Intel Core 5 120 vs Intel Core Ultra X7 358H Comparison

Intel Core 5 120 and Intel Core Ultra X7 358H represent two very different design philosophies from Intel, one aimed at the desktop socket and the other at high-end mobile. The benchmark database records a total of 17 head-to-head comparisons, with the Core Ultra X7 358H taking 16 of them and the Core 5 120 winning only one. This lopsided scoreline, however, hides a more nuanced story about workload suitability, as the two processors target distinct market segments with different architectural priorities.

Where Each One Wins

The data splits cleanly along workload lines. The Intel Core Ultra X7 358H dominates in almost every measured category, particularly those that scale with core count and memory bandwidth. Its wins include both Cinebench multi-core tests, all PassMark throughput tests, and single-threaded workloads in both Cinebench R15 and R20. The margin is often substantial, ranging from a 14.1% advantage in Cinebench R15 single-core to a 77.2% lead in PassMark find prime numbers.

The Intel Core 5 120 secures its single victory in Cinebench R23 single-core, where it scores 2577 against 2080 for the Ultra X7, a 23.9% advantage. This is a notable outlier, as in the older Cinebench R15 and R20 single-core tests, the Ultra X7 358H leads by 14.1% and 36.2% respectively. The R23 result suggests that the Core 5 120's higher base clock of 2.50 GHz and boost clock of 4.50 GHz can, under specific sustained single-threaded loads, overcome the architectural advantages of the Panther Lake chip.

For multi-threaded productivity, the Ultra X7 358H is the clear choice. Its 16 cores and 16 threads, combined with a 3 nm process node, deliver a 45% lead in PassMark multithread (33802 vs 18597) and a 39.2% lead in Cinebench R15 multi-core. The Core 5 120, with 6 cores and 12 threads on a 10 nm node, simply cannot keep pace in heavily parallel workloads.

Architecture Differences

The two processors are built on fundamentally different foundations. The Core 5 120 uses the Raptor Lake architecture, specifically Raptor Lake-R, and is fabricated on Intel's 10 nm process. It is a desktop part with a 65 W TDP, using an Intel Socket 1700. Its cache hierarchy is smaller per core, with 80 KB of L1, 1.25 MB of L2, and 18 MB of shared L3.

The Core Ultra X7 358H belongs to the Panther Lake family, specifically Panther Lake-H, and uses a 3 nm process node. It is a mobile processor with a 25 W TDP, soldered to an Intel BGA 2540 socket. Despite the lower power budget, it features a much larger cache per core: 192 KB of L1 and 3 MB of L2, also with 18 MB of shared L3. The larger L2 and L1 caches likely contribute to its strong performance in data-intensive PassMark tests.

Memory support differs significantly. The Core 5 120 supports both DDR4 and DDR5 in a dual-channel configuration. The Core Ultra X7 358H supports only LPDDR5X, also dual-channel, but with a recorded memory bandwidth of 153.6 GB/s, a figure not listed for the desktop part. This high bandwidth is a key factor in the Ultra X7's lead in data compression and encryption tests.

PCIe connectivity also separates them. The Core 5 120 provides Gen 5 with 16 lanes from the CPU, while the Core Ultra X7 358H offers Gen 5 with only 4 lanes. This makes the desktop part more suitable for discrete GPUs and expansion cards, whereas the mobile chip is designed for a more integrated, power-efficient system. Integrated graphics differ as well, with the Core 5 120 using UHD Graphics 730 and the Ultra X7 358H using Arc B390.

Head-to-Head Benchmarks

The largest single margin in the entire comparison belongs to the Ultra X7 358H in PassMark find prime numbers, where it scores 337 against 77, a 77.2% difference. This test is highly sensitive to integer arithmetic and cache efficiency, and the Panther Lake chip's superior per-core resources and higher boost clock of 4.80 GHz (vs 4.50 GHz) deliver a decisive outcome.

