Intel Core i7-14700 vs Intel Core Ultra X9 378H Comparison

The Intel Core i7-14700 and the Intel Core Ultra X9 378H represent two distinct approaches to processor design, one aimed at desktop workloads and the other at mobile efficiency. The recorded data shows a clear division of labor: the i7-14700 dominates in integer-heavy and data-management tasks, while the Ultra X9 378H excels in floating-point operations and single-threaded responsiveness. With 16 head-to-head benchmark comparisons, the Ultra X9 378H claims 10 wins against 7 for the i7-14700, yet the i7-14700 secures its victories by large margins in several key tests.

Where Each One Wins

The i7-14700 establishes its strongest territory in tasks that rely on raw integer throughput and memory bandwidth for large datasets. The data shows a 66.9% lead in Passmark integer math, the largest single delta between the two processors. It also wins Passmark data compression by 28.9% and random string sorting by 21.7%, indicating a distinct advantage in file archiving, database operations, and other workloads that manipulate large blocks of structured data. Multithreaded performance also favors the desktop chip, with a 5.3% lead in Passmark multithread and a 5.2% lead in Cinebench R20 multicore.

The Ultra X9 378H, in contrast, wins nearly all single-threaded and floating-point comparisons. Its most striking result is a 54.7% lead in Cinebench R23 singlecore, followed by a 35.3% lead in Cinebench R15 singlecore. The mobile chip also dominates Passmark physics by 34.6% and prime number finding by 54.1%, tasks that benefit from high per-core efficiency and advanced instruction handling. Floating-point math favors the Ultra X9 378H by 6.8%, and extended instructions by 9.3%. These results position the mobile processor as the stronger choice for scientific computation, physics simulation, and applications that scale with single-core speed rather than core count.

Architecture Differences

The two processors diverge fundamentally in their underlying design. The i7-14700 uses the Raptor Lake architecture on a 10 nm process node, while the Ultra X9 378H uses the Panther Lake codename on a 3 nm process node. Both are manufactured by Intel, but the process difference explains much of the performance split: the smaller node enables higher single-core efficiency in the mobile chip.

Core counts also differ significantly. The i7-14700 provides 20 cores and 28 threads, while the Ultra X9 378H provides 16 cores and 16 threads. The desktop chip relies on hyperthreading to reach its thread count, while the mobile chip does not. Cache hierarchies reflect the different design goals. The i7-14700 offers 80 KB of L1 per core, 2 MB of L2 per core, and 33 MB of shared L3. The Ultra X9 378H provides 192 KB of L1 per core, 2.5 MB of L2 per core, but only 18 MB of shared L3. The larger per-core caches in the mobile chip support its single-threaded strengths, while the larger shared L3 in the desktop chip helps with multithreaded data sharing.

Memory support differs entirely. The i7-14700 accepts DDR4 and DDR5 in a dual-channel configuration and supports ECC memory. The Ultra X9 378H supports only LPDDR5X, also dual-channel, with a recorded memory bandwidth of 153.6 GB/s, but no ECC support. PCIe connectivity also differs: the desktop chip offers 16 Gen 5 lanes from the CPU, while the mobile chip offers only 4 Gen 5 lanes. Integrated graphics differ as well, with the i7-14700 using UHD Graphics 770 and the Ultra X9 378H using Arc B390.

Head-to-Head Benchmarks

The largest win for the i7-14700 comes in Passmark integer math, where it scores 154535 against 92603, a 66.9% advantage. This result confirms the desktop chip's strength in general-purpose arithmetic and logic operations. In Passmark data compression, the i7-14700 scores 498198 against 386591, a 28.9% lead, and in random string sorting it scores 54340 against 44648, a 21.7% lead. Cinebench R15 multicore also favors the desktop chip by 23.8%, with scores of 4061 against 3281.

The Ultra X9 378H responds with decisive wins in single-threaded tests. Its Cinebench R23 singlecore score of 4595 against 2080 represents a 54.7% lead, the largest margin in the entire comparison. Cinebench R15 singlecore shows a 35.3% lead at 462 against 299. Passmark find prime numbers favors the mobile chip by 54.1%, with scores of 357 against 164. Passmark physics shows a 34.6% lead for the Ultra X9 378H, scoring 3404 against 2226.

