Intel Core Ultra 9 290HX Plus: Maximum Arrow Lake HX, But Not a New Architecture

The Intel Core Ultra 9 290HX Plus is the flagship mobile processor of the Core Ultra 200HX Plus series for gaming laptops and mobile workstations. By its name, it seems like a significant step up from the Core Ultra 9 285HX, but in essence, it is not a new generation but rather an improved version of Arrow Lake HX. The main idea behind Plus is to squeeze out a bit more from the already familiar platform through frequency increases, accelerated inter-die communication, and software optimizations.

This is an important nuance for the buyer. The Core Ultra 9 290HX Plus should not be perceived as a fundamentally new processor. It is still part of the Core Ultra Series 2, Arrow Lake, with the same overall logic: a powerful CPU for thick laptops that nearly always operate in tandem with discrete NVIDIA GeForce RTX graphics.

What Plus Actually Means

The Plus designation does not imply a new architecture or a sharp increase in the number of cores. Intel has retained the same basic formula: 8 performance P-cores and 16 energy-efficient E-cores. In total, there are 24 cores and 24 threads, as Hyper-Threading is not utilized in this architecture.

The main differences in the Plus version are subtler: increased die-to-die frequency and the Intel Binary Optimization Tool. In practice, this does not equate to a universal performance boost in all scenarios, but rather an attempt to extract higher performance in supported situations. Intel claims up to an 8% performance increase in gaming and up to a 7% in Cinebench 2026 Single Thread compared to the Core Ultra 9 285HX, but such figures should be read carefully. Much depends on the specific game, laptop, cooling, settings, and the optimization functioning itself.

Therefore, Plus is better understood not as a revolution, but as the final polish of the HX flagship. It is not a new class of processor, but a more aggressively optimized version of the familiar 285HX.

Architecture and Specifications

The Core Ultra 9 290HX Plus has 24 cores: 8 P-cores and 16 E-cores. The maximum frequency of the P-core reaches 5.5 GHz, and for the E-core, it is 4.7 GHz. The cache is large: 36 MB Intel Smart Cache and 40 MB L2. The base power is 55 W, and the maximum turbo power is 160 W.

And here is where the most important aspect begins. 160 W in a laptop is not just a pretty number in the specifications, but a requirement for the chassis. For the 290HX Plus to function as a flagship, it requires a powerful cooling system, a high power limit, and a decent thermal headroom. In a weak chassis, such a processor will quickly run into issues not with its architecture, but with heat, noise, and manufacturer limitations.

It's also essential to remember: this is Arrow Lake HX, not Panther Lake, nor Intel 18A. Therefore, the 290HX Plus should not be mixed with the new mobile Core Ultra Series 3. Here, the focus is not on a new manufacturing process but on maximizing performance within the existing HX platform.

How It Differs from Core Ultra 9 285HX

On paper, the Core Ultra 9 290HX Plus is very similar to the Core Ultra 9 285HX. Both have 24 cores, 24 threads, 36 MB L3, 40 MB L2, a P-core frequency of up to 5.5 GHz, and 55/160 W limits. Therefore, one should not expect a significant gap between them.

The difference is more about refinement. The 290HX Plus has a higher maximum frequency for the E-core, a claimed faster inter-die communication, and an emphasis on the Binary Optimization Tool. In other words, this is not a "step-up" processor, but a more finely tuned version of the same flagship class.

Performance

In early benchmarks, the Core Ultra 9 290HX Plus appears to be one of the fastest mobile x86 processors. It scores approximately 3170 points in Geekbench 6 Single Core and around 20800 points in Multi-Core. In PassMark, the score is roughly around 64800 points CPU Mark and about 5000 points in Single Thread. These figures are strong, but they are better interpreted as early benchmarks: for such processors, the final result heavily depends on the specific laptop.

For real-world usage, this is on par with an expensive gaming laptop or a mobile workstation. The processor is well-suited for gaming with a powerful discrete graphics card, compiling large projects, video editing, 3D rendering, and heavy multitasking.

However, the index of the 290HX Plus alone guarantees nothing. In a laptop with an RTX 5090 Laptop, high GPU TGP, and good cooling, such a CPU makes sense. In a chassis with limited power limits, a noisy cooling system, or a high premium just for the word "Plus," the advantages can quickly dissipate.

Graphics, NPU, and the Real Meaning of the Processor

The integrated graphics here are secondary. The Core Ultra 9 290HX Plus uses Intel Graphics with 4 Xe-cores and a frequency of up to 2.0 GHz. This is sufficient for image output, video playback, and basic tasks without a discrete graphics card, but purchasing such a processor solely for the iGPU makes little sense. Its ideal environment is a laptop with a powerful GeForce RTX.

The NPU is also not the main character. Intel AI Boost provides up to 13 TOPS, and the overall platform score reaches 36 TOPS INT8. This is useful for local AI functions, camera effects, noise reduction, and some accelerated tasks, but heavy AI scenarios will still be handled by discrete GPU or in the cloud.

Thus, the purpose of the 290HX Plus is simple: it is neither an AI chip nor a processor designed for integrated graphics. It is a CPU for premium laptops where maximum performance is needed alongside a powerful discrete graphics card.

Who Is the Intel Core Ultra 9 290HX Plus For?

The Core Ultra 9 290HX Plus should be considered if you need a laptop for gaming with a powerful GeForce RTX, heavy video editing, 3D rendering, compilation of large projects, streaming, and replacing a desktop PC with a mobile workstation.

However, choosing such a laptop should not be based solely on the processor. In this class, cooling, GPU TGP, memory, SSD, display, noise, and price are equally important. If a model with the Core Ultra 9 285HX is significantly cheaper, has the same graphics card, and better cooling, it may turn out to be the more sensible choice. The difference between a good and a bad laptop here is more crucial than the difference between the 285HX and 290HX Plus.

Conclusion

The Intel Core Ultra 9 290HX Plus is a very powerful mobile processor, but its strength does not lie in revolution. It is a maximally refined Arrow Lake HX: 24 cores, high single-thread performance, 160-watt turbo mode, accelerated internal communication, and software optimizations via the Binary Optimization Tool.

Buying a laptop with the Core Ultra 9 290HX Plus makes sense only if the entire system corresponds to this level: a powerful RTX, high TGP, strong cooling, and reasonable pricing. If the premium is paid only for the "Plus" label, and the chassis and graphics card do not match, the Core Ultra 9 285HX may be just as wise a choice.

The main takeaway is simple: The 290HX Plus makes sense only in a laptop that can cool it effectively. In a weak chassis, it is not flagship performance, but an expensive label in the specifications.