Intel Core 5 221E vs Intel Core Ultra 7 270K Plus Comparison

The Verdict

The benchmark data positions these two Intel desktop processors in entirely different performance classes. The Intel Core Ultra 7 270K Plus wins 15 of 17 head-to-head comparisons, with an average benchmark score of 93785 versus 40144 for the Intel Core 5 221E. The Ultra 7 sits in the 96th percentile of all CPUs, while the Core 5 ranks in the 87th percentile. This is not a close contest in raw throughput.

The Intel Core 5 221E is the choice for workloads where single-core Cinebench R23 performance matters most. It wins that specific test with a 50.1% margin over the Ultra 7, and also takes Cinebench R15 single-core by 4%. Its 65 TDP and Intel Socket 1700 compatibility make it the lower-power option for systems that do not need extreme multi-threaded throughput.

The Intel Core Ultra 7 270K Plus is the clear choice for multi-threaded rendering, data compression, encryption, physics simulation, and any workload that scales across many cores. It delivers massive advantages in every multi-core benchmark, ranging from 33.1% to 71.9% ahead of the Core 5. Its 125 TDP, unlocked multiplier, and newer architecture justify the higher launch MSRP of $299 compared to $232 for the Core 5.

Architecture Differences

The two processors come from different manufacturing nodes and foundries. The Intel Core 5 221E uses a 10 nm process fabricated by Intel, while the Intel Core Ultra 7 270K Plus uses a 3 nm process from TSMC. The Ultra 7 packs 17,800 million transistors on a 243 mm² die, whereas the Core 5 lists no transistor count but has a slightly larger 257 mm² die.

The core configurations differ substantially. The Core 5 221E provides 14 cores and 20 threads, while the Ultra 7 270K Plus offers 24 cores and 24 threads. The Ultra 7 has no hyper-threading overhead across its core count, while the Core 5 supports additional threads beyond its physical cores.

Cache hierarchies reflect the architectural gap. The Core 5 uses 80 KB of L1 per core, 2 MB of L2 per core, and 24 MB of shared L3. The Ultra 7 uses 192 KB of L1 per core, 3 MB of L2 per core, and 36 MB of shared L3. Both support ECC memory, but the Core 5 supports both DDR4 and DDR5, while the Ultra 7 supports only DDR5.

Memory bandwidth favors the Ultra 7 at 115.2 GB/s versus 89.6 GB/s for the Core 5. Both use dual-channel memory buses. PCIe connectivity also differs: the Ultra 7 provides Gen 5 with 20 lanes from the CPU, while the Core 5 provides Gen 5 with 16 lanes.

Integrated graphics differ as well. The Core 5 uses UHD Graphics 730, while the Ultra 7 uses Arc Xe-LPG Graphics 64EU. The Ultra 7 has an unlocked multiplier, the Core 5 does not. Socket compatibility separates them: Intel Socket 1851 for the Ultra 7, Intel Socket 1700 for the Core 5.

FAQ

Q: Which processor has the higher boost clock?

A: The Intel Core Ultra 7 270K Plus boosts to 5.50 GHz, while the Intel Core 5 221E boosts to 5.20 GHz.

Q: How much larger is the L3 cache on the Ultra 7?

A: The Ultra 7 has 36 MB of shared L3 cache, which is 12 MB more than the 24 MB on the Core 5.

Q: Which CPU wins Cinebench R23 single-core?

A: The Intel Core 5 221E wins with a score of 3661, a 50.1% advantage over the Ultra 7's 2439.

Q: What is the power consumption difference?

A: The Core 5 221E has a 65 TDP, while the Ultra 7 270K Plus has a 125 TDP.

Q: Do both processors support ECC memory?

A: Yes, both the Core 5 221E and the Ultra 7 270K Plus support ECC memory.

Q: Which processor has more PCIe lanes?

A: The Ultra 7 provides Gen 5 with 20 lanes, while the Core 5 provides Gen 5 with 16 lanes.

