Intel Core Ultra 5 338H vs Intel Processor 300 Comparison

Head-to-Head Benchmarks

The benchmark database contains a complete set of measurements for the Intel Core Ultra 5 338H, but no recorded benchmark scores for the Intel Processor 300. This makes a direct score-by-score comparison impossible. The data does, however, place the Ultra 5 338H firmly in the upper tier of all CPUs, with a percentile rank of 84. The Processor 300, by contrast, sits at the 50th percentile, squarely in the middle of the field. That gap alone indicates a substantial performance separation between the two parts.

For the Ultra 5 338H, the recorded Cinebench scores are strong. It reaches 2504 points in Cinebench R15 multi-core and 305 points in single-core. In Cinebench R20, it scores 10213 multi-core and 1441 single-core. Cinebench R23 results show 16331 multi-core and 2044 single-core. These numbers place it ahead of a wide range of desktop and mobile processors in the database. The Processor 300 has no corresponding scores, so no delta can be calculated.

PassMark results for the Ultra 5 338H are equally comprehensive. It scores 28717 in multithreaded performance and 4180 in single-thread performance. Integer math reaches 64934, floating point math hits 84067, and extended instructions score 23906. Data encryption records 21367, data compression reaches 276539, and random string sorting scores 34082. Physics processing lands at 2697, and prime number finding records 304. Again, the Processor 300 has no entries in these tests, leaving the Ultra 5 338H as the only part with measurable data.

Without head-to-head benchmark entries or scores for the Processor 300, the database shows zero wins for either side. The practical interpretation is straightforward: the Ultra 5 338H has a fully populated benchmark profile, while the Processor 300 has none. Any performance comparison must therefore rely on architectural and specification differences rather than direct test results.

Architecture Differences

The two processors come from different Intel architectures and serve different market segments. The Intel Core Ultra 5 338H is a mobile part built on Panther Lake, using a 3 nm process node. It belongs to the Core Ultra Series 3 generation, specifically the Ultra 5 (Panther Lake-H) family. The Intel Processor 300 is a desktop chip based on Raptor Lake, using a 10 nm process node, and is listed under the Intel Processor (Raptor Lake) generation.

The core counts differ sharply. The Ultra 5 338H has 12 cores and 12 threads. The Processor 300 has 2 cores and 4 threads. This 6x core advantage and 3x thread advantage gives the Ultra 5 338H a structural edge in heavily threaded workloads. Clock speeds also differ in a meaningful way. The Ultra 5 338H has a base clock of 1.90 GHz and a boost clock of 4.70 GHz. The Processor 300 has a base clock of 3.90 GHz and no recorded boost clock. The higher base clock on the Processor 300 may help in lightly threaded tasks, but the Ultra 5 338H can boost well beyond it.

Cache hierarchy is another major divider. The Ultra 5 338H provides 192 KB of L1 cache per core, 2.5 MB of L2 cache per core, and 18 MB of shared L3 cache. The Processor 300 offers 80 KB of L1 per core, 1.25 MB of L2 per core, and 6 MB of shared L3 cache. The Ultra 5 338H has three times the L3 cache of the Processor 300, which matters for workloads that repeatedly access large datasets.

Memory support also diverges. The Ultra 5 338H uses LPDDR5X memory in a dual-channel configuration, with a recorded memory bandwidth of 136.5 GB/s. The Processor 300 supports both DDR4 and DDR5, also in dual-channel, but no bandwidth figure is recorded. The mobile chip's high-bandwidth memory interface is designed for integrated performance, while the desktop chip retains broader memory compatibility.

PCIe connectivity shows a notable difference. The Ultra 5 338H provides Gen 5 with 4 lanes (CPU only). The Processor 300 provides Gen 5 with 16 lanes (CPU only). The desktop part has four times the CPU-attached PCIe lanes, which is relevant for discrete GPU and NVMe configurations. Integrated graphics also differ: the Ultra 5 338H uses Arc B370, while the Processor 300 uses UHD Graphics 710. The Arc B370 is a significantly more capable integrated solution.

Production status is listed as Active for both, and neither has an unlocked multiplier. The Ultra 5 338H was released on 2026-01-04, while the Processor 300 was released on 2024-01-07. The mobile chip uses Intel BGA 2540 socket, and the desktop chip uses Intel Socket 1700. The Processor 300 has a recorded die size of 163 mm², while the Ultra 5 338H has no die size listed. Neither supports ECC memory.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 5 338H has 12 cores and 12 threads. The Intel Processor 300 has 2 cores and 4 threads. The Ultra 5 338H therefore provides 6 times the core count and 3 times the thread count.

Q: What are the clock speed differences?

A: The Ultra 5 338H has a base clock of 1.90 GHz and a boost clock of 4.70 GHz. The Processor 300 has a base clock of 3.90 GHz and no boost clock recorded in the database.

Q: How do the cache sizes compare?