Several tests show more moderate deltas. Cinebench R20 multicore gives the i7-14700 a 5.2% lead, and Cinebench R20 singlecore gives it a 5.3% lead. Passmark multithread also shows a 5.3% lead for the desktop chip at 40318 against 38298. The Ultra X9 378H leads by 9.3% in extended instructions, 6.8% in floating-point math, and 4.9% in Passmark single-thread. The narrowest margin is Passmark data encryption, where the Ultra X9 378H wins by 0.8% at 29840 against 29601.

FAQ

Q: Which processor has the higher average benchmark score?

A: The i7-14700 records an average benchmark score of 52301, while the Ultra X9 378H records 47468. The desktop chip also holds a 91st percentile ranking against all CPUs, compared to 89th for the mobile chip.

Q: How do the core and thread counts compare?

A: The i7-14700 has 20 cores and 28 threads, while the Ultra X9 378H has 16 cores and 16 threads. The desktop chip uses hyperthreading; the mobile chip does not.

Q: What are the clock speed differences?

A: The i7-14700 has a base clock of 2.10 GHz and a boost clock of 5.40 GHz. The Ultra X9 378H has a base clock of 2.00 GHz and a boost clock of 5.00 GHz.

Q: Which processor is more efficient in terms of power draw?

A: The Ultra X9 378H has a TDP of 25 watts, while the i7-14700 has a TDP of 65 watts. The mobile chip uses significantly less power according to the recorded specifications.

Q: What memory types does each processor support?

A: The i7-14700 supports DDR4 and DDR5 in dual-channel mode and includes ECC support. The Ultra X9 378H supports only LPDDR5X in dual-channel mode, with a bandwidth of 153.6 GB/s, and does not support ECC.

Q: Which processor wins in single-threaded performance?

A: The Ultra X9 378H wins all single-threaded comparisons, including a 54.7% lead in Cinebench R23 singlecore and a 35.3% lead in Cinebench R15 singlecore.

The Verdict

The data points to a clear split based on workload type. The i7-14700 is the stronger choice for multithreaded integer workloads, data compression, and scenarios where large shared L3 cache and high thread counts matter. Its 66.9% lead in integer math and 28.9% lead in data compression make it the better fit for software compilation, database processing, and archival tasks that can utilize its 28 threads. The 5.3% lead in Passmark multithread and 23.8% lead in Cinebench R15 multicore reinforce this position.

The Ultra X9 378H is the better choice for single-threaded and floating-point workloads. Its 54.7% lead in Cinebench R23 singlecore and 35.3% lead in Cinebench R15 singlecore indicate superior per-core performance, likely enabled by its 3 nm process node and larger per-core caches. The 34.6% lead in Passmark physics and 54.1% lead in prime number finding suggest strong performance in scientific and simulation tasks. Its 25-watt TDP also positions it as the more power-efficient option for mobile deployments.

Also consider the nearest rival data. The i7-14700 sits within 0.7% of the AMD Ryzen 9 5950X in average score, while the Ultra X9 378H sits within 0.6% of the Intel Core i9-12900F. Both processors are competitive within their respective performance brackets, but the choice between them depends on whether the workload favors raw multithreaded throughput or single-threaded efficiency.

Specification Differences

The two processors differ in nearly every specification category. The i7-14700 uses 20 cores and 28 threads; the Ultra X9 378H uses 16 cores and 16 threads. Base clocks are 2.10 GHz versus 2.00 GHz, and boost clocks are 5.40 GHz versus 5.00 GHz. TDP differs substantially at 65 watts versus 25 watts. The desktop chip uses Intel Socket 1700; the mobile chip uses Intel BGA 2540.

The architecture and process node show the generational gap. The i7-14700 uses Raptor Lake on a 10 nm node, while the Ultra X9 378H uses Panther Lake on a 3 nm node. Die size is recorded only for the desktop chip at 257 mm². Cache configurations differ: the i7-14700 has 80 KB L1 per core, 2 MB L2 per core, and 33 MB shared L3; the Ultra X9 378H has 192 KB L1 per core, 2.5 MB L2 per core, and 18 MB shared L3.

Memory support is exclusive to each platform. The i7-14700 supports DDR4 and DDR5 with ECC; the Ultra X9 378H supports only LPDDR5X without ECC. Memory bandwidth is recorded only for the mobile chip at 153.6 GB/s. PCIe lanes differ at 16 versus 4 Gen 5 lanes. Integrated graphics are UHD Graphics 770 for the desktop chip and Arc B390 for the mobile chip. The i7-14700 has a launch MSRP of $384; no launch MSRP is recorded for the Ultra X9 378H.