ultra 7 at 31,558 versus 25,933 and 4,455 versus 3,661 respectively. These near-uniform deltas suggest the Ultra 7's architectural efficiency advantage holds regardless of thread count.
PassMark data encryption reveals the Ultra 7's biggest win in the security-adjacent category: 29,687 versus 19,205, a 35.3% lead. Extended instructions show a similar 36.3% gap at 28,609 versus 18,216. Prime number finding, a pure CPU stress test, shows the largest percentage difference at 46.3% (322 versus 173). Floating-point math shows 129,817 versus 79,028, a 39.1% margin.
The Core 5's only victory comes in PassMark integer math: 117,813 versus 104,943, a 12.3% lead. This counter-trend is notable because the Ultra 7 wins the other integer-heavy test, prime number finding, by a wide margin. The integer math test may favor the Core 5's higher base clock in a single-threaded burst scenario, while prime finding benefits from the Ultra 7's larger caches and newer execution resources.
Other PassMark tests show moderate Ultra 7 leads: data compression at 370,158 versus 324,285 (12.4%), multi-thread at 37,084 versus 30,510 (17.7%), physics at 2,391 versus 2,230 (6.7%), random string sorting at 44,400 versus 37,686 (15.1%), and single-thread at 4,338 versus 4,147 (4.4%). The physics gap is the smallest positive margin for the Ultra 7, suggesting that simulation workloads with mixed instruction types narrow the architectural difference.
Specification Differences
The two processors differ in every major specification category. The Core 5 221E uses Intel Socket 1700, while the Ultra 7 265T uses Intel Socket 1851. This alone prevents cross-compatibility between the two platforms.
Process technology separates them clearly: the Core 5 uses 10 nm from Intel's foundry, while the Ultra 7 uses 3 nm from TSMC. Die sizes are close at 257 mm² versus 243 mm², but the Ultra 7 packs 17,800 million transistors into its smaller die. The Core 5's transistor count is not recorded.
Core and thread counts differ: 14 cores and 20 threads for the Core 5 versus 20 cores and 20 threads for the Ultra 7. Clock speeds show the Core 5 with a 2.70 GHz base and 5.20 GHz boost, while the Ultra 7 has a 1.50 GHz base and 5.30 GHz boost. TDP ratings favor the Ultra 7 at 35 watts versus 65 watts for the Core 5.
Cache configurations differ at every level: L1 is 80 KB per core versus 192 KB, L2 is 2 MB per core versus 3 MB, and L3 is 24 MB shared versus 30 MB shared. Memory support shows the Core 5 accepting DDR4 and DDR5 with 89.6 GB/s bandwidth, while the Ultra 7 accepts DDR5 only with 102.4 GB/s. ECC support exists only on the Core 5.
PCIe connectivity favors the Ultra 7 with 20 Gen 5 lanes versus 16 Gen 5 lanes on the Core 5. Integrated graphics differ: UHD Graphics 730 on the Core 5 versus Arc Xe-LPG Graphics 64EU on the Ultra 7. Release dates are close, with the Core 5 released on 2025-01-12 and the Ultra 7 on 2025-01-06. The launch MSRP for the Core 5 221E is $232, and for the Ultra 7 265T it is $384. Both processors have locked multipliers and active production status.