Intel Core i9-14900HX vs Intel Core Ultra 9 285 Comparison

The Verdict

The benchmark database shows a decisive generational shift. The Intel Core Ultra 9 285 sweeps all 17 recorded head-to-head comparisons against the Intel Core i9-14900HX, with no wins recorded for the older mobile flagship. The data indicates the Core Ultra 9 285 is the clear performance leader in every measured workload, from single-threaded responsiveness to heavily parallelized rendering tasks.

The Core i9-14900HX, despite carrying 24 cores and 32 threads, trails by margins that range from 4.5% in PassMark integer math to a massive 68.4% in Cinebench R23 single-core. Its average benchmark score of 56004 places it at the 91st percentile of all CPUs, while the Core Ultra 9 285 achieves an average score of 75488 and the 95th percentile. The nearest rival data confirms the gap: the Core Ultra 9 285 sits within 0.3% of AMD EPYC 8224P, AMD Ryzen 7 PRO 9755X3D, and AMD Ryzen 7 PRO 9755, whereas the Core i9-14900HX trades nearly even with AMD Ryzen AI Max 390 and AMD Ryzen AI 9 HX PRO 470.

The verdict from the data is straightforward: the Core Ultra 9 285 is the superior processor for any user prioritizing raw performance. The Core i9-14900HX remains a capable mobile chip, but its benchmark results place it firmly behind the Arrow Lake desktop part in every category measured.

Where Each One Wins

The Core Ultra 9 285 wins every benchmark category, so the use-case split is defined by the magnitude of its advantages rather than by workload type.

For single-threaded performance, the Core Ultra 9 285 dominates. Its Cinebench R23 single-core score of 6909 is 68.4% higher than the Core i9-14900HX's 2181.5. The PassMark single-thread score of 4881 is 14.5% ahead of 4175. This translates to faster application launches, snappier UI interactions, and better performance in lightly threaded productivity tasks.

For multi-threaded workloads, the Core Ultra 9 285 extends its lead. Cinebench R23 multi-core shows a 38.6% advantage (48945 versus 30055), while Cinebench R20 multi-core shows a 24% gap (20556 versus 15616). PassMark multithread scores 56602 versus 43778, a 22.7% edge. Content creators, compilers, and rendering tasks all favor the Arrow Lake part.

The Core i9-14900HX's only relative strength is its lower TDP of 55 watts compared to 65 watts, which suits thin-and-light mobile designs. However, the benchmark data does not show a single workload where the older chip wins, so its use case is strictly limited to systems where the lower power envelope and mobile socket are mandatory.

Architecture Differences

The two processors come from fundamentally different Intel architectures. The Core i9-14900HX uses Raptor Lake, specifically the Raptor Lake-HX refresh, built on Intel's 10 nm process node. The Core Ultra 9 285 uses Arrow Lake-S, fabricated by TSMC on a 3 nm node. The die size difference is modest: 257 mm² for the mobile part versus 243 mm² for the desktop part, with the latter packing 17,800 million transistors.

Core counts are identical at 24, but thread counts differ. The Core i9-14900HX supports Hyper-Threading, yielding 32 threads, while the Core Ultra 9 285 has 24 threads with no SMT. The Core Ultra 9 285 compensates with higher base and boost clocks: 2.50 GHz base and 5.60 GHz boost, compared to 2.20 GHz and 5.80 GHz respectively. The older chip boosts 200 MHz higher, but the newer architecture's IPC advantage overrides that in every recorded test.

Cache hierarchies also differ. The Core i9-14900HX has 80 KB L1 per core, 2 MB L2 per core, and 36 MB shared L3. The Core Ultra 9 285 has 192 KB L1 per core, 3 MB L2 per core, and also 36 MB shared L3. The Core Ultra 9 285 doubles L1 capacity per core and adds 50% more L2 per core.

