Intel Core Ultra 7 366H vs Intel Processor U300L Comparison

FAQ

Q: How much faster is the Intel Core Ultra 7 366H in multi-core rendering compared to the Intel Processor U300L?

A: The Core Ultra 7 366H scores 28,477 points in Cinebench R23 multi-core, while the U300L has no recorded benchmark data for this test. The database shows no head-to-head benchmark entries, so direct comparisons rely on the 366H's absolute scores against its nearest rivals.

Q: What is the core and thread configuration difference between the two processors?

A: The Core Ultra 7 366H has 16 cores and 16 threads. The Intel Processor U300L has 5 cores and 6 threads. This represents a 11-core and 10-thread advantage for the 366H.

Q: Which processor has a higher boost clock speed?

A: The Core Ultra 7 366H boosts to 4.80 GHz. The Intel Processor U300L boosts to 4.40 GHz. The 366H holds a 0.40 GHz advantage in maximum boost frequency.

Q: How do the cache sizes compare between the two chips?

A: The Core Ultra 7 366H features 192 KB of L1 cache per core, 2.5 MB of L2 per core, and 18 MB of shared L3 cache. The U300L has 80 KB L1 per core, 1.25 MB L2 per core, and 8 MB of shared L3 cache.

Q: What type of integrated graphics does each processor use?

A: The Core Ultra 7 366H uses Intel Xe3 Graphics. The Intel Processor U300L uses UHD Graphics 48EU. The 366H's graphics architecture is from the Panther Lake generation.

Q: What is the production status and release timing for each chip?

A: Both processors are listed as Active in production. The Core Ultra 7 366H was released in January 2026. The Intel Processor U300L was released in April 2024.

The Verdict

The Intel Core Ultra 7 366H is the clear performance leader based on every recorded metric. It sits at the 87th percentile among all CPUs in the database, with an average benchmark score of 41,263. The Intel Processor U300L sits at the 50th percentile with an average benchmark score of 0 due to having no recorded benchmark entries. The 366H's nearest rivals include the AMD Ryzen 9 5900X, a desktop-class processor, and the 366H actually outperforms it by 0.3% in average score. This places the 366H in a performance tier that competes with high-end desktop chips from previous generations.

For users requiring multi-core throughput, content creation capability, or heavy parallel workloads, the 366H is the only viable choice from this comparison. The U300L, with its 5 cores and 6 threads, targets a fundamentally different segment. Its 15-watt TDP and lower clock speeds indicate a power-efficient design for basic productivity tasks. The data shows no scenario where the U300L would be preferable for performance-sensitive applications.

The U300L does have one advantage: its launch MSRP of $107. The 366H has no recorded launch MSRP in the database. However, without benchmark data for the U300L, quantifying its performance per dollar is impossible. The 366H's 87th percentile ranking and 16 cores make it the pick for anyone needing serious compute power in a mobile form factor.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark entries between these two processors. The winsA and winsB fields both show zero. This means no single test was run on both chips under identical conditions. However, the 366H has a full suite of 17 recorded benchmark scores, while the U300L has none.

Looking at the 366H's absolute performance, its Cinebench R23 multi-core score of 28,477 demonstrates strong parallel scaling. Its single-core score of 4,020 in the same test shows competitive per-thread performance. In PassMark tests, the 366H achieves 334,29 in multithreaded performance, 103,615 in floating point math, and 83,695 in integer math. These figures place it in the top 13% of all CPUs in the database.

The nearest rival data provides context for the 366H's positioning. It scores 0.1% higher than the Intel Core Ultra 7 356H and the AMD Ryzen AI 5 PRO 440. It trails the AMD Ryzen 9 5900X by 0.3%. The Intel Core Ultra X7 358H trails the 366H by 0.7%. These tight margins suggest the 366H sits in a densely packed performance band where architectural differences yield minimal average score separation.

Specification Differences

The two processors differ across nearly every major specification. The Core Ultra 7 366H uses 16 cores and 16 threads. The U300L uses 5 cores and 6 threads. Base clocks differ significantly: the 366H runs at 2.00 GHz, while the U300L runs at 1.20 GHz. Boost clocks show a smaller gap: 4.80 GHz versus 4.40 GHz.

