Intel Core Ultra X9 378H vs Intel Processor U301L Comparison

Head-to-Head Benchmarks

The Intel Core Ultra X9 378H and the Intel Processor U301L occupy vastly different performance tiers, and the recorded benchmark data makes that separation explicit. The Core Ultra X9 378H delivers a Cinebench R23 multi-core score of 32,553 points, while the U301L has no recorded benchmark scores in the database, leaving its performance unquantified. In single-core Cinebench R23, the X9 378H reaches 4,595 points, a figure that places it firmly in the high-performance mobile segment.

The X9 378H's Passmark results further illustrate its capabilities. The multi-thread score of 38,298 and single-thread score of 4,453 indicate a processor that handles both heavily threaded workloads and responsive single-threaded tasks. Its integer math score of 92,603 and floating point math score of 114,500 show balanced arithmetic throughput. Data compression reaches 386,591 points, while encryption scores 29,840, and extended instructions (SIMD) score 31,315. The physics score of 3,404 and random string sorting score of 44,648 round out a comprehensive productivity profile.

Because the U301L lacks any benchmark entries, the head-to-head comparison relies entirely on the X9 378H's absolute scores and its position within the broader database. The X9 378H holds an 89th percentile ranking across all CPUs, with an average benchmark score of 47,468. Its nearest rivals in the database include the AMD Ryzen 9 PRO 5945 (average score 47,527, delta -0.1%), the Intel Core Ultra 7 265T (47,697, delta -0.5%), the Intel Core i7-13700KF (47,330, delta +0.3%), and the Intel Core i9-12900F (47,176, delta +0.6%). These deltas are all within one percentage point, meaning the X9 378H trades positions with these established desktop and high-end mobile parts rather than dominating them. The U301L's 50th percentile ranking, by contrast, places it at the midpoint of the database, but with no average score recorded, its exact standing cannot be compared numerically.

Architecture Differences

The two processors are built on fundamentally different silicon and packaging. The Core Ultra X9 378H uses a 3 nm process node from Intel's own foundry, with the Panther Lake codename and a generation designation of Ultra X9 (Panther Lake-H). It belongs to the Core Ultra Series 3 family. The U301L uses a 10 nm node under the Raptor Lake architecture, with the Raptor Lake-PS codename and a generation label of Intel Processor (Raptor Lake). The process node difference alone accounts for significant efficiency and density advantages for the X9 378H.

Core counts diverge sharply. The X9 378H has 16 cores and 16 threads, indicating a design without Hyper-Threading on its performance cores. The U301L has 5 cores and 6 threads, a configuration that suggests a mix of performance and efficiency cores with hyper-threading on at least one core. The X9 378H's base clock is 2.00 GHz with a boost clock of 5.00 GHz, while the U301L operates at 1.20 GHz base and 2.20 GHz boost. The X9 378H's 5.00 GHz boost represents a substantial frequency advantage, which directly contributes to its high single-thread scores.

Cache hierarchies are also markedly different. The X9 378H provides 192 KB of L1 cache per core, 2.5 MB of L2 per core, and 18 MB of shared L3 cache. The U301L offers 80 KB of L1 per core, 1.25 MB of L2 per core, and 8 MB of shared L3. The X9 378H's larger per-core L1 and L2 caches, combined with more than double the L3, give it a significant advantage in data locality and repeated access patterns.

Memory support differs by generation. The X9 378H uses LPDDR5X memory with dual-channel support and a recorded memory bandwidth of 153.6 GB/s. The U301L supports both DDR4 and DDR5, also dual-channel, but its memory bandwidth is not recorded in the database. PCIe connectivity also differs: the X9 378H provides PCIe Gen 5 with 4 lanes (CPU only), while the U301L provides PCIe Gen 4 with 8 lanes (CPU only). The X9 378H's Gen 5 interface offers higher per-lane bandwidth, though the U301L has more lanes available.

Integrated graphics present another distinction. The X9 378H includes Arc B390 graphics, while the U301L includes UHD Graphics 64EU. The Arc B390 represents a dedicated-class integrated GPU solution, whereas the UHD Graphics 64EU is a more conventional integrated graphics unit. Neither processor supports ECC memory, and both are locked (multiplier unlocked is false for both). The X9 378H uses an Intel BGA 2540 socket, while the U301L uses Intel Socket 1700, indicating different platform requirements and upgrade paths.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra X9 378H has 16 cores and 16 threads, while the Intel Processor U301L has 5 cores and 6 threads.

Q: What is the boost clock difference between the two?

A: The X9 378H boosts to 5.00 GHz, while the U301L boosts to 2.20 GHz.

Q: How much L3 cache does each processor have?

A: The X9 378H has 18 MB of shared L3 cache, whereas the U301L has 8 MB of shared L3 cache.