In PassMark data encryption, the Ultra X7 358H records 26046 versus 11131, a 57.3% lead. This workload benefits from the larger L2 cache and the LPDDR5X memory bandwidth. Similarly, PassMark floating point math shows a 56.3% gap (103842 vs 45383), and PassMark physics shows a 55.9% gap (3021 vs 1333), both indicating the Ultra X7's strong execution units and memory subsystem.

The Cinebench R20 multi-core test shows a 36.2% lead for the Ultra X7 (12011 vs 7667), and the same 36.2% margin appears in R20 single-core (1695 vs 1082). This consistency across both single and multi-threaded R20 tests suggests that the Core 5 120's Raptor Lake cores are at a fundamental IPC disadvantage against Panther Lake at that benchmark version. However, the Cinebench R23 single-core result flips the trend, with the Core 5 120 winning by 23.9% (2577 vs 2080), a discrepancy that highlights how different benchmark versions can stress different microarchitectural features.

In PassMark multithread, the Ultra X7 leads by 45% (33802 vs 18597), reflecting its 16 cores versus 6. The data compression test shows a 34% gap (332508 vs 219535), and random string sorting shows a 46.7% gap (40357 vs 21499). The smallest Ultra X7 wins are in PassMark single-thread (4124 vs 3595, a 12.8% gap) and Cinebench R15 single-core (301.5 vs 259, a 14.1% gap), both still decisive.

The Verdict

The benchmark data indicates that the Intel Core Ultra X7 358H is the superior processor for nearly all compute-intensive tasks. Its wins span 16 of 17 comparisons, including all multi-core tests and all PassMark workloads. The 45% lead in PassMark multithread and the 57.3% lead in data encryption make it the clear choice for applications that leverage many threads, large caches, and high memory bandwidth. Its 87th percentile ranking versus all CPUs, compared to the Core 5 120's 77th percentile, confirms its higher overall standing in the database.

The Intel Core 5 120, despite its single win in Cinebench R23 single-core, remains relevant for its intended desktop market. Its 6 cores and 12 threads are sufficient for lighter workloads, and its 16 PCIe Gen 5 lanes provide expansion capability that the mobile part lacks. The 23.9% win in R23 single-core is not an anomaly to be ignored; it suggests that for certain older or specific single-threaded applications, the desktop chip can outperform the mobile flagship. However, with an average benchmark score of 25362 versus 40967 for the Ultra X7, the overall performance gap is substantial.

For a desktop user prioritizing expansion and socket compatibility, the Core 5 120 serves a purpose. For any workload where raw compute throughput, memory bandwidth, or multi-threading is paramount, the Core Ultra X7 358H is the definitive winner according to the recorded measurements.

FAQ

Q: Which processor wins more head-to-head benchmark comparisons?

A: The Intel Core Ultra X7 358H wins 16 out of 17 comparisons. The Intel Core 5 120 wins only one, specifically Cinebench R23 single-core.

Q: What is the largest performance gap between the two?

A: The largest gap is in PassMark find prime numbers, where the Core Ultra X7 358H scores 337 versus 77 for the Core 5 120, a 77.2% difference.

Q: How do their core counts and process nodes differ?

A: The Core 5 120 has 6 cores and 12 threads on a 10 nm process. The Core Ultra X7 358H has 16 cores and 16 threads on a 3 nm process.

Q: In which test does the Intel Core 5 120 outperform the Core Ultra X7 358H?

A: It wins Cinebench R23 single-core, scoring 2577 against 2080, a 23.9% advantage. This is its only recorded win.

Q: What are their TDP ratings?

A: The Core 5 120 has a TDP of 65 W, while the Core Ultra X7 358H has a TDP of 25 W. The mobile chip is rated for lower power despite higher performance.

Q: How does memory bandwidth compare between the two?

A: The Core Ultra X7 358H supports LPDDR5X with a recorded bandwidth of 153.6 GB/s. The Core 5 120 supports DDR4 and DDR5, but no bandwidth figure is listed in the database for it.