Intel Core i9-14900 vs Intel Core i9-14900HX Comparison

The Intel Core i9-14900HX and Intel Core i9-14900 share the same core architecture, cache layout, and boost clock, but they are built for different physical environments. The data shows a clear split: the desktop i9-14900 wins the vast majority of benchmark comparisons, while the mobile i9-14900HX takes specific victories in physics simulation and extended instruction workloads. The 14900HX is a 55W mobile part in a BGA package, while the 14900 is a 65W desktop chip on Socket 1700. This distinction in power delivery and thermal headroom explains most of the performance delta, though the HX still manages to claim a few notable wins.

Where Each One Wins

The Intel Core i9-14900 dominates the head-to-head benchmark suite, taking 16 of 19 comparisons. Its wins span the full range of Cinebench tests, Geekbench, and most Passmark workloads. The largest margins come in integer math, where the desktop part scores 175010 against the HX's 157375, a 10.1% advantage. Floating point math also favors the desktop part by 6.6%, with scores of 120262 and 112273 respectively. In single-threaded performance, the 14900 leads by 3.4% in Passmark single-thread (4323 vs 4175) and by 6.4% in Geekbench single-core (2488 vs 2330). These results indicate that sustained power delivery on desktop allows the 14900 to maintain higher clocks under load.

The Intel Core i9-14900HX wins three specific tests, and they are revealing. It takes Passmark physics with a score of 2638 versus 2486, a 6.1% advantage. It also wins extended instructions (31247 vs 30624) and prime number finding (193 vs 188). These are workloads that respond to the HX's different power curve and possibly its mobile-optimized scheduling. The physics win is particularly interesting because it suggests the HX can outperform the desktop chip in certain latency-sensitive or burst-oriented tasks despite losing most other multi-threaded tests. The overall picture is that the desktop 14900 is the stronger general-purpose processor, but the HX has niche strengths in specific computational patterns.

Architecture Differences

Both processors are built on Intel's Raptor Lake architecture, with the same 10 nm process node and a die size of 257 mm². They both feature 24 cores and 32 threads, with an identical cache hierarchy: 80 KB L1 per core, 2 MB L2 per core, and 36 MB shared L3. The codenames differ — Raptor Lake-HX for the mobile part and Raptor Lake-R for the desktop — but the underlying silicon is fundamentally the same design. Both support DDR4 and DDR5 memory in dual-channel configuration, and both include ECC memory support and UHD Graphics 770 integrated graphics.

The critical differences are in packaging and power. The 14900HX uses Intel BGA 1964, a socket designed for soldered mobile installation, while the 14900 uses Intel Socket 1700 for desktop builds. The HX has a base clock of 2.20 GHz and a TDP of 55W, while the desktop part has a lower base clock of 2.00 GHz but a higher TDP of 65W. Both boost to 5.80 GHz. The multiplier is unlocked on the HX but locked on the 14900, meaning the mobile chip offers overclocking flexibility that the desktop part lacks. The HX also has a different part number (SRMXF versus SRN3V) and is classified under the "Raptor Lake-HX Refresh" generation, while the desktop is the "Raptor Lake Refresh."

Despite the TDP difference, the desktop part's higher power envelope allows it to sustain higher average clocks in multi-threaded workloads. The HX's lower TDP is offset by its higher base clock, but in practice, the desktop chip's thermal headroom wins out in most sustained benchmarks. Both are active production parts released on the same date, January 7, 2024, and both are in the 91st and 92nd percentiles of all CPUs respectively.

The Verdict

The data positions the Intel Core i9-14900 as the faster processor in the majority of scenarios. Its average benchmark score is 58115, compared to 56004 for the HX, and it sits at the 92nd percentile of all CPUs versus the HX's 91st. In multi-core Cinebench R23, the desktop part scores 31070 against the HX's 30055, a 3.3% lead. Geekbench multi-core shows a 5.3% gap (18495 vs 17511). The desktop part also leads in data compression (550271 vs 539965) and data encryption (33540 vs 32619). For users building a desktop system, the 14900 is the clear choice based on raw performance.

