Intel Core i9-14900T vs Intel Core Ultra 5 338H Comparison

The Verdict

The recorded data splits these two processors into clearly different roles. The Intel Core i9-14900T wins 12 of the 17 head-to-head benchmarks, while the Intel Core Ultra 5 338H takes 5. The i9-14900T delivers a decisive edge in heavily threaded workloads, with its largest victory being a 112.7% lead in Cinebench R23 single-core and a 112.8% lead in PassMark integer math. The Ultra 5 338H counters with wins in extended instructions, prime number finding, physics, and single-thread PassMark tests, but those margins are smaller. The average benchmark score for the i9-14900T is 51015, placing it in the 90th percentile of all CPUs, while the Ultra 5 338H averages 33989, sitting in the 84th percentile.

For a desktop system where multi-threaded throughput matters, the i9-14900T is the stronger pick. For a mobile platform where power draw is constrained, the Ultra 5 338H offers a different balance. The data does not show the Ultra 5 338H catching the i9-14900T in any multi-core Cinebench test. The i9-14900T leads by 88.6% in Cinebench R23 multi-core, a gap large enough to define the comparison. The Ultra 5 338H's wins are narrower, with its best being a 46.1% advantage in PassMark find prime numbers.

Architecture Differences

The two processors come from different Intel generations and target different market segments. The i9-14900T belongs to the Core 14th Gen series, uses the Raptor Lake architecture (specifically Raptor Lake-R), and is built for desktop systems on Intel Socket 1700. The Ultra 5 338H belongs to the Core Ultra Series 3, uses the Panther Lake architecture (Panther Lake-H), and is a mobile processor on Intel BGA 2540. The process nodes differ sharply: the i9-14900T uses a 10 nm node, while the Ultra 5 338H uses a 3 nm node. Both are fabricated by Intel.

Core counts separate them substantially. The i9-14900T has 24 cores and 32 threads, while the Ultra 5 338H has 12 cores and 12 threads. The i9-14900T therefore supports simultaneous multithreading, the Ultra 5 338H does not. Cache hierarchies also differ. The i9-14900T has 80 KB of L1 per core, 2 MB of L2 per core, and 36 MB of shared L3. The Ultra 5 338H has 192 KB of L1 per core, 2.5 MB of L2 per core, and 18 MB of shared L3. Despite fewer cores, the Ultra 5 338H has larger per-core L1 and L2 caches.

Memory support diverges as well. The i9-14900T supports DDR4 and DDR5 over a dual-channel bus, with ECC memory enabled. The Ultra 5 338H supports LPDDR5X over a dual-channel bus, with a recorded memory bandwidth of 136.5 GB/s, and does not support ECC memory. The i9-14900T exposes PCIe Gen 5 with 16 CPU lanes, while the Ultra 5 338H exposes PCIe Gen 5 with 4 CPU lanes. Integrated graphics differ: the i9-14900T uses UHD Graphics 770, the Ultra 5 338H uses Arc B370. The i9-14900T has a launch MSRP of $549, while the Ultra 5 338H has no recorded launch MSRP.

Head-to-Head Benchmarks

The Cinebench results show a pattern of overwhelming i9-14900T dominance. In Cinebench R15 multi-core, the i9-14900T scores 3104 against 2504, a 24% lead. In R15 single-core, it scores 438 against 305, a 43.6% lead. The R20 tests show a 26.7% lead in both multi-core (12937 vs 10213) and single-core (1826 vs 1441). The R23 results widen dramatically: multi-core shows 30803 vs 16331, an 88.6% advantage, and single-core shows 4348 vs 2044, a 112.7% advantage. The single-core R23 gap is the largest relative win in the entire comparison.

PassMark results reinforce the i9-14900T's multi-thread strength. Data compression scores 436066 vs 276539, a 57.7% lead. Data encryption scores 27062 vs 21367, a 26.7% lead. Integer math scores 138149 vs 64934, a 112.8% lead. Floating point math scores 92699 vs 84067, a 10.3% lead. Multithread scores 36239 vs 28717, a 26.2% lead. Random string sorting scores 49484 vs 34082, a 45.2% lead.

The Ultra 5 338H wins are concentrated in specific workloads. PassMark extended instructions scores 23906 vs 23660, a 1% edge. PassMark find prime numbers scores 304 vs 164, a 46.1% advantage. PassMark physics scores 2697 vs 2245, a 16.8% lead. PassMark single-thread scores 4180 vs 4016, a 3.9% lead, and the duplicate singlethread test shows the same result. These wins indicate the Panther Lake architecture handles certain integer and physics workloads more efficiently per thread, but the overall benchmark average still favors the i9-14900T.

