Intel Core i9-14900T vs Intel Core Ultra X9 378H Comparison

Head-to-Head Benchmarks

The head-to-head comparison between the Intel Core i9-14900T and the Intel Core Ultra X9 378H shows a lopsided victory for the newer mobile part. The Ultra X9 378H wins 14 of the 17 benchmark comparisons, while the i9-14900T manages only 3 wins. However, the margins in each direction tell a more nuanced story about the strengths of each processor.

Starting with the Cinebench suite, the Ultra X9 378H wins every single test. In Cinebench R15 multi-core, it scores 3281 against the i9-14900T's 3104, a 5.4% advantage. The single-core R15 test shows 462 versus 438, a 5.2% margin. Moving to Cinebench R20, the Ultra X9 378H posts 13672 in multi-core versus 12937, and 1929 in single-core versus 1826, both again around 5.3% to 5.4% ahead. The R23 results continue the pattern: 32553 versus 30803 in multi-core and 4595 versus 4348 in single-core, both with a 5.4% delta. These consistent margins across all three Cinebench versions indicate a uniform performance advantage in both lightly threaded and heavily threaded rendering workloads.

The Passmark suite reveals a different set of outcomes. The i9-14900T strikes back decisively in integer math, scoring 138149 against the Ultra X9 378H's 92603, a massive 49.2% lead. Data compression also favors the i9-14900T, with a score of 436066 versus 386591, a 12.8% advantage. Random string sorting goes to the i9-14900T as well, 49484 versus 44648, a 10.8% margin.

The Ultra X9 378H dominates the remaining Passmark tests. Extended instructions show a 24.4% lead (31315 versus 23660). Floating point math favors the Ultra X9 378H by 19% (114500 versus 92699). Physics performance shows a 34% gap (3404 versus 2245). The find prime numbers test is the most dramatic: 357 versus 164, a 54.1% margin for the Ultra X9 378H. Data encryption goes to the Ultra X9 378H with 29840 versus 27062, a 9.3% lead. The multithread score is 38298 versus 36239, a 5.4% advantage. Single-thread performance shows 4453 versus 4016, a 9.8% gap.

The average benchmark score in the database places the i9-14900T at 51015 and the Ultra X9 378H at 47468, yet the head-to-head results tell a different story because the Cinebench tests are weighted equally with the Passmark tests in this comparison. The percentile rankings are close: the i9-14900T sits at the 90th percentile among all CPUs, while the Ultra X9 378H sits at the 89th percentile.

Where Each One Wins

The data indicates a clear split based on workload type. The i9-14900T wins in workloads that rely on integer arithmetic and data manipulation. The integer math score of 138149 stands out as the single largest win for either processor, 49.2% ahead of the Ultra X9 378H. This suggests the i9-14900T handles tasks like database operations, file compression, and general computation more efficiently. Data compression at 436066 and random string sorting at 49484 both show double-digit advantages, reinforcing the picture of a processor that excels at data processing tasks.

The Ultra X9 378H wins in rendering, encryption, and scientific workloads. The Cinebench results across all three versions show consistent 5.4% margins in multi-core tests, indicating better sustained performance in 3D rendering tasks. The physics test score of 3404 versus 2245, a 34% advantage, suggests stronger simulation performance. The find prime numbers result, 357 versus 164, points to a significant edge in integer-heavy mathematical workloads, though this seems to contradict the integer math result on the surface. The extended instructions score, 31315 versus 23660, shows the Ultra X9 378H handles SIMD and vectorized instructions with much greater throughput.

Floating point math favors the Ultra X9 378H by 19%, which aligns with its rendering performance. Encryption workloads also favor the Ultra X9 378H, with a 9.3% margin. Single-thread performance across Passmark and Cinebench consistently favors the Ultra X9 378H, with margins ranging from 5.2% to 9.8%.

The pattern suggests the i9-14900T is optimized for traditional integer-heavy desktop workloads, while the Ultra X9 378H delivers stronger performance in modern vectorized, floating-point, and parallel rendering tasks.

