Intel Core Ultra 5 336H vs Intel Processor U303L Comparison

Head-to-Head Benchmarks

The Intel Core Ultra 5 336H holds a decisive performance advantage across every recorded benchmark in the database. The Core Ultra 5 336H achieves an average benchmark score of 34485, placing it in the 84th percentile of all CPUs. The Intel Processor U303L, by contrast, has no recorded benchmark scores and sits in the 50th percentile, which reflects a mid-pack position based on its specifications alone.

In multi-core rendering, the Core Ultra 5 336H posts a Cinebench R23 multicore score of 23991, a Cinebench R20 multicore score of 10076, and a Cinebench R15 multicore score of 2418. These figures indicate strong parallel workload capability, driven by its 16 cores and 16 threads. The U303L has no comparable scores in the database, so direct numerical comparison is impossible, but the architectural gap between the two parts is substantial.

Single-core performance follows the same trend. The Core Ultra 5 336H records Cinebench R23 single-core at 3387, Cinebench R20 single-core at 1422, and Cinebench R15 single-core at 341. PassMark single-thread testing yields 4013 points. These numbers reflect a modern high-frequency design, with a boost clock of 4.60 GHz. The U303L's boost clock of 2.60 GHz, combined with its older 10 nm process, suggests a significant single-thread deficit, though no direct benchmark numbers exist for confirmation.

PassMark workload results for the Core Ultra 5 336H show consistent strength across varied tasks. Integer math scores 62070, floating point math scores 82415, extended instructions score 24542, and data encryption scores 21291. Data compression reaches 280340, while random string sorting hits 34402. Physics simulation scores 2682, and prime number finding scores 299. The multithread score of 28545 confirms that the 16-core design scales well under parallel loads.

The nearest rivals for the Core Ultra 5 336H provide context for its positioning. The Intel Core i7-13700HX averages 34554, which is only 0.2% higher. The Intel Core i5-13450HX averages 34333, 0.4% lower. The AMD Ryzen 7 3700X averages 34260, 0.7% lower, and the AMD Ryzen AI 7 350 averages 34222, 0.8% lower. This places the Core Ultra 5 336H in a tight cluster with these established processors, essentially matching the i7-13700HX and slightly outpacing the other three.

Architecture Differences

The two processors come from fundamentally different Intel design lineages. The Core Ultra 5 336H uses the Panther Lake architecture, built on a 3 nm process node at Intel's own foundry. It belongs to the Core Ultra Series 3, specifically the Ultra 5 (Panther Lake-H) generation. The U303L uses the Raptor Lake architecture, specifically Raptor Lake-PS, built on a 10 nm process node. This process node gap alone explains a large portion of the performance disparity, as the 3 nm node allows for higher transistor density and improved power efficiency.

Core counts differ dramatically. The Core Ultra 5 336H has 16 cores and 16 threads, meaning every core maps to one thread with no simultaneous multithreading. The U303L has 5 cores and 6 threads, indicating a hybrid configuration with one additional thread available, likely from efficient cores. The 11-core difference in raw core count gives the Core Ultra 5 336H a massive advantage in any parallel workload.

Cache hierarchies also diverge. The Core Ultra 5 336H provides 192 KB of L1 cache per core, 2.5 MB of L2 cache per core, and 18 MB of shared L3 cache. The U303L offers 80 KB of L1 per core, 1.25 MB of L2 per core, and 12 MB of shared L3 cache. The larger per-core caches and the higher total L3 capacity on the Core Ultra 5 336H support better data locality and reduce memory latency pressure in compute-intensive tasks.

Clock speeds reinforce the architectural gap. The Core Ultra 5 336H runs at a base clock of 1.90 GHz and boosts to 4.60 GHz. The U303L runs at a base of 1.20 GHz and boosts to only 2.60 GHz. The 2.0 GHz boost advantage for the Core Ultra 5 336H is substantial and directly impacts both single-thread and lightly threaded performance.

Memory support differs as well. The Core Ultra 5 336H supports DDR5 and LPDDR5X memory over a dual-channel bus, with a recorded memory bandwidth of 115.2 GB/s. The U303L supports DDR4 and DDR5, also dual-channel, but has no bandwidth figure in the database. The faster memory types and higher bandwidth on the Core Ultra 5 336H allow data to feed the CPU cores more rapidly.

PCI Express capabilities separate the two as well. The Core Ultra 5 336H provides Gen 5 with 12 CPU-only lanes, while the U303L provides Gen 4 with 8 CPU-only lanes. This affects potential throughput for attached devices such as NVMe storage or discrete GPUs, with the newer standard offering higher per-lane bandwidth.

Integrated graphics also differ. The Core Ultra 5 336H uses Intel Xe3 Graphics, while the U303L uses UHD Graphics 96EU. The Xe3 architecture is newer and designed for improved efficiency and feature support, though the database contains no direct graphics benchmarks for either part.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 5 336H has 16 cores and 16 threads, while the Intel Processor U303L has 5 cores and 6 threads. The Core Ultra 5 336H offers 11 additional cores.