A: The Ultra 5 338H has 192 KB of L1 cache per core, 2.5 MB of L2 per core, and 18 MB of shared L3 cache. The Processor 300 has 80 KB of L1 per core, 1.25 MB of L2 per core, and 6 MB of shared L3 cache.

Q: Which processor supports faster memory?

A: The Ultra 5 338H supports LPDDR5X memory with a recorded bandwidth of 136.5 GB/s. The Processor 300 supports DDR4 and DDR5 but has no bandwidth figure recorded.

Q: What are the PCIe lane counts?

A: The Ultra 5 338H provides 4 lanes of PCIe Gen 5 (CPU only). The Processor 300 provides 16 lanes of PCIe Gen 5 (CPU only), giving it four times the CPU-attached lanes.

Q: What is the market segment for each processor?

A: The Ultra 5 338H is a mobile processor using Intel BGA 2540 socket. The Processor 300 is a desktop processor using Intel Socket 1700.

Specification Differences

The two processors differ in nearly every major specification field. Core count: 12 for the Ultra 5 338H versus 2 for the Processor 300. Thread count: 12 versus 4. Base clock: 1.90 GHz versus 3.90 GHz. Boost clock: 4.70 GHz for the Ultra 5 338H, none recorded for the Processor 300. TDP: 25 watts for the Ultra 5 338H versus 46 watts for the Processor 300.

Socket types differ: Intel BGA 2540 for the mobile chip, Intel Socket 1700 for the desktop chip. Architecture names differ: Panther Lake versus Raptor Lake. Codename: Panther Lake versus Raptor Lake-S. Process node: 3 nm versus 10 nm. Die size is recorded only for the Processor 300 at 163 mm². Cache values differ across all three levels. Memory support differs: LPDDR5X versus DDR4/DDR5. Memory bandwidth is recorded only for the Ultra 5 338H at 136.5 GB/s. PCIe lanes differ: 4 versus 16, both Gen 5. Integrated graphics differ: Arc B370 versus UHD Graphics 710. Market segment differs: Mobile versus Desktop. Release date differs: 2026-01-04 versus 2024-01-07. The Processor 300 has a launch MSRP of $82. The Ultra 5 338H has no launch MSRP recorded.

Where Each One Wins

The Intel Core Ultra 5 338H wins on raw multi-threaded capability. With 12 cores, 18 MB of L3 cache, and a boost clock of 4.70 GHz, it is built for sustained parallel workloads. Its recorded Cinebench R23 multi-core score of 16331 and PassMark multithread score of 28717 confirm strong throughput. The mobile form factor does not limit its performance profile: the 25 watt TDP combined with LPDDR5X memory at 136.5 GB/s makes it suitable for compact systems that still need heavy compute. The Arc B370 integrated graphics add meaningful GPU capability without a discrete card, at least for basic acceleration and media tasks.

The Intel Processor 300 wins on platform flexibility. It supports both DDR4 and DDR5 memory, giving builders choice in memory type. Its 16 PCIe Gen 5 lanes allow for a full discrete GPU and high-speed storage simultaneously, something the Ultra 5 338H cannot match with only 4 lanes. The higher base clock of 3.90 GHz also gives it an edge in lightly threaded tasks that do not scale across cores, assuming the workload stays within its 2-core, 4-thread envelope. The desktop socket, Intel Socket 1700, offers standard desktop mounting and upgrade paths within that platform.

The data shows a clear division: the Ultra 5 338H is the compute leader across every recorded benchmark category, while the Processor 300 provides a low-power desktop entry point with broad memory compatibility and more expansion headroom via PCIe lanes.

The Verdict

The benchmark database records no performance scores for the Intel Processor 300, so it cannot be compared on measured results. What the data does show is that the Intel Core Ultra 5 338H sits at the 84th percentile of all CPUs, with a complete set of Cinebench and PassMark scores that indicate strong multi-core and single-core performance. The Processor 300 sits at the 50th percentile with zero recorded benchmarks.

For workloads that depend on multi-threaded throughput, rendering, encoding, or compilation, the Ultra 5 338H is the obvious choice. Its 12 cores, 18 MB of L3 cache, and boost clock of 4.70 GHz provide the structural advantages that its benchmark scores reflect. For a desktop build that prioritizes memory flexibility, expansion through 16 PCIe Gen 5 lanes, and a lower entry cost, the Processor 300 remains a functional option, but its 2-core, 4-thread design places it in a different performance class.

The recorded data supports only one side in a direct performance comparison: the Ultra 5 338H. The Processor 300 has no measured scores to challenge it. Buyers who need a mobile processor with high multi-core output and a capable integrated GPU should look to the Ultra 5 338H. Buyers who need a desktop processor with dual-channel DDR4 or DDR5 support and full PCIe expansion should consider the Processor 300, keeping in mind that its benchmark profile is entirely absent from the database.