Memory support diverges significantly. The Core i9-14900HX supports both DDR4 and DDR5 in dual-channel mode, while the Core Ultra 9 285 supports DDR5 only, with a recorded memory bandwidth of 102.4 GB/s. Both support ECC memory. PCIe connectivity also differs: the mobile chip provides Gen 5 with 16 CPU lanes, while the desktop part provides Gen 5 with 20 CPU lanes.

Integrated graphics are another distinction. The Core i9-14900HX uses UHD Graphics 770, while the Core Ultra 9 285 uses Arc Xe-LPG Graphics 64EU. The sockets are incompatible: Intel BGA 1964 for the mobile chip versus Intel Socket 1851 for the desktop chip. The Core i9-14900HX has an unlocked multiplier, while the Core Ultra 9 285 is locked.

FAQ

Q: Which processor has a higher single-core Cinebench R23 score?

A: The Intel Core Ultra 9 285 scores 6909, which is 68.4% higher than the Intel Core i9-14900HX's 2181.5.

Q: How do the two processors compare in multi-core rendering?

A: The Core Ultra 9 285 leads Cinebench R23 multi-core with 48945 versus 30055, a 38.6% advantage. Cinebench R20 multi-core shows 20556 versus 15616, a 24% lead.

Q: Do both processors have 24 cores?

A: Yes, both have 24 cores. However, the Core i9-14900HX has 32 threads while the Core Ultra 9 285 has 24 threads.

Q: Which processor supports DDR4 memory?

A: Only the Intel Core i9-14900HX supports DDR4 in addition to DDR5. The Core Ultra 9 285 supports DDR5 only.

Q: What is the process node difference?

A: The Core i9-14900HX uses Intel's 10 nm process, while the Core Ultra 9 285 uses a 3 nm process from TSMC.

Q: Are these processors socket-compatible?

A: No. The Core i9-14900HX uses Intel BGA 1964, a mobile socket, while the Core Ultra 9 285 uses Intel Socket 1851 for desktop.

Head-to-Head Benchmarks

The largest single-core margin appears in Cinebench R23 single-core, where the Core Ultra 9 285 scores 6909 against 2181.5, a 68.4% difference. Cinebench R15 single-core shows an even steeper relative gap: 696 versus 310.5, a 55.4% deficit for the Core i9-14900HX. These results indicate a substantial IPC improvement in Arrow Lake.

Multi-core Cinebench results follow the same pattern. Cinebench R23 multi-core gives the Core Ultra 9 285 a 38.6% win (48945 versus 30055). Cinebench R15 multi-core shows a smaller but still clear 7.3% advantage (4933 versus 4574). Cinebench R20 multi-core sits between those extremes at 24% (20556 versus 15616).

PassMark tests reveal where the architectures differ most. Floating point math shows a 42.4% lead for the Core Ultra 9 285 (194988 versus 112273). Prime number finding is 58% faster (459 versus 193). Extended instructions favor the newer chip by 31.1% (45357 versus 31247). Data encryption is 30.5% faster (46949 versus 32619). Data compression is 10.3% ahead (602121 versus 539965). Random string sorting shows a 17.4% edge (73651 versus 60861).

The smallest margin in the entire dataset is PassMark integer math, where the Core Ultra 9 285 scores 164869 against 157375, a 4.5% lead. This suggests that integer-heavy integer workloads see the least benefit from the architectural change, while floating-point and single-threaded tasks gain the most.

PassMark physics shows a 26.7% advantage (3598 versus 2638), and PassMark multithread confirms the pattern with 56602 versus 43778, a 22.7% gap. Single-thread PassMark scores land at 4881 versus 4175, a 14.5% difference.

The aggregate picture is unambiguous. The Core Ultra 9 285 wins every one of the 17 recorded benchmarks, with margins ranging from 4.5% to 68.4%. The Core i9-14900HX's higher boost clock of 5.80 GHz does not translate into a single benchmark win. The data indicates that the 3 nm Arrow Lake architecture, with its larger L1 and L2 caches and higher memory bandwidth, delivers a comprehensive performance upgrade over the 10 nm Raptor Lake mobile design.