Intel Core Ultra X9 388H vs Intel Processor 300T Comparison

FAQ

Q: How do the core counts differ between the Intel Core Ultra X9 388H and the Intel Processor 300T?

A: The Intel Core Ultra X9 388H has 16 cores and 16 threads, while the Intel Processor 300T has 2 cores and 4 threads. This is an 8x difference in core count and a 4x difference in thread count.

Q: What is the process node difference between the two processors?

A: The Intel Core Ultra X9 388H is built on a 3 nm process node, while the Intel Processor 300T uses a 10 nm process node. Both are manufactured by Intel.

Q: Which processor has a higher boost clock speed?

A: The Intel Core Ultra X9 388H has a boost clock of 5.10 GHz. The Intel Processor 300T has no recorded boost clock in the database, only a base clock of 3.40 GHz.

Q: What type of memory does each processor support?

A: The Intel Core Ultra X9 388H supports LPDDR5X memory with dual-channel configuration and 153.6 GB/s bandwidth. The Intel Processor 300T supports both DDR4 and DDR5 memory in dual-channel configuration, though its memory bandwidth is not recorded.

Q: How do their integrated graphics compare?

A: The Intel Core Ultra X9 388H integrates Arc B390 graphics, while the Intel Processor 300T integrates UHD Graphics 710.

Q: What are the market segments for these two processors?

A: The Intel Core Ultra X9 388H is a mobile processor, while the Intel Processor 300T is a desktop processor.

Architecture Differences

The two processors represent fundamentally different architectural approaches. The Intel Core Ultra X9 388H uses the Panther Lake architecture, codenamed Panther Lake, and belongs to the Ultra X9 (Panther Lake-H) generation within the Core Ultra Series 3. It is built on a 3 nm process node at Intel's foundry. The Intel Processor 300T uses the Raptor Lake architecture, specifically Raptor Lake-S, and is manufactured on a 10 nm process node.

The core configuration differences are substantial. The Ultra X9 388H provides 16 cores and 16 threads, indicating a design without hyperthreading on its cores. The Processor 300T provides 2 cores and 4 threads, meaning each physical core supports two threads. The cache hierarchy also differs dramatically. The Ultra X9 388H has 192 KB of L1 cache per core, 3 MB of L2 cache per core, and 18 MB of shared L3 cache. The Processor 300T has 80 KB of L1 cache per core, 1.25 MB of L2 cache per core, and only 6 MB of shared L3 cache.

The memory interfaces differ as well. The Ultra X9 388H supports LPDDR5X memory across a dual-channel bus with a recorded bandwidth of 153.6 GB/s. The Processor 300T supports both DDR4 and DDR5 memory in dual-channel configuration, but its bandwidth is not recorded in the database. Both processors lack ECC memory support.

PCIe connectivity is another differentiator. The Ultra X9 388H provides Gen 5 with 4 lanes (CPU only), while the Processor 300T provides Gen 5 with 16 lanes (CPU only). This makes the desktop chip more expansive for peripheral connectivity despite its lower core count.

The die size is only recorded for the Processor 300T at 163 mm². The integrated graphics differ significantly: the mobile Ultra X9 388H uses Arc B390 graphics, while the desktop Processor 300T uses UHD Graphics 710. The Processor 300T has a launch MSRP of $82. The Ultra X9 388H's production status is Active, as is the Processor 300T's. The Ultra X9 388H has a release date in early 2026, while the Processor 300T was released in early 2024. Neither processor has an unlocked multiplier.

Head-to-Head Benchmarks

Direct head-to-head benchmark results are not available in the database for these two processors. However, the Intel Core Ultra X9 388H has an extensive benchmark record, while the Intel Processor 300T has no recorded benchmark scores and an average benchmark score of zero. This means quantitative comparison relies entirely on the Ultra X9 388H's measured results and its percentile position.

The Ultra X9 388H achieves an average benchmark score of 44466 across all recorded tests. It sits at the 88th percentile among all CPUs in the database. Its nearest rivals include the AMD Ryzen 5 7500X3D with an average score of 44573 (0.2% higher), the Intel Core i9-13950HX with 44342 (0.3% lower), the AMD Ryzen AI Max 385 with 44309 (0.4% lower), and the Intel Core i5-13600 with 44240 (0.5% lower). This places the Ultra X9 388H within a very tight performance cluster, essentially neck-and-neck with these four alternatives.

In Cinebench tests, the Ultra X9 388H records a multicore score of 2955 in Cinebench R15 and a single-core score of 309.5. In Cinebench R20, it scores 13101 multicore and 1849 single-core. In Cinebench R23, the multicore score is 18911 and single-core is 2200.5. These results show strong scaling from single-core to multicore workloads, consistent with its 16-core design.

PassMark results for the Ultra X9 388H cover a wide range of workloads. It scores 361763 in data compression, 28490 in data encryption, 29943 in extended instructions, 358 in find prime numbers, 112550 in floating point math, 90882 in integer math, 36811 in multithread, 3226 in physics, 44010 in random string sorting, and 4280 in single thread. The multithread score of 36811 versus single-thread score of 4280 indicates roughly an 8.6x scaling factor, which aligns with its 16-core, no-hyperthreading configuration.

Because the Processor 300T has no recorded benchmarks, the database cannot confirm its relative performance. Its percentile of 50 places it at the median of all CPUs, but this is based on no measured scores. The only meaningful comparison available is architectural: the Ultra X9 388H's 16 cores versus the Processor 300T's 2 cores, and their respective cache and memory configurations.

