Intel Core i7-14700HX vs Intel Core Ultra X9 388H Comparison

The Verdict

The Intel Core i7-14700HX and Intel Core Ultra X9 388H are both strong mobile processors, but they serve different priorities. The i7-14700HX is the clear multi-threaded workhorse: it wins Cinebench R23 multi-core by 30.1% (24595 vs 18911) and PassMark integer math by 44.5% (131296 vs 90882). If your workload is heavily threaded rendering, compiling, or number-crunching with integer operations, the i7-14700HX is the pick.

The Core Ultra X9 388H wins 12 of the 17 head-to-head tests, but its victories are concentrated in single-thread and specialized instruction areas. It takes Cinebench R23 single-core by 4.4% (2200.5 vs 2103), PassMark single-thread by 7.8% (4280 vs 3947), and shows massive leads in prime number finding (358 vs 165, a 53.9% advantage) and physics (3226 vs 2252, a 30.2% advantage). For users who prioritize snappy single-core response, encryption, floating-point math, or extended instruction throughput, the Ultra X9 388H is the better choice.

There is a structural trade-off. The i7-14700HX has 20 cores and 28 threads versus 16 cores and 16 threads for the Ultra X9 388H, but the Ultra X9 388H runs on a 3 nm process versus the i7's 10 nm node, with a much lower 25 W TDP versus 55 W. The database shows the i7-14700HX sits at the 89th percentile of all CPUs, while the Ultra X9 388H is at the 88th, so overall they are close in the broader landscape. Pick the i7-14700HX for sustained multi-core throughput and integer-heavy work; pick the Ultra X9 388H for efficiency, single-core responsiveness, and specialized math workloads.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core i7-14700HX has 20 cores and 28 threads. The Intel Core Ultra X9 388H has 16 cores and 16 threads. The i7-14700HX also offers a higher boost clock of 5.50 GHz versus 5.10 GHz, though both have the same 2.10 GHz base clock.

Q: Which CPU is faster in Cinebench R23 multi-core?

A: The Intel Core i7-14700HX wins decisively, scoring 24595 versus 18911 for the Ultra X9 388H. That is a 30.1% lead, making the i7-14700HX the stronger choice for heavily threaded rendering or encoding tasks.

Q: Does the Core Ultra X9 388H win any multi-core tests?

A: Yes, but by slim margins. In Cinebench R20 multi-core, the Ultra X9 388H scores 13101 versus 13059 for the i7-14700HX, a 0.3% edge. In PassMark multithread, it scores 36811 versus 36566, a 0.7% edge. The i7-14700HX dominates the heavier Cinebench R23 multi-core test.

Q: Which CPU has better single-core performance?

A: The Intel Core Ultra X9 388H wins every single-core test in the database. It leads by 4.4% in Cinebench R23 single-core (2200.5 vs 2103), 7.8% in PassMark single-thread (4280 vs 3947), and 4.4% in Cinebench R15 single-core (309.5 vs 296). This makes it the better choice for lightly threaded tasks.

Q: How do the memory support and integrated graphics differ?

A: The i7-14700HX supports DDR4 and DDR5 memory with dual-channel bus, while the Ultra X9 388H supports only LPDDR5X memory with a dual-channel bus and a recorded bandwidth of 153.6 GB/s. The i7-14700HX has UHD Graphics 770 integrated, while the Ultra X9 388H has Arc B390 integrated graphics. The i7-14700HX also supports ECC memory, which the Ultra X9 388H does not.

Q: Which processor is more power-efficient?

A: Based on the recorded TDP values, the Intel Core Ultra X9 388H has a 25 W TDP versus 55 W for the i7-14700HX. The Ultra X9 388H also uses a smaller 3 nm process node versus 10 nm for the i7-14700HX, which aligns with its lower power envelope.

Architecture Differences

The two processors come from different Intel architectures. The Intel Core i7-14700HX is based on Raptor Lake, specifically the Raptor Lake-HX refresh, part of the Core 14th Gen series. It uses a 10 nm process node with a die size of 257 mm². The Intel Core Ultra X9 388H is built on Panther Lake, part of the Core Ultra Series 3, using a 3 nm process node. The die size for the Ultra X9 388H is not recorded in the database.

Cache organization differs substantially. The i7-14700HX has 80 KB of L1 cache per core, 2 MB of L2 cache per core, and 33 MB of shared L3 cache. The Ultra X9 388H has 192 KB of L1 cache per core, 3 MB of L2 cache per core, but only 18 MB of shared L3 cache. This means the Ultra X9 388H has larger per-core caches, while the i7-14700HX has a much larger shared L3 pool.

Memory and I/O architecture also separate them. The i7-14700HX supports both DDR4 and DDR5 memory, has ECC support, and offers PCIe Gen 5 with 16 lanes (CPU only). The Ultra X9 388H supports only LPDDR5X memory, has no ECC support, and offers PCIe Gen 5 with just 4 lanes (CPU only). The Ultra X9 388H has a recorded memory bandwidth of 153.6 GB/s, while the i7-14700HX has no bandwidth figure in the database.

The integrated graphics are different as well. The i7-14700HX uses UHD Graphics 770, while the Ultra X9 388H uses Arc B390. The Ultra X9 388H is a newer design with a more advanced process node, but it also has fewer cores and threads. The i7-14700HX has an unlocked multiplier, while the Ultra X9 388H does not. Both processors are marked as Active in production and target the Mobile market segment.

