Intel Core Ultra 9 290HX Plus vs Intel Processor 300T Comparison

The Intel Core Ultra 9 290HX Plus and the Intel Processor 300T occupy opposite ends of the performance spectrum. The database records show a 24-core mobile flagship designed for heavy workloads, while the 300T is a 2-core desktop part aimed at basic computing. The following analysis draws solely from recorded measurements and specification data.

Head-to-Head Benchmarks

The database contains no direct head-to-head benchmark comparisons between these two processors, as the Intel Processor 300T has no recorded benchmark scores. However, the Intel Core Ultra 9 290HX Plus has an extensive benchmark suite, and its percentile ranking provides context for its performance class. The Ultra 9 sits at the 95th percentile of all CPUs in the database, while the Intel Processor 300T sits at the 50th percentile.

The Ultra 9 290HX Plus delivers an average benchmark score of 79574, placing it within 0.3% of the Intel Core i9-14900KF (79371) and 0.6% of the Intel Core i9-14900K (79097). It trails the AMD EPYC 7413 by 0.6% (80041) and the Intel Xeon w5-2565X by 1.4% (80671). These nearest rivals indicate that the Ultra 9 performs at the level of recent high-end desktop and server processors.

The Intel Processor 300T has no recorded benchmark scores in the database, so no direct numerical comparison is possible. The 300T's 50th percentile ranking, combined with its 2-core, 4-thread configuration, indicates a fundamentally different performance class. The Ultra 9's 24 cores and 24 threads provide a structural advantage that the 300T cannot offset.

Architecture Differences

The two processors come from different architectural families and manufacturing processes. The Intel Core Ultra 9 290HX Plus uses the Arrow Lake-HX Refresh architecture, built on a 3 nm process at TSMC. It integrates 17,800 million transistors on a 243 mm² die. The Intel Processor 300T uses the Raptor Lake architecture, built on a 10 nm process at Intel, with a die size of 163 mm² and no transistor count recorded.

The Ultra 9 290HX Plus features 24 cores and 24 threads, with a base clock of 2.70 GHz and a boost clock of 5.50 GHz. Its cache hierarchy includes 192 KB of L1 per core, 3 MB of L2 per core, and 36 MB of shared L3 cache. The 300T offers 2 cores and 4 threads, with a base clock of 3.40 GHz and no boost clock recorded. Its cache includes 80 KB of L1 per core, 1.25 MB of L2 per core, and 6 MB of shared L3 cache.

Memory support differs significantly. The Ultra 9 supports DDR5 memory on a dual-channel bus with 102.4 GB/s bandwidth and includes ECC support. The 300T supports both DDR4 and DDR5 on a dual-channel bus, but has no recorded memory bandwidth and no ECC support. The Ultra 9 uses Intel BGA 2114 socket, while the 300T uses Intel Socket 1700.

The integrated graphics also differ. The Ultra 9 includes Arc Xe-LPG Graphics with 64 execution units, while the 300T includes UHD Graphics 710. The Ultra 9 supports PCIe Gen 5 with 20 lanes (CPU only), while the 300T supports PCIe Gen 5 with 16 lanes (CPU only). The Ultra 9 has an unlocked multiplier, while the 300T is locked.

FAQ

Q: Which processor has more cores and threads?

A: The Intel Core Ultra 9 290HX Plus has 24 cores and 24 threads. The Intel Processor 300T has 2 cores and 4 threads. The Ultra 9 provides 12 times the core count and 6 times the thread count.

Q: What are the clock speed differences?

A: The Ultra 9 290HX Plus has a base clock of 2.70 GHz and a boost clock of 5.50 GHz. The Intel Processor 300T has a base clock of 3.40 GHz and no recorded boost clock.

Q: How do the cache sizes compare?

A: The Ultra 9 290HX Plus has 192 KB L1 per core, 3 MB L2 per core, and 36 MB shared L3. The Intel Processor 300T has 80 KB L1 per core, 1.25 MB L2 per core, and 6 MB shared L3. The Ultra 9 has 6 times the L3 cache capacity.

Q: Which processor supports ECC memory?

A: The Intel Core Ultra 9 290HX Plus supports ECC memory. The Intel Processor 300T does not support ECC memory.

Q: What is the market segment for each processor?

A: The Intel Core Ultra 9 290HX Plus is classified as a mobile processor. The Intel Processor 300T is classified as a desktop processor.