Specification Differences

• Cores: 14 for Core 5 221E, 24 for Ultra 7 270K Plus
• Threads: 20 for Core 5, 24 for Ultra 7
• Base clock: 2.70 GHz for Core 5, 3.70 GHz for Ultra 7
• Boost clock: 5.20 GHz for Core 5, 5.50 GHz for Ultra 7
• TDP: 65 for Core 5, 125 for Ultra 7
• Socket: Intel Socket 1700 for Core 5, Intel Socket 1851 for Ultra 7
• Process node: 10 nm for Core 5, 3 nm for Ultra 7
• Foundry: Intel for Core 5, TSMC for Ultra 7
• Transistors: not listed for Core 5, 17,800 million for Ultra 7
• Die size: 257 mm² for Core 5, 243 mm² for Ultra 7
• L1 cache: 80 KB per core for Core 5, 192 KB per core for Ultra 7
• L2 cache: 2 MB per core for Core 5, 3 MB per core for Ultra 7
• L3 cache: 24 MB shared for Core 5, 36 MB shared for Ultra 7
• Memory support: DDR4 and DDR5 for Core 5, DDR5 only for Ultra 7
• Memory bandwidth: 89.6 GB/s for Core 5, 115.2 GB/s for Ultra 7
• PCIe: Gen 5, 16 lanes for Core 5, Gen 5, 20 lanes for Ultra 7
• Integrated graphics: UHD Graphics 730 for Core 5, Arc Xe-LPG Graphics 64EU for Ultra 7
• Multiplier unlocked: false for Core 5, true for Ultra 7
• Launch MSRP: $232 for Core 5, $299 for Ultra 7
• Release date: 2025-01-12 for Core 5, 2026-03-10 for Ultra 7

Head-to-Head Benchmarks

The multi-core Cinebench results show a consistent and large gap. In Cinebench R15 multi-core, the Ultra 7 scores 6656 versus 2613 for the Core 5, a 60.7% advantage. Cinebench R20 multi-core shows 24461 versus 10891, a 55.5% margin. Cinebench R23 multi-core gives 44253 versus 25933, a 41.4% advantage. The pattern holds across every multi-threaded workload.

PassMark multi-thread results reinforce the same conclusion. The Ultra 7 scores 68574 versus 30510, a 55.5% lead. PassMark physics shows 4064 versus 2230, a 45.1% margin. Data compression favors the Ultra 7 at 804322 versus 324285, a 59.7% gap. Data encryption gives the Ultra 7 a 67.5% lead with 59097 versus 19205. Extended instructions show the largest gap at 71.3%, with 63506 versus 18216. Prime number finding has a 71.9% margin, 615 versus 173. Floating point math shows 229491 versus 79028, a 65.6% advantage. Random string sorting gives the Ultra 7 a 61.1% lead, 96945 versus 37686.

The single-core picture is more nuanced. In Cinebench R23 single-core, the Core 5 wins decisively with 3661 versus 2439, a 50.1% margin. The Core 5 also takes Cinebench R15 single-core with 368 versus 354, a 4% advantage. However, Cinebench R20 single-core goes to the Ultra 7 with 3453 versus 1537, a 55.5% margin. PassMark single-thread also favors the Ultra 7 with 5068 versus 4147, an 18.2% lead. The two processors split the single-thread tests, with the Core 5 winning two of the four.

Integer math is the closest multi-core comparison. The Ultra 7 scores 175986 versus 117813, a 33.1% advantage, which is the smallest multi-core margin in the dataset.

Where Each One Wins

The Intel Core Ultra 7 270K Plus dominates in every multi-threaded benchmark category. Its 24 cores and 24 threads provide a substantial throughput advantage for rendering workloads, as shown by the Cinebench multi-core results. Data compression, encryption, extended instruction processing, prime number calculation, floating point math, and random string sorting all show the Ultra 7 ahead by at least 33.1% and often much more. The PassMark physics result confirms strong performance in simulation-style workloads. The 115.2 GB/s memory bandwidth and 36 MB of shared L3 cache support these multi-core results.

The Ultra 7 also wins the PassMark single-thread test by 18.2%, showing that its higher 5.50 GHz boost clock and newer 3 nm architecture deliver strong per-thread performance in that specific workload. Its unlocked multiplier allows overclocking potential, and its Arc Xe-LPG Graphics 64EU provides a more capable integrated graphics solution compared to the UHD Graphics 730.

The Intel Core 5 221E wins two specific benchmarks: Cinebench R23 single-core and Cinebench R15 single-core. The R23 result is particularly notable with a 50.1% margin, indicating that this processor delivers exceptional single-thread performance in that rendering test despite its lower 65 TDP. The 4% win in R15 single-core confirms that the Core 5 holds an advantage in at least some single-threaded legacy workloads.

The Core 5's 20 threads from 14 cores provide a reasonable multi-threaded baseline, but the data shows it trails the Ultra 7 by wide margins in all multi-core tests. Its 89.6 GB/s memory bandwidth and 24 MB of L3 cache support moderate multi-threaded workloads, but the benchmark results consistently place it below the Ultra 7.

For users prioritizing the Cinebench R23 single-core metric specifically, the Core 5 221E is the stronger choice. For all other measured workloads, the Ultra 7 270K Plus delivers significantly higher performance. The 65 TDP of the Core 5 makes it suitable for lower-power systems, while the 125 TDP of the Ultra 7 reflects its higher performance ceiling. The two processors serve different segments, with the Ultra 7 as the high-throughput option and the Core 5 as the efficient single-core specialist.