Architecture Differences

The two processors come from different architectural generations and manufacturing processes. The i9-14900T uses Raptor Lake architecture, codenamed Raptor Lake-R, built on Intel's 10 nm process. It is part of the Core 14th Gen series, specifically the Raptor Lake Refresh generation. The Ultra X9 378H uses Panther Lake architecture, codenamed Panther Lake-H, built on Intel's 3 nm process. It belongs to the Core Ultra Series 3 and the Ultra X9 generation. Both are manufactured by Intel.

The process node difference is substantial: 10 nm versus 3 nm. This accounts for significant efficiency and density differences. The i9-14900T has a die size of 257 mm², while the Ultra X9 378H has no recorded die size in the database.

Core configurations diverge sharply. The i9-14900T has 24 cores and 32 threads, while the Ultra X9 378H has 16 cores and 16 threads. The i9-14900T therefore relies on Hyper-Threading to double its thread count, while the Ultra X9 378H has no thread-doubling capability. Despite having fewer cores and threads, the Ultra X9 378H still wins most multi-threaded benchmarks, which indicates the 3 nm Panther Lake cores are substantially more efficient per core.

Cache hierarchies differ in both size and organization. The i9-14900T has 80 KB of L1 cache per core, 2 MB of L2 per core, and 36 MB of shared L3 cache. The Ultra X9 378H has 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3 cache. The Ultra X9 378H provides more per-core cache but half the total L3. The larger per-core L1 and L2 caches likely contribute to its single-thread performance advantages.

Memory support differs as well. The i9-14900T supports DDR4 and DDR5 memory in a dual-channel configuration. The Ultra X9 378H supports LPDDR5X in a dual-channel configuration with a recorded memory bandwidth of 153.6 GB/s. The i9-14900T supports ECC memory, while the Ultra X9 378H does not.

PCIe connectivity also differs. The i9-14900T provides Gen 5 with 16 lanes from the CPU, while the Ultra X9 378H provides Gen 5 with only 4 lanes from the CPU. This reflects the desktop versus mobile design priorities. The i9-14900T targets desktop systems with full expansion capability, while the Ultra X9 378H is built for compact mobile platforms.

Integrated graphics differ. The i9-14900T includes UHD Graphics 770, while the Ultra X9 378H includes Arc B390. The Arc B390 represents a newer GPU architecture, though the database does not provide comparative graphics benchmarks.

Specification Differences

The core count difference is the most obvious specification gap: 24 cores for the i9-14900T versus 16 for the Ultra X9 378H. Thread counts are 32 versus 16, meaning the i9-14900T has twice the thread count despite only 50% more cores.

Clock speeds differ in both directions. The i9-14900T has a lower base clock of 1.10 GHz versus the Ultra X9 378H's 2.00 GHz. However, the i9-14900T has a higher boost clock of 5.50 GHz versus 5.00 GHz for the Ultra X9 378H. The higher base clock of the Ultra X9 378H likely contributes to its consistent single-thread wins.

Thermal design power differs significantly. The i9-14900T has a TDP of 35 watts, while the Ultra X9 378H has a TDP of 25 watts. Despite the lower power envelope, the Ultra X9 378H delivers higher performance in most benchmarks, demonstrating the efficiency gains from the 3 nm process.

Socket types reflect their market segments. The i9-14900T uses Intel Socket 1700, a desktop socket. The Ultra X9 378H uses Intel BGA 2540, a mobile ball-grid array. The market segments are accordingly Desktop for the i9-14900T and Mobile for the Ultra X9 378H.

Release dates show the Ultra X9 378H is a newer product. The i9-14900T was released on 2024-01-07, while the Ultra X9 378H was released on 2026-04-03. Both are marked as Active in production status. The i9-14900T has a recorded launch MSRP of $549, while the Ultra X9 378H has no recorded launch MSRP. Both have locked multipliers. The part numbers differ: SRN3U for the i9-14900T and unknown for the Ultra X9 378H.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core i9-14900T has 24 cores and 32 threads, while the Intel Core Ultra X9 378H has 16 cores and 16 threads. The i9-14900T has double the thread count.