Specification Differences

The core counts differ significantly: the i7-14700HX has 20 cores and 28 threads, while the Ultra X9 388H has 16 cores and 16 threads. Both share a 2.10 GHz base clock, but the boost clock favors the i7-14700HX at 5.50 GHz versus 5.10 GHz for the Ultra X9 388H.

Power and packaging are distinct. The i7-14700HX has a 55 W TDP and uses the Intel BGA 1964 socket. The Ultra X9 388H has a 25 W TDP and uses the Intel BGA 2540 socket. The process nodes differ sharply: 10 nm for the i7-14700HX versus 3 nm for the Ultra X9 388H, with the i7-14700HX having a recorded die size of 257 mm².

Cache and memory specifications diverge. The i7-14700HX has 80 KB L1 per core, 2 MB L2 per core, and 33 MB shared L3. The Ultra X9 388H has 192 KB L1 per core, 3 MB L2 per core, and 18 MB shared L3. Memory support differs: the i7-14700HX accepts DDR4 and DDR5, while the Ultra X9 388H only accepts LPDDR5X. ECC memory is supported on the i7-14700HX but not on the Ultra X9 388H.

PCIe and graphics also differ. The i7-14700HX has Gen 5 PCIe with 16 lanes (CPU only), while the Ultra X9 388H has Gen 5 PCIe with 4 lanes (CPU only). Integrated graphics are UHD Graphics 770 on the i7-14700HX versus Arc B390 on the Ultra X9 388H. The i7-14700HX has an unlocked multiplier, while the Ultra X9 388H is locked. The release dates are recorded as 2024-01-07 for the i7-14700HX and 2026-01-04 for the Ultra X9 388H.

Head-to-Head Benchmarks

The head-to-head data shows a clear split between multi-threaded wins for the i7-14700HX and single-thread and specialized wins for the Ultra X9 388H. The i7-14700HX wins 5 tests; the Ultra X9 388H wins 12.

The biggest win for the i7-14700HX is in PassMark integer math, where it scores 131296 versus 90882, a 44.5% advantage. This is its largest lead in any test. In Cinebench R23 multi-core, the i7-14700HX scores 24595 versus 18911, a 30.1% lead. In Cinebench R15 multi-core, it scores 3812 versus 2955, a 29% lead. PassMark data compression also favors the i7-14700HX by 21.2% (438539 vs 361763), and random string sorting by 10.3% (48544 vs 44010).

The Ultra X9 388H has its largest win in PassMark find prime numbers, scoring 358 versus 165, a 53.9% advantage. It also wins PassMark physics by 30.2% (3226 vs 2252) and floating-point math by 16.6% (112550 vs 93836). In extended instructions, it leads by 14.1% (29943 vs 25718). Data encryption favors the Ultra X9 388H by 8.4% (28490 vs 26092). Single-thread tests all go to the Ultra X9 388H: 7.8% in PassMark single-thread (4280 vs 3947) and 4.4% in both Cinebench R23 single-core (2200.5 vs 2103) and Cinebench R15 single-core (309.5 vs 296).

The Cinebench R20 results are nearly tied. The Ultra X9 388H wins multi-core by 0.3% (13101 vs 13059) and single-core by 0.3% (1849 vs 1843). PassMark multithread is also close, with the Ultra X9 388H ahead by 0.7% (36811 vs 36566). These margins are negligible in real-world use.

The overall database picture shows the i7-14700HX with an average benchmark score of 45953 and a percentile of 89, while the Ultra X9 388H has an average score of 44466 and a percentile of 88. Nearest rivals for the i7-14700HX include the AMD EPYC 7303 and EPYC 4364P with matching scores, and the AMD Ryzen AI 9 HX 375 and Intel Core Ultra 5 235 at 0.2% lower. The Ultra X9 388H sits near the AMD Ryzen 5 7500X3D (0.2% lower) and Intel Core i9-13950HX (0.3% lower), among others.

Where Each One Wins

The Intel Core i7-14700HX is the choice for multi-threaded productivity that relies on integer math and data compression. Its 44.5% lead in PassMark integer math and 21.2% lead in data compression indicate strength in tasks like code compilation, database operations, and archival work. The 30.1% win in Cinebench R23 multi-core points to strong performance in 3D rendering and video encoding. The 29% lead in Cinebench R15 multi-core and 10.3% lead in random string sorting reinforce this profile. Users with threaded workloads that hammer the CPU for long periods will get more throughput from the i7-14700HX, despite its higher 55 W TDP.

The Intel Core Ultra X9 388H is the pick for single-thread responsiveness and specialized math. Its 7.8% lead in PassMark single-thread and 4.4% lead in Cinebench R23 single-core mean faster day-to-day interaction in lightly threaded apps. The 53.9% lead in prime number finding suggests a major advantage in cryptographic or numerical search workloads. The 30.2% lead in physics tests and 16.6% lead in floating-point math make it suitable for simulation and scientific computing that uses floating-point operations. The 14.1% lead in extended instructions and 8.4% lead in data encryption point to strength in security and vectorized code. The 25 W TDP and 3 nm process also make it the more efficiency-oriented option for thin-and-light laptops, though the database does not record battery life or thermals.

For a mixed workload, the tie is close: Cinebench R20 multi-core differs by only 0.3%, and PassMark multithread by 0.7%. Neither processor has a meaningful advantage in these tests. The deciding factor should be the specific application mix. Integer-heavy, multi-threaded production work favors the i7-14700HX. Single-thread, floating-point, or encryption-heavy work favors the Ultra X9 388H. The i7-14700HX also offers ECC memory and DDR4/DDR5 flexibility, while the Ultra X9 388H offers a much lower power draw and newer process node.