Thermal design power differs by 10 watts. The 366H has a 25-watt TDP. The U300L has a 15-watt TDP. This makes the U300L more suitable for fanless or ultra-compact designs, though the 366H's higher power envelope enables its superior performance.

Socket compatibility is completely different. The 366H uses Intel BGA 2540, a soldered mobile socket. The U300L uses Intel Socket 1700, which supports removable processors. This means the U300L could appear in upgradeable systems, while the 366H is permanently attached to its motherboard.

Memory support diverges as well. The 366H supports DDR5 and LPDDR5X. The U300L supports DDR4 and DDR5. Both use dual-channel memory buses. The 366H has a recorded memory bandwidth of 115.2 GB/s, while the U300L has no bandwidth figure in the database.

PCIe capabilities differ by generation and lane count. The 366H provides Gen 5 with 12 CPU lanes. The U300L provides Gen 4 with 8 CPU lanes. This gives the 366H both newer and more numerous PCIe connections.

Architecture Differences

The Core Ultra 7 366H uses the Panther Lake architecture, built on a 3 nm process node. The U300L uses Raptor Lake architecture, built on a 10 nm node. Both are manufactured by Intel, but the process node difference is substantial. The 3 nm node allows for significantly more transistors in the same die area, enabling the 366H's 16-core configuration.

Cache architecture differs fundamentally. The 366H allocates 192 KB of L1 per core and 2.5 MB of L2 per core. The U300L allocates 80 KB of L1 per core and 1.25 MB of L2 per core. The L3 cache totals are 18 MB shared for the 366H versus 8 MB shared for the U300L. This represents more than double the last-level cache for the 366H.

The 366H is part of the Core Ultra Series 3, specifically the Ultra 7 Panther Lake-H generation. The U300L belongs to the Intel Processor line from the Raptor Lake-PS generation. The 366H uses the newer Panther Lake microarchitecture, which includes the Intel Xe3 Graphics engine. The U300L relies on the older Raptor Lake architecture with UHD Graphics 48EU.

Both processors have locked multipliers, preventing overclocking. Neither supports ECC memory. The 366H's release date of January 2026 makes it nearly two years newer than the U300L's April 2024 launch. The part numbers differ as well: SA4R9Q9EL for the 366H and SRPEKSRPEM for the U300L.

Where Each One Wins

The Core Ultra 7 366H wins in every performance category where data exists. Its 16-core configuration with 18 MB of L3 cache delivers superior multi-threaded throughput. The Cinebench R23 multi-core score of 28,477 indicates strong sustained all-core performance. The PassMark multithread score of 33,429 confirms this pattern. For rendering, video encoding, scientific computation, or any workload that scales across cores, the 366H is the definitive choice.

The 366H also wins in single-threaded performance. Its Cinebench R23 single-core score of 4,020 and PassMark single-thread score of 4,043 show excellent per-core efficiency. The 4.80 GHz boost clock supports this. Applications that rely on single-thread responsiveness, such as legacy software or lightly threaded games, will perform well on the 366H.

The 366H's memory bandwidth of 115.2 GB/s and PCIe Gen 5 support give it advantages in data-intensive workloads and modern peripheral connectivity. The 12 CPU lanes allow for faster NVMe storage or discrete GPU connections compared to the U300L's 8 Gen 4 lanes.

The Intel Processor U300L wins in power efficiency and platform flexibility. Its 15-watt TDP is 10 watts lower than the 366H. This makes the U300L suitable for systems with minimal cooling or battery-focused designs. Its Socket 1700 compatibility means it can be replaced or upgraded without replacing the motherboard. The U300L also supports DDR4 memory, allowing builders to use older, more widely available memory modules.

For basic office work, web browsing, or lightweight media consumption, the U300L's 5 cores and 6 threads are sufficient. Its 4.40 GHz boost clock provides adequate responsiveness for such tasks. The 50th percentile ranking means it sits at the median of all CPUs in the database, but with no benchmark scores recorded, its real-world performance remains unquantified in the database.

The data shows a clear split: the 366H targets performance users with demanding workloads, while the U300L targets power-conscious systems with modest computing needs. The 366H's 87th percentile ranking and comprehensive benchmark scores make it the default recommendation for any performance-sensitive application. The U300L's role is limited to low-power, cost-sensitive builds where its lower TDP and socket compatibility matter more than raw throughput.