Q: How do their boost clocks compare?

A: The Core Ultra 5 336H boosts to 4.60 GHz, while the U303L boosts to 2.60 GHz. The difference is 2.0 GHz in favor of the Core Ultra 5 336H.

Q: What process nodes do these processors use?

A: The Core Ultra 5 336H is built on Intel's 3 nm process, while the U303L uses a 10 nm process. The 3 nm node is significantly more advanced.

Q: Do both processors support the same memory types?

A: No. The Core Ultra 5 336H supports DDR5 and LPDDR5X, while the U303L supports DDR4 and DDR5. The Core Ultra 5 336H also has a recorded memory bandwidth of 115.2 GB/s; no bandwidth figure exists for the U303L.

Q: What is the release timeline for each?

A: The Core Ultra 5 336H was released on 2026-01-04, while the U303L was released on 2024-04-07. The Core Ultra 5 336H is the newer design by nearly two years.

Q: Where does the Core Ultra 5 336H rank among all CPUs?

A: The Core Ultra 5 336H sits in the 84th percentile of all CPUs, with an average benchmark score of 34485. The U303L sits in the 50th percentile with no recorded benchmark scores.

The Verdict

The data points to a one-sided comparison. The Intel Core Ultra 5 336H delivers benchmark scores that place it alongside the Intel Core i7-13700HX, the Intel Core i5-13450HX, the AMD Ryzen 7 3700X, and the AMD Ryzen AI 7 350, with deltas ranging from 0.2% below the i7-13700HX to 0.8% above the Ryzen AI 7 350. This is a competitive modern mobile processor that handles demanding workloads.

The Intel Processor U303L, with no benchmark scores and a 50th percentile ranking, cannot match that level of performance. Its 5 cores, 6 threads, 2.60 GHz boost, and 10 nm process node place it in a fundamentally lower performance class. The 16-core, 4.60 GHz, 3 nm Panther Lake design of the Core Ultra 5 336H is categorically superior in compute capability.

For workloads that depend on multi-core throughput, rendering, data compression, encryption, or floating-point math, the Core Ultra 5 336H is the only viable choice between these two. The U303L may still serve in light-duty mobile scenarios where its 15 W TDP and lower core count suffice, but the recorded data offers no benchmark evidence of competitive performance.

The launch MSRP for the U303L is $285. There is no launch MSRP recorded for the Core Ultra 5 336H.

Specification Differences

The following specifications differ between the two processors:

• Cores: 16 (Core Ultra 5 336H) vs 5 (U303L)
• Threads: 16 vs 6
• Base clock: 1.90 GHz vs 1.20 GHz
• Boost clock: 4.60 GHz vs 2.60 GHz
• TDP: 25 W vs 15 W
• Socket: Intel BGA 2540 vs Intel Socket 1700
• Architecture: Panther Lake vs Raptor Lake
• Process node: 3 nm vs 10 nm
• L1 cache per core: 192 KB vs 80 KB
• L2 cache per core: 2.5 MB vs 1.25 MB
• L3 cache shared: 18 MB vs 12 MB
• Memory support: DDR5, LPDDR5X vs DDR4, DDR5
• Memory bandwidth: 115.2 GB/s vs not recorded
• PCIe: Gen 5, 12 lanes vs Gen 4, 8 lanes
• Integrated graphics: Intel Xe3 Graphics vs UHD Graphics 96EU
• Release date: 2026-01-04 vs 2024-04-07
• Launch MSRP: not recorded vs $285
• Part number: SA4RD vs SRPKEQ5CV

Fields that are identical or not recorded for either part include manufacturer (Intel for both), foundry (Intel for both), ECC memory support (false for both), multiplier unlock status (false for both), and market segment (Mobile for both).

Where Each One Wins

The Intel Core Ultra 5 336H wins in every measurable category based on the database records. Its 16 cores and 16 threads make it suitable for heavily parallel tasks such as video rendering, 3D modeling, scientific computation, and software compilation. The Cinebench R23 multicore score of 23991 and PassMark multithread score of 28545 confirm strong scaling. The 4.60 GHz boost clock and single-core Cinebench R23 score of 3387 indicate that lightly threaded applications, such as office productivity, web browsing, and general system responsiveness, also benefit from the higher frequency and newer architecture.

The Intel Processor U303L has no benchmark wins in the database. Its advantages are limited to specification-level differences: a lower 15 W TDP suggests lower power draw, and its support for DDR4 memory could allow for lower-cost system builds. Its 5 cores and 6 threads, along with a 2.60 GHz boost clock, position it for basic mobile tasks like document editing, media playback, and light multitasking. The 10 nm process node and older Raptor Lake architecture indicate a design focused on efficiency rather than peak performance.

For users who need maximum compute throughput, the Core Ultra 5 336H is the clear selection. For users who prioritize low power consumption and basic functionality, the U303L may suffice, but the recorded data provides no benchmark evidence that it competes with the Core Ultra 5 336H in any performance metric.