Intel Core 5 221E vs Intel Core Ultra X9 378H Comparison

Intel Core 5 221E and Intel Core Ultra X9 378H are two very different processors aimed at different segments. The Core 5 221E is a desktop chip on Socket 1700, while the Core Ultra X9 378H is a mobile processor on BGA 2540. The data shows a clear performance hierarchy, but the Core 5 221E holds one notable advantage. Benchmark results indicate the Core Ultra X9 378H wins 16 of the 17 recorded head-to-head tests, with the Core 5 221E taking a single, significant victory.

Where Each One Wins

The Intel Core Ultra X9 378H dominates the vast majority of workloads. It wins every Cinebench test, including both multi-core and single-core variants across R15, R20, and R23. In multi-core tests, the Ultra X9 378H consistently delivers about 20.3% higher scores. For example, in Cinebench R23 multi-core, the Ultra scores 32553 versus 25933 for the Core 5 221E. This makes the Ultra X9 378H the clear choice for rendering, video encoding, and other heavily threaded tasks.

The Ultra X9 378H also wins all PassMark tests except one. Its largest margins come in integer-heavy and specialized workloads. It leads by 41.8% in extended instructions, 35.6% in data encryption, and 34.5% in physics. These results indicate superior performance in cryptography, scientific computing, and simulation tasks. The single-threaded PassMark score shows a smaller but still consistent 6.9% lead, confirming better general single-core efficiency.

The Intel Core 5 221E wins exactly one test: PassMark integer math. It scores 117813 against 92603 for the Ultra X9 378H, a 27.2% advantage. This is a substantial margin and suggests the Core 5 221E has a specific strength in pure integer arithmetic workloads, which can matter in certain database, financial, or legacy software scenarios. Outside of this single metric, the Core 5 221E does not outperform the Ultra X9 378H in any other recorded benchmark.

Architecture Differences

The two processors come from different Intel families and use distinct manufacturing processes. The Core 5 221E is based on the Bartlett Lake architecture and uses Intel's 10 nm process. It is a desktop part with a 65 W TDP. The Core Ultra X9 378H is a Panther Lake-H mobile chip built on a 3 nm process, with a much lower 25 W TDP. This process node difference explains why the mobile chip can achieve higher performance while consuming less power.

Core and thread counts differ significantly. The Core 5 221E has 14 cores and 20 threads, while the Core Ultra X9 378H has 16 cores and 16 threads. The Core 5 221E uses Hyper-Threading, which gives it more threads than cores. The Ultra X9 378H does not use Hyper-Threading, so its thread count equals its core count. Despite having fewer threads, the Ultra X9 378H still wins most multi-threaded tests, indicating its individual cores are substantially more efficient.

Cache layouts also differ. The Core 5 221E has 80 KB of L1 cache per core, 2 MB of L2 per core, and 24 MB of shared L3 cache. The Ultra X9 378H has 192 KB of L1 per core, 2.5 MB of L2 per core, but only 18 MB of shared L3. The larger L3 on the desktop part does not compensate for the Ultra's superior core efficiency in most benchmarks. The Ultra X9 378H also has a higher memory bandwidth of 153.6 GB/s versus 89.6 GB/s for the Core 5 221E, which contributes to its stronger performance in bandwidth-sensitive tasks.

Other architectural differences include integrated graphics. The Core 5 221E uses UHD Graphics 730, while the Ultra X9 378H features Arc B390. The Ultra X9 378H supports LPDDR5X memory only, while the Core 5 221E supports DDR4 and DDR5. The Core 5 221E supports ECC memory, which the Ultra X9 378H does not. PCIe lane counts also differ: the Core 5 221E has 16 CPU lanes of Gen 5, while the Ultra X9 378H has only 4 CPU lanes.

Head-to-Head Benchmarks

The Cinebench results show a uniform pattern. Across all six Cinebench tests, the Core Ultra X9 378H wins by nearly identical margins: 20.4% in R15 multi-core, 20.3% in R15 single-core, 20.3% in R20 multi-core, 20.3% in R20 single-core, 20.3% in R23 multi-core, and 20.3% in R23 single-core. This consistency indicates a fundamental per-core performance advantage rather than a scaling effect. The Ultra X9 378H delivers roughly 20% more performance in every rendering and CPU stress scenario.

PassMark tests show a wider range of margins. The smallest Ultra X9 378H win is 6.9% in single-threaded tests, where it scores 4453 versus 4147. This is notable because the Core 5 221E has a higher boost clock of 5.20 GHz versus 5.00 GHz for the Ultra X9 378H. Despite the lower clock, the Ultra's newer architecture wins. The largest Ultra X9 378H margin is 51.5% in find prime numbers, scoring 357 versus 173. This massive gap suggests the Ultra X9 378H has a significantly better branch predictor or integer execution pipeline.

