Intel Core Ultra 5 245 vs Intel Core Ultra X9 388H Comparison

The Intel Core Ultra 5 245 is a desktop processor built on the Arrow Lake architecture, while the Intel Core Ultra X9 388H is a mobile processor from the Panther Lake family. The database shows a clear performance hierarchy between the two, with the desktop part winning 16 of 17 head-to-head benchmarks. The data indicates that the Core Ultra 5 245 holds a significant lead in most compute tasks, though the mobile chip secures a notable victory in one specific physics workload.

FAQ

Q: Which processor has more cores?

A: The Intel Core Ultra X9 388H has 16 cores, while the Intel Core Ultra 5 245 has 14 cores. Both processors support 14 and 16 threads respectively, meaning neither uses simultaneous multithreading.

Q: What is the difference in average benchmark scores?

A: The Intel Core Ultra 5 245 has an average benchmark score of 48995, while the Intel Core Ultra X9 388H has an average score of 44466. The desktop chip sits at the 90th percentile of all CPUs, compared to the 88th percentile for the mobile chip.

Q: How does the memory bandwidth compare between the two?

A: The Intel Core Ultra X9 388H supports LPDDR5X memory with a bandwidth of 153.6 GB/s, which is higher than the 102.4 GB/s of the DDR5-supporting Intel Core Ultra 5 245.

Q: Which processor has the larger L3 cache?

A: The Intel Core Ultra 5 245 has 24 MB of shared L3 cache, while the Intel Core Ultra X9 388H has 18 MB of shared L3 cache. Both have 192 KB of L1 cache per core and 3 MB of L2 cache per core.

Q: What is the TDP difference between the two chips?

A: The Intel Core Ultra 5 245 has a TDP of 65 watts, while the Intel Core Ultra X9 388H has a TDP of 25 watts. The mobile processor is designed for a significantly lower power envelope.

Q: What are the closest rivals for each processor in the database?

A: The Intel Core Ultra 5 245 is most closely matched by the AMD Ryzen 7 PRO 5755G, with a delta of -0.4%. The Intel Core Ultra X9 388H is most closely matched by the AMD Ryzen 5 7500X3D, with a delta of -0.2%.

Architecture Differences

The two processors come from different architectural families within Intel's Core Ultra lineup. The Intel Core Ultra 5 245 is based on Arrow Lake, specifically the Arrow Lake-S desktop variant, while the Intel Core Ultra X9 388H uses Panther Lake, the Panther Lake-H mobile variant. Both are manufactured on a 3 nm process node, but the foundry differs: TSMC produces the Arrow Lake die, while Intel's own fabs produce the Panther Lake chip.

The core configuration differs despite the similar per-core cache layout. The Core Ultra 5 245 packs 14 cores and 14 threads, whereas the Core Ultra X9 388H has 16 cores and 16 threads. Neither processor implements hyperthreading, so thread counts equal core counts. The L1 and L2 cache sizes are identical at 192 KB per core and 3 MB per core respectively, but the shared L3 cache favors the desktop part at 24 MB versus 18 MB.

The memory subsystem shows a clear split. The desktop chip uses DDR5 memory over a dual-channel bus with a bandwidth of 102.4 GB/s and supports ECC memory. The mobile chip uses LPDDR5X memory, also dual-channel, but achieves a higher bandwidth of 153.6 GB/s and lacks ECC support. PCIe connectivity also differs substantially: the Core Ultra 5 245 provides 20 CPU lanes of Gen 5 PCIe, while the Core Ultra X9 388H provides only 4 CPU lanes of Gen 5.

The integrated graphics differ as well. The desktop processor uses Arc Xe-LPG Graphics with 64 execution units, while the mobile part uses the Arc B390. The socket types are incompatible, with the desktop chip on Intel Socket 1851 and the mobile chip on Intel BGA 2540. The Core Ultra 5 245 was released in January 2025, and the Core Ultra X9 388H in January 2026. The desktop chip has a launch MSRP of $270. The desktop part also has a 65 watt TDP against the mobile part's 25 watts.

Head-to-Head Benchmarks

The Intel Core Ultra 5 245 dominates the Cinebench suite. The largest single-core margin appears in Cinebench R23 single-core, where the desktop chip scores 4648 against 2200.5 for the mobile chip, a delta of 111.2%. Cinebench R15 single-core shows a 51.2% lead with scores of 468 versus 309.5. The R20 single-core test narrows the gap to 5.6%, with 1952 versus 1849. Multi-core results also favor the desktop part. Cinebench R23 multi-core shows 32924 versus 18911, a 74.1% advantage. R15 multi-core gives 3318 versus 2955 for a 12.3% lead, and R20 multi-core gives 13828 versus 13101 for a 5.5% lead.