Specification Differences

The processors differ in several recorded fields. The i9-14900T has 24 cores and 32 threads, while the Ultra 5 338H has 12 cores and 12 threads. Base clocks are 1.10 GHz for the i9-14900T and 1.90 GHz for the Ultra 5 338H. Boost clocks are 5.50 GHz for the i9-14900T and 4.70 GHz for the Ultra 5 338H. TDP values are 35 W for the i9-14900T and 25 W for the Ultra 5 338H. The i9-14900T uses Intel Socket 1700, the Ultra 5 338H uses Intel BGA 2540.

Architecture and process differ: Raptor Lake on 10 nm for the i9-14900T, Panther Lake on 3 nm for the Ultra 5 338H. Die size is 257 mm² for the i9-14900T, with no recorded die size for the Ultra 5 338H. Cache values differ across all levels: L1 is 80 KB per core for the i9-14900T vs 192 KB per core for the Ultra 5 338H; L2 is 2 MB per core vs 2.5 MB per core; L3 is 36 MB shared vs 18 MB shared. Memory support differs, with the i9-14900T accepting DDR4 and DDR5 and the Ultra 5 338H accepting LPDDR5X. Memory bandwidth is only recorded for the Ultra 5 338H at 136.5 GB/s. ECC support is enabled on the i9-14900T and disabled on the Ultra 5 338H. PCIe lanes differ: 16 CPU lanes for the i9-14900T, 4 CPU lanes for the Ultra 5 338H. Integrated graphics are UHD Graphics 770 for the i9-14900T and Arc B370 for the Ultra 5 338H. The i9-14900T has a launch MSRP of $549; the Ultra 5 338H has none recorded. The i9-14900T was released on 2024-01-07, the Ultra 5 338H on 2026-01-04.

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 5 338H has 12 cores and 12 threads.

Q: How large is the performance gap in multi-core rendering?

A: In Cinebench R23 multi-core, the i9-14900T scores 30803 against 16331 for the Ultra 5 338H, a lead of 88.6%.

Q: Does the Ultra 5 338H win any benchmarks?

A: Yes, it wins 5 of 17 head-to-head tests: PassMark extended instructions, find prime numbers, physics, single-thread, and singlethread. Its largest win is a 46.1% advantage in find prime numbers.

Q: What are the TDP differences?

A: The i9-14900T has a TDP of 35 W, while the Ultra 5 338H has a TDP of 25 W.

Q: Which processor has higher clock speeds?

A: The i9-14900T has a base clock of 1.10 GHz and a boost clock of 5.50 GHz. The Ultra 5 338H has a base clock of 1.90 GHz and a boost clock of 4.70 GHz.

Q: Do the two processors support the same memory types?

A: No. The i9-14900T supports DDR4 and DDR5 with ECC, while the Ultra 5 338H supports LPDDR5X without ECC and records 136.5 GB/s of memory bandwidth.

Where Each One Wins

The i9-14900T wins every multi-core Cinebench test and most PassMark tests, making it the clear choice for workloads that scale with core count. Data compression, integer math, floating point math, encryption, and random string sorting all favor the i9-14900T by margins ranging from 10.3% to 112.8%. Its 36 MB of shared L3 and 32 threads support heavy parallel processing. The 24-core count and 5.50 GHz boost clock explain why it holds a 90th percentile rank against all CPUs.

The Ultra 5 338H wins in PassMark physics, find prime numbers, extended instructions, and single-thread tests. Its 3 nm process node and larger per-core L1 and L2 caches likely contribute to these results. The 46.1% lead in find prime numbers and the 16.8% lead in physics suggest the Panther Lake architecture handles certain integer and simulation workloads more efficiently per core. Its 25 W TDP also positions it as a lower-power option, though the data does not include thermal or battery measurements.

The use-case split follows the benchmark pattern. The i9-14900T suits desktop systems where multi-threaded throughput is the priority, such as rendering, compression, and math-heavy tasks. The Ultra 5 338H suits mobile systems where per-core efficiency in specific workloads matters more, and where the smaller PCIe lane count and LPDDR5X memory support align with a laptop platform. The i9-14900T's 16 PCIe Gen 5 lanes also make it more flexible for expansion, while the Ultra 5 338H's 4 lanes reflect its mobile orientation. The data does not show the Ultra 5 338H overtaking the i9-14900T in any multi-core test, so any decision between them rests on platform type and workload mix rather than overall performance.