Data compression and random string sorting show moderate Ultra X9 378H advantages of 16.1% and 15.6%, respectively. Floating point math shows a 31% lead in favor of the Ultra X9 378H. The largest non-Cinebench win for the Core 5 221E is in integer math, where it leads by 27.2%. This is the only test where the desktop part's higher thread count and architecture combination outperforms the mobile chip. The overall average benchmark scores confirm the hierarchy: the Ultra X9 378H averages 47468, while the Core 5 221E averages 40144.

Specification Differences

The two CPUs differ in several key specification fields. The Core 5 221E has 14 cores and 20 threads, while the Ultra X9 378H has 16 cores and 16 threads. Base clocks are 2.70 GHz for the Core 5 221E and 2.00 GHz for the Ultra X9 378H. Boost clocks are 5.20 GHz and 5.00 GHz, respectively. Thermal design power is 65 W for the desktop part and 25 W for the mobile part.

Socket types differ completely: the Core 5 221E uses Intel Socket 1700, while the Ultra X9 378H uses Intel BGA 2540. Process nodes are 10 nm for the Core 5 221E and 3 nm for the Ultra X9 378H. L1 cache is 80 KB per core versus 192 KB per core, L2 cache is 2 MB per core versus 2.5 MB per core, and L3 cache is 24 MB shared versus 18 MB shared. Memory support is DDR4 and DDR5 for the desktop part, while the mobile part supports LPDDR5X only. Memory bandwidth is 89.6 GB/s versus 153.6 GB/s. ECC memory is supported only on the Core 5 221E. PCIe lanes are 16 for the desktop part and 4 for the mobile part. Integrated graphics are UHD Graphics 730 versus Arc B390. The Core 5 221E has a launch MSRP of $232, while the Ultra X9 378H has no listed launch MSRP.

FAQ

Q: Which processor is faster in multi-core rendering?

A: The Intel Core Ultra X9 378H wins all multi-core Cinebench tests by about 20.3%. In Cinebench R23 multi-core, it scores 32553 versus 25933 for the Intel Core 5 221E.

Q: Does the Intel Core 5 221E win any benchmark?

A: Yes, it wins PassMark integer math with a score of 117813, which is 27.2% higher than the Intel Core Ultra X9 378H's 92603. This is its only win in the 17 recorded tests.

Q: How do the clock speeds compare?

A: The Intel Core 5 221E has a higher base clock of 2.70 GHz and a higher boost clock of 5.20 GHz. The Intel Core Ultra X9 378H has a base clock of 2.00 GHz and a boost clock of 5.00 GHz.

Q: What are the core and thread counts?

A: The Intel Core 5 221E has 14 cores and 20 threads. The Intel Core Ultra X9 378H has 16 cores and 16 threads. The Core 5 221E uses Hyper-Threading, while the Ultra X9 378H does not.

Q: Which processor has more L3 cache?

A: The Intel Core 5 221E has 24 MB of shared L3 cache. The Intel Core Ultra X9 378H has 18 MB of shared L3 cache.

Q: What is the average benchmark score difference?

A: The Intel Core Ultra X9 378H has an average benchmark score of 47468, while the Intel Core 5 221E has an average of 40144. This places the Ultra X9 378H in the 89th percentile of all CPUs, compared to the 87th percentile for the Core 5 221E.

The Verdict

The Intel Core Ultra X9 378H is the faster processor in nearly every measurable way. It wins 16 of 17 benchmarks and holds a 20.3% lead across all Cinebench multi-core and single-core tests. Its 3 nm process node and 153.6 GB/s memory bandwidth give it a decisive edge in rendering, encryption, physics, and most integer workloads. The 89th percentile ranking versus the Core 5 221E's 87th percentile confirms its higher overall standing. For users who prioritize raw performance in multi-threaded tasks, single-core speed, or specialized workloads like data encryption, the Ultra X9 378H is the clear choice.

The Intel Core 5 221E is not without merit. Its 27.2% win in PassMark integer math is the single largest margin in any test, and it offers ECC memory support that the mobile part lacks. Its 65 W TDP and 24 MB L3 cache suit desktop builds where power consumption is less critical. The 14-core, 20-thread configuration with a 5.20 GHz boost clock still delivers strong results, as shown by its 25933 score in Cinebench R23 multi-core. The database indicates the Core 5 221E is the better option for workloads specifically reliant on integer math, or for systems requiring ECC memory. For all other purposes, the data points firmly to the Intel Core Ultra X9 378H.