Intel Core i9-14900KS vs Intel Core Ultra 9 386H Comparison

FAQ

Q: What is the primary market segment for each processor?

A: The Intel Core i9-14900KS is a Desktop processor using Intel Socket 1700, while the Intel Core Ultra 9 386H is a Mobile processor using Intel BGA 2540.

Q: How do the core and thread counts differ between the two?

A: The Core i9-14900KS has 24 cores and 32 threads. The Core Ultra 9 386H has 16 cores and 16 threads, meaning it lacks Hyper-Threading.

Q: Which processor has the higher boost clock speed?

A: The Core i9-14900KS boosts up to 6.20 GHz, compared to the Core Ultra 9 386H's 4.90 GHz. The base clocks are 3.20 GHz and 2.10 GHz, respectively.

Q: What is the difference in process node technology?

A: The Core i9-14900KS uses Intel's 10 nm process, while the Core Ultra 9 386H is built on Intel's 3 nm process.

Q: Does the Core Ultra 9 386H support ECC memory?

A: No. ECC memory is supported on the Core i9-14900KS, but the Core Ultra 9 386H does not support ECC.

Q: Which CPU has a larger L3 cache?

A: The Core i9-14900KS has 36 MB of shared L3 cache, while the Core Ultra 9 386H has 18 MB of shared L3 cache.

Architecture Differences

The two processors represent fundamentally different Intel design philosophies. The Intel Core i9-14900KS is a desktop flagship built on the Raptor Lake architecture, specifically the Raptor Lake-R refresh. It uses a 10 nm process node with a die size of 257 mm². The Core Ultra 9 386H, by contrast, is a mobile part based on Panther Lake architecture, fabricated on Intel's 3 nm node. This process advantage allows the mobile chip to achieve higher transistor density despite its smaller physical footprint.

Core organization differs sharply. The Core i9-14900KS delivers 24 cores and 32 threads, a hybrid design that relies on a substantial thread count for parallel workloads. The Core Ultra 9 386H offers 16 cores and 16 threads, with no multithreading per core. This means the desktop part can process more concurrent threads, which directly impacts multi-threaded benchmark results.

Cache hierarchies also diverge. The Core i9-14900KS has 80 KB of L1 cache per core and 2 MB of L2 per core, plus 36 MB of shared L3. The Core Ultra 9 386H has larger per-core allocations: 192 KB L1 per core and 2.5 MB L2 per core, but only 18 MB of shared L3. The mobile chip's larger per-core cache helps with single-thread efficiency, while the desktop chip's larger shared pool benefits multi-core throughput.

Memory support separates them further. The Core i9-14900KS supports both DDR4 and DDR5 with a dual-channel bus. The Core Ultra 9 386H supports DDR5 and LPDDR5X, also dual-channel, and has a recorded memory bandwidth of 115.2 GB/s. The desktop part does not have a listed memory bandwidth figure in the database.

PCIe lane counts differ: the Core i9-14900KS provides 16 CPU-only Gen 5 lanes, while the Core Ultra 9 386H provides 12. Integrated graphics also differ, with UHD Graphics 770 on the desktop chip versus Intel Xe3 Graphics on the mobile chip.

The multiplier is unlocked on the Core i9-14900KS, allowing overclocking. The Core Ultra 9 386H has a locked multiplier. The desktop part is also factory-rated at a 150 W TDP, while the mobile part sips just 25 W, a sixfold difference in thermal design power.

Where Each One Wins

The Core i9-14900KS dominates nearly every benchmark category in the head-to-head data. It wins 16 of the 17 recorded comparisons. The largest victories come in multi-threaded and single-threaded rendering. In Cinebench R23 multicore, the desktop chip scores 50995 versus 20547, a 148.2% lead. In Cinebench R23 singlecore, it scores 7199 versus 2071.5, a 247.5% advantage. This makes it the clear choice for content creation, 3D rendering, video encoding, and any workload that scales with both core count and clock speed.

The Core i9-14900KS also excels in integer math, scoring 212644 versus 87284, a 143.6% margin. Data compression shows a 128% advantage, with 803368 versus 352365. Random string sorting follows at 113.1% (89789 versus 42135). These results indicate strong performance in database operations, file compression, and general productivity tasks that rely on integer arithmetic.

The Core Ultra 9 386H has exactly one win: PassMark find prime numbers, where it scores 341 versus 244, a 28.4% margin. This suggests the mobile chip's newer architecture and larger per-core caches give it an edge in certain single-threaded mathematical operations, specifically prime number finding. The benchmark result indicates that for this narrow algorithmic task, the 3 nm Panther Lake design outperforms the older Raptor Lake architecture.

For mobile users, the Core Ultra 9 386H still delivers respectable scores. Its PassMark multithread score of 35399 and Cinebench R23 multicore of 20547 are strong for a 25 W mobile part. The Core i9-14900KS, with its 150 W TDP, is not designed for battery-powered devices; the mobile chip's efficiency and integration into BGA 2540 laptops is its primary advantage, even if raw benchmark numbers favor the desktop part.