However, the HX is not without its arguments. Its 6.1% win in Passmark physics suggests it handles certain real-time or frame-based calculations better, which could matter for specific simulation or game-physics scenarios. Its wins in extended instructions and prime number finding also indicate that some vectorized or integer-heavy workloads run slightly better on the mobile chip. The HX also has an unlocked multiplier, which the desktop part lacks, giving it overclocking potential that could narrow the gap in tuned systems. Additionally, the HX's lower 55W TDP makes it suitable for high-performance laptops where power efficiency is a constraint.

The decision comes down to platform. The 14900HX is a mobile-only processor, soldered to a motherboard, and cannot be used in a desktop. The 14900 is a desktop chip that requires a Socket 1700 motherboard. If you are choosing between a laptop and a desktop, the performance data shows the desktop part is about 3-6% faster in most multi-threaded workloads, but the HX holds its own in physics and extended instruction tests. The desktop 14900 has a launch MSRP of $549, while the HX has no listed MSRP.

FAQ

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

A: The Intel Core i9-14900 scores 31070, which is 3.3% higher than the 14900HX's 30055.

Q: Does the mobile HX processor win any benchmarks?

A: Yes, the 14900HX wins Passmark physics (2638 vs 2486), extended instructions (31247 vs 30624), and find prime numbers (193 vs 188).

Q: Are the cache sizes different between the two?

A: No, both have 80 KB L1 per core, 2 MB L2 per core, and 36 MB shared L3.

Q: What is the TDP difference?

A: The 14900HX has a 55W TDP, while the 14900 has a 65W TDP.

Q: Which chip has an unlocked multiplier?

A: The Intel Core i9-14900HX has an unlocked multiplier; the 14900 is locked.

Q: Do they support the same memory types?

A: Yes, both support DDR4 and DDR5 in dual-channel configuration, and both support ECC memory.

Head-to-Head Benchmarks

The largest single win for the desktop part comes in Passmark integer math, where the 14900 scores 175010 against the HX's 157375 — a 10.1% gap. This is a substantial margin that reflects sustained multi-core integer throughput. Floating point math follows with a 6.6% delta (120262 vs 112273). Geekbench single-core shows a 6.4% lead for the desktop (2488 vs 2330), which is notable because single-core performance is often less dependent on power headroom. The Cinebench R15 multi-core test shows a 4.6% gap (4793 vs 4574), while R20 multi-core is closer at 1.8% (15910 vs 15616). Passmark multi-thread shows a 1.8% delta (44578 vs 43778), and data compression is 1.9% apart (550271 vs 539965).

The HX's wins are smaller in number but not insignificant. The physics test shows a 6.1% advantage (2638 vs 2486), which is the HX's largest margin. Prime number finding gives the HX a 2.7% win (193 vs 188), and extended instructions are 2% ahead (31247 vs 30624). These are the only three tests where the mobile chip comes out ahead, and they suggest that the HX's power management can actually benefit certain short-burst or latency-sensitive workloads. The random string sorting test is essentially a tie, with the desktop part winning by only 0.3% (61060 vs 60861). Overall, the data shows 16 wins for the desktop and 3 for the mobile, with the desktop's average lead across all tests being roughly 3-4%.

Specification Differences

The two processors differ in several key fields. The base clock is higher on the HX at 2.20 GHz versus 2.00 GHz on the desktop part. The TDP is lower on the HX at 55W versus 65W. The socket is completely different: Intel BGA 1964 for the HX and Intel Socket 1700 for the desktop. The market segment is Mobile for the HX and Desktop for the 14900. The multiplier is unlocked on the HX but locked on the 14900. The part numbers are SRMXF and SRN3V respectively. The codenames differ as Raptor Lake-HX and Raptor Lake-R. The generation descriptions also differ, with the HX listed as "Core i9 (Raptor Lake-HX Refresh)" and the desktop as "Core i9 (Raptor Lake Refresh)." The launch MSRP is only listed for the desktop part at $549, with no MSRP for the HX. All other specifications — cores, threads, boost clock, cache, memory support, PCIe lanes, integrated graphics, process node, foundry, die size, and release date — are identical between the two.