Q: What is the process node for each processor?

A: The Ultra 9 290HX Plus uses a 3 nm process at TSMC. The Intel Processor 300T uses a 10 nm process at Intel.

The Verdict

The recorded data indicates a clear performance hierarchy. The Intel Core Ultra 9 290HX Plus achieves an average benchmark score of 79574, placing it at the 95th percentile of all CPUs. It performs within 1.4% of the Intel Xeon w5-2565X and within 0.6% of the Intel Core i9-14900K. This positions it as a high-end processor suitable for demanding multi-threaded workloads.

The Intel Processor 300T sits at the 50th percentile with no recorded benchmark scores. Its 2-core, 4-thread configuration, 6 MB L3 cache, and lack of a boost clock indicate a basic computing part. The 300T supports DDR4 and DDR5 memory, which provides flexibility for budget desktop builds, but its performance ceiling is substantially lower than the Ultra 9.

Users requiring maximum multi-core performance should select the Intel Core Ultra 9 290HX Plus. The data shows it outperforms the 300T in every measurable specification: core count, thread count, cache size, memory bandwidth, and process node. The 300T serves a different purpose, offering a low-power desktop option with a 35 W TDP compared to the Ultra 9's 55 W TDP.

Specification Differences

The two processors differ in nearly every specification field. The Ultra 9 290HX Plus has 24 cores and 24 threads, while the 300T has 2 cores and 4 threads. The Ultra 9 has a base clock of 2.70 GHz and a boost clock of 5.50 GHz; the 300T has a base clock of 3.40 GHz and no boost clock. The Ultra 9 has a TDP of 55 W, while the 300T has a TDP of 35 W.

The Ultra 9 uses the Arrow Lake-HX Refresh codename and the Ultra 9 (Arrow Lake-HX) generation, built on a 3 nm TSMC process with 17,800 million transistors on a 243 mm² die. The 300T uses the Raptor Lake architecture and codename, built on a 10 nm Intel process with a 163 mm² die and no recorded transistor count.

Cache configurations differ substantially: the Ultra 9 has 192 KB L1 per core, 3 MB L2 per core, and 36 MB shared L3; the 300T has 80 KB L1 per core, 1.25 MB L2 per core, and 6 MB shared L3. The Ultra 9 supports only DDR5 memory with 102.4 GB/s bandwidth and ECC support. The 300T supports DDR4 and DDR5 with no recorded bandwidth and no ECC support.

The Ultra 9 uses Intel BGA 2114 socket and has an unlocked multiplier. The 300T uses Intel Socket 1700 and has a locked multiplier. The Ultra 9 includes Arc Xe-LPG Graphics with 64 execution units, while the 300T includes UHD Graphics 710. PCIe support is Gen 5 with 20 lanes for the Ultra 9 and Gen 5 with 16 lanes for the 300T. The Ultra 9 is a mobile processor released on 2026-03-16, while the 300T is a desktop processor released on 2024-01-07 with a launch MSRP of $82.

Where Each One Wins

The Intel Core Ultra 9 290HX Plus wins in multi-threaded performance due to its 24-core, 24-thread configuration. Its 36 MB shared L3 cache and 102.4 GB/s memory bandwidth support data-intensive workloads. The benchmark data shows an average score of 79574, with specific strengths in integer math (164839), floating point math (201773), and multithread performance (59439). Its 95th percentile ranking confirms top-tier status. The Arc Xe-LPG Graphics with 64 execution units provides more capable integrated graphics than the 300T.

The Intel Processor 300T wins in power efficiency, with a 35 W TDP compared to the Ultra 9's 55 W TDP. Its higher base clock of 3.40 GHz offers snappy single-thread response for basic tasks, though no boost clock is recorded. The 300T supports DDR4 memory, which allows for less expensive memory configurations in desktop builds. Its 50th percentile ranking indicates average performance among all CPUs, suitable for basic computing duties.

The Ultra 9 290HX Plus also wins in ECC memory support, PCIe lane count, and transistor count. The 300T wins in memory flexibility with DDR4 and DDR5 support, and in desktop socket compatibility with Intel Socket 1700. The Ultra 9's mobile BGA 2114 socket limits it to laptop or embedded applications. The 300T's desktop form factor and lower power draw make it suitable for compact, low-power systems.