Specification Differences

| Specification | Intel Core i9-14900KS | Intel Core Ultra 9 386H |

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

| Cores | 24 | 16 |

| Threads | 32 | 16 |

| Base Clock | 3.20 GHz | 2.10 GHz |

| Boost Clock | 6.20 GHz | 4.90 GHz |

| TDP | 150 W | 25 W |

| Socket | Intel Socket 1700 | Intel BGA 2540 |

| Architecture | Raptor Lake | Panther Lake |

| Process Node | 10 nm | 3 nm |

| Die Size | 257 mm² | Not listed |

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

| L2 Cache | 2 MB (per core) | 2.5 MB (per core) |

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

| Memory Support | DDR4, DDR5 | DDR5, LPDDR5X |

| Memory Bus | Dual-channel | Dual-channel |

| Memory Bandwidth | Not listed | 115.2 GB/s |

| ECC Memory | Yes | No |

| PCIe | Gen 5, 16 Lanes (CPU only) | Gen 5, 12 Lanes (CPU only) |

| Integrated Graphics | UHD Graphics 770 | Intel Xe3 Graphics |

| Market Segment | Desktop | Mobile |

| Release Date | 2024-03-13 | 2026-01-04 |

| Launch MSRP | $689 | Not listed |

| Multiplier Unlocked | Yes | No |

| Part Number | SRN7R | SA4R5Q9EH |

The specification table reveals a clear generational split. The Core i9-14900KS is a high-power desktop part with more cores, higher clocks, and a larger L3 cache. The Core Ultra 9 386H is a low-power mobile part with a smaller core count but a more advanced 3 nm process and larger per-core caches. The memory bandwidth figure of 115.2 GB/s is unique to the mobile chip, while the desktop part does not have a recorded bandwidth in the database.

Head-to-Head Benchmarks

The benchmark data shows a lopsided contest. In Cinebench R23 multicore, the Core i9-14900KS delivers 50995 points against the Core Ultra 9 386H's 20547, a 148.2% delta. This is the second-largest margin in the head-to-head set. The largest is Cinebench R23 singlecore, where the desktop chip scores 7199 versus 2071.5, a staggering 247.5% advantage. These Cinebench results confirm that the Core i9-14900KS is in a different performance class for both threaded and single-threaded CPU rendering.

Cinebench R20 tells a similar story. Multicore results show 21417 versus 12820, a 67.1% lead. Singlecore results show 3023 versus 1809, also 67.1%. The R15 version shows 5140 versus 3223 for multicore (59.5%) and 725 versus 303.5 for singlecore (138.9%). The singlecore delta in R15 is notable because it exceeds the R20 margin, indicating that the 6.20 GHz boost clock provides a larger relative advantage in older benchmark versions.

PassMark tests reveal where the desktop chip's raw compute power shines. Integer math shows 212644 versus 87284, a 143.6% margin. Data compression scores 803368 versus 352365, a 128% lead. Random string sorting shows 89789 versus 42135, a 113.1% advantage. Floating point math gives 153975 versus 108527, a 41.9% margin. Data encryption shows 47717 versus 27150, a 75.8% lead. Extended instructions score 45524 versus 29138, a 56.2% advantage.

The PassMark multithread test shows 60012 versus 35399, a 69.5% margin. Physics scores 3381 versus 3028, an 11.7% lead, which is the smallest victory for the desktop chip. Single-thread results show 4815 versus 4218, a 14.2% margin. This single-thread delta is modest compared to the Cinebench singlecore margins, suggesting that the PassMark single-thread test is less sensitive to clock speed differences.

The Core Ultra 9 386H's sole win is PassMark find prime numbers, where it scores 341 versus 244, a 28.4% advantage. This result is anomalous relative to the other tests, which all favor the desktop part by double-digit percentages. The data indicates that the Panther Lake architecture's per-core cache configuration and newer instruction handling give it a specific advantage in prime number computations, a workload that is highly dependent on memory latency and branch prediction efficiency.

Overall, the Core i9-14900KS wins 16 benchmarks, and the Core Ultra 9 386H wins 1. The average benchmark score for the desktop chip is 81127, placing it in the 96th percentile of all CPUs. The mobile chip averages 43210, placing it in the 88th percentile. The desktop part's nearest rivals include the Intel Xeon w5-3535X and AMD Ryzen 9 8940HX, both with average scores near 81100. The mobile chip's nearest rivals are the AMD Ryzen AI Max PRO 385 and AMD Ryzen AI 9 465, with average scores near 43300. These percentile and rival data points underscore that the Core i9-14900KS competes at the top of the desktop hierarchy, while the Core Ultra 9 386H sits slightly lower in the overall CPU distribution despite its modern process node.