Q: How do the clock speeds compare?

A: The i9-14900T has a base clock of 1.10 GHz and a boost clock of 5.50 GHz. The Ultra X9 378H has a base clock of 2.00 GHz and a boost clock of 5.00 GHz. The Ultra X9 378H has the higher base clock, while the i9-14900T has the higher boost clock.

Q: Which processor wins in Cinebench benchmarks?

A: The Ultra X9 378H wins all Cinebench tests. In R15 multi-core it scores 3281 versus 3104, in R20 multi-core 13672 versus 12937, and in R23 multi-core 32553 versus 30803. Single-core tests show similar 5.2% to 5.4% margins in favor of the Ultra X9 378H.

Q: What is the i9-14900T's biggest win?

A: The i9-14900T's largest victory is in Passmark integer math, scoring 138149 against the Ultra X9 378H's 92603, a 49.2% advantage. It also wins data compression by 12.8% and random string sorting by 10.8%.

Q: How do the process nodes differ?

A: The i9-14900T is built on Intel's 10 nm process, while the Ultra X9 378H is built on Intel's 3 nm process. The Ultra X9 378H achieves higher performance in most benchmarks despite a lower 25 watt TDP versus the i9-14900T's 35 watt TDP.

Q: What memory types does each support?

A: The i9-14900T supports DDR4 and DDR5 in dual-channel mode. The Ultra X9 378H supports LPDDR5X in dual-channel mode with a recorded memory bandwidth of 153.6 GB/s. The i9-14900T supports ECC memory, while the Ultra X9 378H does not.

Q: Which processor sits higher in the overall percentile ranking?

A: The i9-14900T is at the 90th percentile among all CPUs, while the Ultra X9 378H is at the 89th percentile. The i9-14900T also has a higher average benchmark score of 51015 versus 47468.

The Verdict

The data supports different choices depending on the use case. For desktop systems with expansion needs, the i9-14900T offers 16 PCIe Gen 5 lanes, DDR4 and DDR5 memory support, ECC memory capability, and a 257 mm² die on the 10 nm process. Its integer math performance is exceptional, with a 49.2% lead over the Ultra X9 378H. Data compression and random string sorting also favor the i9-14900T by double digits. The 36 MB of shared L3 cache provides a large pool for data-heavy workloads.

For mobile platforms and power-constrained environments, the Ultra X9 378H is the stronger choice. It operates at 25 watts TDP compared to 35 watts, uses a 3 nm process, and still wins 14 of 17 benchmark comparisons. Its Cinebench multi-core scores are consistently 5.4% higher, and its single-thread performance is 5.2% to 9.8% better across all tests. The floating point math advantage of 19%, physics advantage of 34%, and extended instructions advantage of 24.4% make it the better pick for rendering, simulation, and vectorized workloads. The 153.6 GB/s memory bandwidth on LPDDR5X support further strengthens its position for memory-intensive mobile tasks.

The 89th versus 90th percentile rankings and the average benchmark scores of 47468 versus 51015 indicate the i9-14900T is slightly stronger on aggregate, but the head-to-head results show the Ultra X9 378H wins the majority of direct comparisons. The i9-14900T's wins are concentrated in specific integer-heavy workloads where it has overwhelming advantages, while the Ultra X9 378H wins across the breadth of rendering, encryption, physics, and single-thread tests.

The choice depends on whether the workload matches the i9-14900T's integer and data-processing strengths or the Ultra X9 378H's floating point, vectorized, and rendering strengths. The i9-14900T also offers desktop socket compatibility with Socket 1700 and a launch MSRP of $549, positioning it as a desktop part with specific performance characteristics. The Ultra X9 378H targets mobile with BGA 2540 and has no recorded launch MSRP. Both are Active in production, so availability continues for both.