Q: Do both processors support ECC memory?

A: No, neither processor supports ECC memory.

Q: What process nodes are used?

A: The X9 378H uses a 3 nm node, and the U301L uses a 10 nm node.

Q: What are the integrated graphics solutions?

A: The X9 378H uses Arc B390 graphics, while the U301L uses UHD Graphics 64EU.

Specification Differences

The following fields differ between the two processors, based solely on the recorded data:

• Cores: 16 (X9 378H) vs 5 (U301L)
• Threads: 16 (X9 378H) vs 6 (U301L)
• Base clock: 2.00 GHz (X9 378H) vs 1.20 GHz (U301L)
• Boost clock: 5.00 GHz (X9 378H) vs 2.20 GHz (U301L)
• TDP: 25 (X9 378H) vs 15 (U301L)
• Socket: Intel BGA 2540 (X9 378H) vs Intel Socket 1700 (U301L)
• Codename: Panther Lake (X9 378H) vs Raptor Lake-PS (U301L)
• Process node: 3 nm (X9 378H) vs 10 nm (U301L)
• L1 cache per core: 192 KB (X9 378H) vs 80 KB (U301L)
• L2 cache per core: 2.5 MB (X9 378H) vs 1.25 MB (U301L)
• L3 cache shared: 18 MB (X9 378H) vs 8 MB (U301L)
• Memory support: LPDDR5X (X9 378H) vs DDR4, DDR5 (U301L)
• Memory bandwidth: 153.6 GB/s (X9 378H) vs not recorded (U301L)
• PCIe: Gen 5, 4 Lanes (X9 378H) vs Gen 4, 8 Lanes (U301L)
• Integrated graphics: Arc B390 (X9 378H) vs UHD Graphics 64EU (U301L)
• Release date: 2026-04-03 (X9 378H) vs 2024-04-07 (U301L)
• Part number: unknown (X9 378H) vs SRPKFQ5CW (U301L)
• Launch MSRP: null (X9 378H) vs $107 (U301L)
• Series: Core Ultra Series 3 (X9 378H) vs null (U301L)
• Generation: Ultra X9 (Panther Lake-H) vs Intel Processor (Raptor Lake)

Where Each One Wins

The Intel Core Ultra X9 378H wins in every measurable performance domain. Its 16 cores and 5.00 GHz boost clock produce a Cinebench R23 multi-core score of 32,553 and a single-core score of 4,595. These scores indicate a processor capable of sustained heavy workloads, including video rendering, software compilation, and scientific computing. The Passmark data confirms this: multi-thread score of 38,298, integer math of 92,603, and floating point math of 114,500 all point to strong compute throughput. The 153.6 GB/s memory bandwidth supports these workloads by feeding the cores efficiently. The Arc B390 integrated graphics provide a level of GPU capability that exceeds typical integrated solutions, making the X9 378H suitable for light content creation and GPU-accelerated tasks without a discrete card.

The Intel Processor U301L wins in power efficiency and platform simplicity. Its 15 TDP is lower than the X9 378H's 25 TDP, and its 2.20 GHz boost clock at 5 cores and 6 threads suggests a processor designed for basic productivity, web browsing, and office applications. The support for both DDR4 and DDR5 memory gives system builders flexibility in memory selection, and the PCIe Gen 4 with 8 lanes provides more direct CPU-attached lanes for storage or other devices. The U301L's launch MSRP is $107, which is recorded in the database (the X9 378H has no launch MSRP recorded). Its 50th percentile ranking indicates it sits near the middle of all CPUs in the database, making it a mainstream option. For tasks that require minimal compute, such as document editing or media playback, the U301L's lower TDP and simpler architecture may be sufficient.

The Verdict

The data directs a clear split. The Intel Core Ultra X9 378H is the choice for any workload that demands high multi-threaded throughput, high single-thread responsiveness, or substantial memory bandwidth. Its 89th percentile ranking and average benchmark score of 47,468 place it in the company of processors like the AMD Ryzen 9 PRO 5945 and Intel Core i7-13700KF, with deltas of -0.1% and +0.3% respectively. Users seeking a mobile processor for demanding applications should select the X9 378H.

The Intel Processor U301L, with no recorded benchmark scores and a 50th percentile ranking, serves a different purpose. Its 5 cores, 6 threads, and 2.20 GHz boost clock are suited for light, everyday computing tasks. The lower 15 TDP and compatibility with DDR4 and DDR5 memory make it a flexible, low-power option for basic mobile systems. Its launch MSRP of $107 reflects its entry-level positioning, though pricing analysis stops at that single stated figure. Users who need minimal compute and prefer lower power consumption should select the U301L. There is no overlap in the data: the X9 378H dominates performance, while the U301L offers efficiency and platform flexibility.