Specification Differences

The two processors differ across nearly every recorded specification field.

Cores and threads: The Ultra X9 388H has 16 cores and 16 threads. The Processor 300T has 2 cores and 4 threads.

Clock speeds: The Ultra X9 388H has a base clock of 2.10 GHz and a boost clock of 5.10 GHz. The Processor 300T has a base clock of 3.40 GHz and no recorded boost clock.

TDP: The Ultra X9 388H is rated at 25 W. The Processor 300T is rated at 35 W.

Socket: The Ultra X9 388H uses Intel BGA 2540. The Processor 300T uses Intel Socket 1700.

Architecture and generation: The Ultra X9 388H uses Panther Lake architecture in the Ultra X9 (Panther Lake-H) generation. The Processor 300T uses Raptor Lake architecture in the Intel Processor (Raptor Lake) generation.

Process node: 3 nm for the Ultra X9 388H, 10 nm for the Processor 300T.

Die size: Not recorded for the Ultra X9 388H. The Processor 300T has a die size of 163 mm².

Cache: The Ultra X9 388H has 192 KB L1 per core, 3 MB L2 per core, and 18 MB shared L3. The Processor 300T has 80 KB L1 per core, 1.25 MB L2 per core, and 6 MB shared L3.

Memory support: LPDDR5X for the Ultra X9 388H. DDR4 and DDR5 for the Processor 300T.

Memory bandwidth: 153.6 GB/s for the Ultra X9 388H. Not recorded for the Processor 300T.

PCIe: Gen 5 with 4 lanes for the Ultra X9 388H. Gen 5 with 16 lanes for the Processor 300T.

Integrated graphics: Arc B390 for the Ultra X9 388H. UHD Graphics 710 for the Processor 300T.

Market segment: Mobile for the Ultra X9 388H. Desktop for the Processor 300T.

Release date: The Ultra X9 388H was released in January 2026. The Processor 300T was released in January 2024.

Launch MSRP: Not recorded for the Ultra X9 388H. The Processor 300T has a launch MSRP of $82.

Part number: SA4QWQ9EK for the Ultra X9 388H. SRN3K for the Processor 300T.

Benchmark data: The Ultra X9 388H has 17 recorded benchmark scores. The Processor 300T has none.

The Verdict

The data presents a clear split. The Intel Core Ultra X9 388H is a high-core-count mobile processor with substantial measured performance across all benchmark categories. Its 88th percentile ranking and average score of 44466 place it among the top tier of CPUs in the database, competitive with the AMD Ryzen 5 7500X3D and Intel Core i9-13950HX. Its 16 cores, 5.10 GHz boost clock, 18 MB L3 cache, and 153.6 GB/s memory bandwidth position it as a multi-threaded workload processor.

The Intel Processor 300T is a low-core-count desktop part with no recorded benchmark scores. Its 2 cores and 4 threads, 3.40 GHz base clock, 6 MB L3 cache, and 35 W TDP indicate a fundamentally different role. The database cannot confirm its performance characteristics through measurements. Its 50th percentile ranking is unverified by any benchmark data.

Users working with heavily multi-threaded applications should consider the Ultra X9 388H based on its recorded Cinebench R23 multicore score of 18911 and PassMark multithread score of 36811. Users constrained to desktop platforms with the Socket 1700 interface and requiring Gen 5 PCIe with 16 lanes should consider the Processor 300T, as its specification set includes connectivity the mobile chip cannot match.

Where Each One Wins

Intel Core Ultra X9 388H wins on raw compute throughput. The 16-core configuration with 18 MB of shared L3 cache delivers measured multicore performance that the 2-core Processor 300T cannot approach. The Cinebench R23 multicore score of 18911 and PassMark integer math score of 90882 demonstrate this advantage. The 5.10 GHz boost clock also gives it a single-core edge, reflected in its Cinebench R23 single-core score of 2200.5.

Intel Core Ultra X9 388H wins on memory bandwidth. The recorded 153.6 GB/s for LPDDR5X support is a specification advantage over the Processor 300T, whose bandwidth is unrecorded. The 3 nm process node also suggests efficiency advantages over the 10 nm node of the Processor 300T.

Intel Core Ultra X9 388H wins on integrated graphics. The Arc B390 graphics solution is a more capable integrated GPU than the UHD Graphics 710 found in the Processor 300T.

Intel Processor 300T wins on platform connectivity. The Gen 5 PCIe implementation with 16 lanes (CPU only) provides far more expansion capability than the 4 lanes of the Ultra X9 388H. This makes it suited for desktop builds requiring multiple Gen 5 devices.

Intel Processor 300T wins on memory flexibility. Support for both DDR4 and DDR5 gives it a wider range of compatible memory modules than the LPDDR5X-only Ultra X9 388H.

Intel Processor 300T wins on base clock. The 3.40 GHz base clock is higher than the Ultra X9 388H's 2.10 GHz base clock, which may matter for sustained workloads that do not trigger boost behavior.

The benchmark record belongs entirely to the Ultra X9 388H. The Processor 300T's absence of recorded scores means any performance claims for it must rely on architectural characteristics alone. The database's percentile ranking of 50 for the Processor 300T is not supported by measured data, while the Ultra X9 388H's 88th percentile is backed by 17 individual benchmark results.