The Passmark suite tells a similar story. Data compression shows 400942 versus 361763, a 10.8% win for the desktop chip. Extended instructions produce 33304 versus 29943, an 11.2% advantage. Random string sorting favors the desktop part by 11.7% with 49140 versus 44010. Floating point math also lands in favor of the Core Ultra 5 245 at 120548 versus 112550, a 7.1% difference. Data encryption is closer at 30236 versus 28490, a 6.1% gap. Multi-thread performance shows 38706 versus 36811, a 5.1% edge. Single-thread Passmark scores are nearly tied, with the desktop chip at 4394 versus 4280, a 2.7% lead. Integer math is the tightest result at 91187 versus 90882, only 0.3% apart. Find prime numbers also stays close at 365 versus 358, a 2% margin.

The sole benchmark won by the mobile chip is Passmark physics, where the Intel Core Ultra X9 388H scores 3226 against 2569 for the desktop part, a 20.4% advantage. This single win does not offset the overall trend, as the desktop chip claims 16 of 17 head-to-head comparisons.

Specification Differences

The specification comparison highlights the distinct positioning of each processor. The core count differs: 14 for the Core Ultra 5 245 versus 16 for the Core Ultra X9 388H. Base clocks diverge sharply, with the desktop chip at 3.50 GHz and the mobile chip at 2.10 GHz, while boost clocks match at 5.10 GHz for both. TDP shows the mobile part's efficiency focus at 25 watts versus 65 watts for the desktop chip. The socket types are different, as are the architectures and codenames. The L3 cache is 24 MB on the desktop part versus 18 MB on the mobile part. Memory support, bus width, bandwidth, and ECC capability all differ. PCIe lane counts favor the desktop chip with 20 lanes against 4. The integrated graphics units are different models. The desktop chip has a known launch MSRP of $270, while the mobile chip has no recorded launch MSRP. The release dates are roughly one year apart. Transistor count and die size are recorded only for the desktop part, at 17,800 million transistors and 243 mm².

The Verdict

The recorded data points to the Intel Core Ultra 5 245 as the stronger performer in the vast majority of workloads. Its average benchmark score of 48995 places it in the 90th percentile, and it outperforms the Core Ultra X9 388H in every Cinebench test and in 15 of 16 Passmark tests. The single-core advantage is particularly pronounced in Cinebench R23, where the 111.2% delta indicates a substantial difference in peak single-thread capability. The desktop chip also leads in multi-core rendering, with a 74.1% edge in Cinebench R23 multi-core.

The Intel Core Ultra X9 388H is not without merit. Its Passmark physics score of 3226 beats the desktop chip by 20.4%, and its higher memory bandwidth of 153.6 GB/s could benefit memory-sensitive tasks. The mobile chip also runs at a much lower 25 watt TDP, which suits constrained thermal environments. However, the overall benchmark record favors the desktop part, and the percentile rankings confirm this: 90th versus 88th. Users seeking maximal compute performance should follow the data toward the Core Ultra 5 245. Those constrained by power or form factor may find the Core Ultra X9 388H acceptable, but the performance trade-off is substantial in most measured categories.

Where Each One Wins

The Intel Core Ultra 5 245 wins across rendering, compression, encryption, instruction-heavy workloads, and general multi-threaded tasks. Cinebench results, both single-core and multi-core, consistently favor the desktop chip. Passmark data compression, extended instructions, random string sorting, floating point math, and multi-thread scores all show clear advantages. The desktop part also leads in single-thread Passmark tests, though by a smaller margin. For desktop users running CPU-intensive applications, the data supports the Core Ultra 5 245 as the superior choice.

The Intel Core Ultra X9 388H claims a single benchmark victory in Passmark physics, where its 3226 score represents a 20.4% improvement over the desktop chip. This suggests the mobile processor handles that specific physics workload more efficiently. Its higher memory bandwidth of 153.6 GB/s and lower 25 watt TDP also present qualitative advantages for mobile platforms. The mobile chip's 16 cores exceed the desktop part's 14 cores, though this does not translate into multi-core benchmark wins. The data indicates that the Core Ultra X9 388H is best suited to scenarios where its physics performance and power profile matter more than the broad compute performance measured in the other benchmarks.