Intel Core i9-14900T vs Intel Core Ultra X7 358H Comparison

Head-to-Head Benchmarks

The benchmark data presents a fascinating split between the Intel Core i9-14900T and the Intel Core Ultra X7 358H. Across 17 head-to-head tests, the i9-14900T claims 11 wins while the Ultra X7 358H takes 6, but the margins tell a more nuanced story.

The most decisive victory for the i9-14900T comes in Cinebench R23 single-core, where it scores 4348 against 2080, a 109% advantage. This is the largest delta in the entire comparison. The R23 multi-core test also heavily favors the desktop part, with the i9-14900T scoring 30803 versus 18747, a 64.3% lead. Cinebench R15 single-core shows a 45.3% gap (438 vs 301.5), while R20 multi-core and single-core both show a 7.7% edge (12937 vs 12011 and 1826 vs 1695 respectively). R15 multi-core is closer, with the i9-14900T ahead by just 2.5% (3104 vs 3027).

PassMark integer math delivers a 66.2% win for the i9-14900T (138149 vs 83147). Data compression shows a 31.1% advantage (436066 vs 332508), and random string sorting comes in at 22.6% (49484 vs 40357). Multi-thread performance favors the i9-14900T by 7.2% (36239 vs 33802), while data encryption shows a modest 3.9% lead (27062 vs 26046).

The Ultra X7 358H counters with strong results in several specialized workloads. Its most significant win is in PassMark find prime numbers, where it scores 337 against 164, a 51.3% advantage. Physics tests show a 25.7% lead (3021 vs 2245). Extended instructions deliver a 13.3% edge (27274 vs 23660), and floating point math comes in at 10.7% higher (103842 vs 92699). Single-thread performance in PassMark is nearly identical, with the Ultra X7 358H ahead by just 2.6% (4124 vs 4016).

The average benchmark score positions the i9-14900T at 51015 (90th percentile among all CPUs) versus 40967 for the Ultra X7 358H (87th percentile). The i9-14900T sits between the Intel Core Ultra 9 285T (51310, -0.6%) and the AMD Ryzen 9 5900XT (50718, +0.6%), while the Ultra X7 358H trails the Intel Core Ultra 7 366H (41263, -0.7%) and the Intel Core Ultra 7 356H (41215, -0.6%).

Where Each One Wins

The data indicates that the i9-14900T is the clear choice for heavily threaded, integer-heavy workloads. Its 24 cores and 32 threads give it a structural advantage in Cinebench multi-core tests and in PassMark multithread, integer math, data compression, and random string sorting. The 64.3% R23 multi-core margin and the 66.2% integer math margin suggest that productivity tasks such as video rendering, code compilation, and database operations will favor the desktop part.

The Ultra X7 358H wins in workloads that appear to reward its architecture rather than raw core count. Its 51.3% lead in prime number finding points to strong per-core integer throughput in specific algorithmic patterns. The 25.7% physics advantage suggests better performance in simulation and physics-based calculations. Floating point math at 10.7% higher and extended instructions at 13.3% higher indicate that the mobile chip's execution units handle certain instruction classes more efficiently.

PassMark single-thread performance is effectively a tie (4124 vs 4016, a 2.6% delta), which is notable because the i9-14900T has a much higher boost clock of 5.50 GHz versus 4.80 GHz. The Ultra X7 358H compensates for its lower clock with architectural improvements, as evidenced by its higher L1 cache of 192 KB per core versus 80 KB per core.

Architecture Differences

The two processors come from fundamentally different design lineages. The i9-14900T uses the Raptor Lake architecture on a 10 nm process node from Intel, with a die size of 257 mm². The Ultra X7 358H uses the Panther Lake codename on a 3 nm process node, also from Intel, though its die size is not recorded. This process node difference (3 nm versus 10 nm) likely explains how the mobile part achieves competitive single-thread scores with a 0.70 GHz lower boost clock.

Core configurations differ sharply. The i9-14900T has 24 cores and 32 threads, indicating hyper-threading support. The Ultra X7 358H has 16 cores and 16 threads, meaning no hyper-threading. The desktop part's 36 MB of shared L3 cache dwarfs the mobile chip's 18 MB. However, the Ultra X7 358H has larger per-core caches: 192 KB L1 per core versus 80 KB, and 3 MB L2 per core versus 2 MB.

Memory support also diverges. The i9-14900T supports DDR4 and DDR5 memory over a dual-channel bus, with ECC memory support enabled. The Ultra X7 358H supports only LPDDR5X, also dual-channel, with a recorded memory bandwidth of 153.6 GB/s. ECC memory is not supported on the mobile part.

PCIe connectivity differs substantially. The i9-14900T provides Gen 5 with 16 lanes (CPU only), while the Ultra X7 358H provides Gen 5 with just 4 lanes. The desktop part integrates UHD Graphics 770, whereas the mobile chip integrates Arc B390 graphics. The sockets are entirely different: Intel Socket 1700 for the i9-14900T versus Intel BGA 2540 for the Ultra X7 358H.

The TDP figures reflect their market segments: 35 W for the desktop i9-14900T and 25 W for the mobile Ultra X7 358H. The i9-14900T launched on 2024-01-07 with a launch MSRP of $549. The Ultra X7 358H has a release date of 2026-01-04 and no recorded launch MSRP.

FAQ

Q: Which processor has a higher boost clock?

A: The Intel Core i9-14900T boosts to 5.50 GHz, while the Intel Core Ultra X7 358H boosts to 4.80 GHz.

Q: How much larger is the L3 cache on the i9-14900T?

A: The i9-14900T has 36 MB of shared L3 cache, exactly double the 18 MB on the Ultra X7 358H.

Q: Does the Ultra X7 358H support ECC memory?

A: No, the Ultra X7 358H does not support ECC memory, while the i9-14900T does.

Q: What are the core and thread counts for each processor?

A: The i9-14900T has 24 cores and 32 threads. The Ultra X7 358H has 16 cores and 16 threads, with no hyper-threading.

Q: Which chip wins in PassMark floating point math?

A: The Ultra X7 358H wins with a score of 103842, which is 10.7% higher than the i9-14900T's 92699.

Q: What is the memory bandwidth of the Ultra X7 358H?

A: The Ultra X7 358H has a recorded memory bandwidth of 153.6 GB/s over its dual-channel LPDDR5X bus.

Specification Differences

| Specification | Intel Core i9-14900T | Intel Core Ultra X7 358H |

|---------------|----------------------|--------------------------|

| Series | Core 14th Gen | Core Ultra Series 3 |

| Cores | 24 | 16 |

| Threads | 32 | 16 |

| Base Clock | 1.10 GHz | 1.90 GHz |

| Boost Clock | 5.50 GHz | 4.80 GHz |

| TDP | 35 W | 25 W |

| Socket | Intel Socket 1700 | Intel BGA 2540 |

| Codename | Raptor Lake-R | Panther Lake |

| Generation | Core i9 (Raptor Lake Refresh) | Ultra X7 (Panther Lake-H) |

| Process Node | 10 nm | 3 nm |

| Die Size | 257 mm² | Not recorded |

| L1 Cache | 80 KB (per core) | 192 KB (per core) |

| L2 Cache | 2 MB (per core) | 3 MB (per core) |

| L3 Cache | 36 MB (shared) | 18 MB (shared) |

| Memory Support | DDR4, DDR5 | LPDDR5X |

| Memory Bandwidth | Not recorded | 153.6 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 5, 16 Lanes | Gen 5, 4 Lanes |

| Integrated Graphics | UHD Graphics 770 | Arc B390 |

| Market Segment | Desktop | Mobile |

| Release Date | 2024-01-07 | 2026-01-04 |

| Launch MSRP | $549 | Not recorded |

| Part Number | SRN3U | SA4RAQ9ET |

The Verdict

The data supports a clear split based on workload type. For multi-core productivity, content creation, and integer-heavy tasks, the Intel Core i9-14900T is the stronger choice. Its 64.3% R23 multi-core lead, 66.2% integer math advantage, and 31.1% data compression edge are decisive. The 24-core, 32-thread configuration with 36 MB L3 cache and a 5.50 GHz boost clock delivers the highest multi-threaded scores in this comparison.

For mobile deployments where power efficiency and specialized instruction throughput matter, the Ultra X7 358H presents compelling advantages. Its 51.3% lead in prime number finding, 25.7% physics advantage, and 13.3% extended instructions edge suggest that certain scientific and simulation workloads will run faster on this chip. The 3 nm process node and larger per-core caches (192 KB L1, 3 MB L2) indicate architectural efficiency that offsets its lower clock speed and absence of hyper-threading.

The i9-14900T also holds a 2.5% lead in Cinebench R15 multi-core and a 7.2% lead in PassMark multithread, but the Ultra X7 358H counters with a 2.6% PassMark single-thread win. The overall percentile rankings place the i9-14900T at 90th versus 87th for the Ultra X7 358H, with average benchmark scores of 51015 and 40967 respectively.

The choice between these two comes down to platform and workload. The desktop i9-14900T with Socket 1700, 16 PCIe Gen 5 lanes, DDR4/DDR5 support, and ECC capability suits workstation builds requiring maximum throughput. The mobile Ultra X7 358H with BGA 2540, 4 PCIe Gen 5 lanes, LPDDR5X memory at 153.6 GB/s, and 25 W TDP fits compact systems where the recorded performance in physics, floating point, and prime number workloads is prioritized.