CPU Comparison
Intel Core Ultra 9 285HX vs Intel Core Ultra 9 290HX Plus
A side-by-side comparison of specs, performance and value. The Intel Core Ultra 9 285HX is a powerhouse mobile processor engineered for desktop replacement laptops, offering near-desktop performance in a portable form factor. As the flagship of the initial Arrow Lake-HX series, it leverages TSMC's 3nm process to pack 24 cores into a single die, consisting of 8 high-performance 'Lion Cove' P-cores and 16 efficient 'Skymont' E-cores. This configuration makes it exceptionally adept at handling heavily threaded workloads like 3D rendering, complex simulations, and massive code compilations. With a base clock of 2.8 GHz and a maximum turbo frequency of 5.5 GHz, the 285HX delivers blistering single-threaded responsiveness when needed. The processor features an unlocked multiplier, catering to enthusiasts who wish to extract maximum performance. However, this power comes at a cost: a 55W base TDP that can spike to 160W under load, requiring robust cooling solutions. It includes 36MB of shared L3 cache and supports dual-channel DDR5 memory at 6400 MT/s. The 20 PCIe Gen 5 lanes ensure that the CPU can communicate with discrete GPUs and fast NVMe storage without bottlenecks. While it includes Arc Xe-LPG Graphics with 64 EUs for basic display tasks, its true potential is realized in high-end gaming and workstation laptops paired with top-tier discrete graphics, making it the ultimate choice for extreme mobile computing.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Dominates multi-threaded benchmarks, rivaling desktop processors.
Crushes multi-threaded productivity apps like Blender and Premiere Pro.
Gaming
Delivers maximum frame rates in CPU-bound scenarios when paired with top-tier GPUs.
Top-tier gaming performance, especially when paired with high-end discrete GPUs.
Virtualization
Great for local VMs, though dual-channel memory limits extreme server workloads.
Excellent for local VMs, though dual-channel memory is a slight bottleneck vs HEDT.
Efficiency
Highly inefficient at idle and low loads compared to standard mobile chips.
Extremely power-hungry under load, requiring constant AC power.
Specialized Performance
AI / ML
- 13 TOPS NPU included
- Heavy AI lifting relies on CPU and discrete GPU
- Total Int8 TOPS up to 36
- Includes 13 TOPS NPU for basic AI tasks
- Primary AI compute relies on CPU and dGPU
- Combined Int8 TOPS up to 36
Content Creation
Gaming
- Will not bottleneck RTX 4090 mobile
- Excellent 1% low frame rates due to high boost clocks
- Requires massive cooling to prevent thermal throttling
- High single-core boost ensures high framerates
- Won't bottleneck RTX 4090 mobile GPUs
- Requires robust cooling to maintain boost clocks
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Exceptional 24-core multi-threaded performance
- Unlocked multiplier for enthusiast tuning
- 20 PCIe Gen 5 lanes for maximum I/O
- High 5.5 GHz turbo boost for single-threaded tasks
- Supports ECC memory for workstation scenarios
Cons
- Massive 160W power draw requires heavy cooling
- Poor battery life efficiency
- Integrated graphics are underwhelming for non-dGPU scenarios
- BGA socket prevents upgrades
Pros
- Massive 24-core, 24-thread processing power
- Unlocked multiplier for enthusiast overclocking
- 20 PCIe Gen 5 lanes for maximum expandability
- 5.5 GHz max turbo delivers elite single-thread performance
- Supports ECC memory for workstation reliability
Cons
- Extreme power consumption (up to 160W)
- Requires massive, heavy laptop chassis for cooling
- Inefficient for battery-powered use
- Integrated graphics (64EU) are weak compared to the CPU's potential
Competitors & Alternatives
Intel Core Ultra 9 285HX
- AMD Ryzen 9 8945HXRival
Mobile (DTR)
- AMD Ryzen 9 7945HXRival
Mobile (DTR)
- Compare head-to-headIntel Core i9-14900HXRival
Mobile (DTR)
- Compare head-to-headApple M3 MaxRival
Mobile Workstation
- Compare head-to-headIntel Core Ultra 9 290HX PlusRival
Mobile (DTR)
- AMD Ryzen 9 7900HXAlt
Excellent alternative for pure gaming performance.
Slightly lower clocks but same core count, often cheaper.
Compare head-to-headBetter value for mid-range gaming laptops.
Compare head-to-head- AMD Ryzen 9 7945HX3DAlt
Features 3D V-Cache for unmatched gaming cache capacity.
If portability and battery life are more important.
Compare head-to-head
Intel Core Ultra 9 290HX Plus
- AMD Ryzen 9 8945HXRival
Mobile (DTR)
- AMD Ryzen 9 7945HX3DRival
Mobile (DTR)
- Compare head-to-headIntel Core i9-14900HXRival
Mobile (DTR)
- Compare head-to-headApple M2 UltraRival
Workstation
- AMD Ryzen Threadripper 7945HXRival
Mobile (DTR)
Nearly identical performance, often available at a lower price point.
Compare head-to-head- AMD Ryzen 7 8845HSAlt
If portability is more important than raw power.
Slightly lower clocks but same core count for less money.
Compare head-to-head
Our Verdict on Each
A true desktop replacement CPU delivering elite multi-core performance and overclocking headroom, provided the laptop can cool it.
Best for: The Core Ultra 9 285HX is highly recommended for users in the market for a top-tier gaming laptop or mobile workstation who need extreme multi-core performance without stepping up to a desktop. If your workflow involves software development, 3D modeling, or streaming while gaming, the 24 cores will handle the load effortlessly. However, prospective buyers must be aware of the thermal requirements; this chip demands a laptop with exceptional cooling to maintain its 160W turbo power. It is not suitable for students or professionals needing long battery life, as the 55W base power ensures it will deplete batteries quickly when unplugged. Ensure the laptop pairs this CPU with an RTX 4080 or 4090 class GPU to avoid a performance bottleneck. If you value overclocking and raw compute over portability, the 285HX is an excellent, future-proof investment.
Read the full reviewA brute-force mobile CPU that ignores power constraints to deliver true desktop performance, ideal for thick DTR laptops.
Best for: Investing in a laptop powered by the Core Ultra 9 290HX Plus is exclusively recommended for buyers looking at premium, thick-and-heavy gaming laptops or mobile workstations. If you are investing in a machine to replace a desktop for tasks like 3D animation, heavy code compilation, or competitive 4K gaming, this processor will deliver exceptional, tunable performance. Because it is unlocked, it offers a degree of future-proofing for enthusiasts willing to tweak power limits. However, you must ensure the laptop has a robust vapor chamber or multiple fans, as the 160W turbo draw generates substantial heat. Avoid this processor if you prioritize battery life or portability; it is inefficient for light tasks and will drain a battery rapidly. Furthermore, ensure the laptop pairs this CPU with a high-end discrete GPU (RTX 4080/4090 or equivalent) to avoid bottlenecks, as the 64EU integrated graphics are insufficient for the workloads this CPU is designed for.
Read the full reviewFrequently Asked Questions
Which is better, Intel Core Ultra 9 285HX or Intel Core Ultra 9 290HX Plus?
Based on our editorial ratings, the Intel Core Ultra 9 290HX Plus comes out ahead with a score of 9.2/10. That said, the best choice depends on your workload — check the spec and performance breakdown above for gaming, productivity and efficiency differences.
Which is faster for gaming, Intel Core Ultra 9 285HX or Intel Core Ultra 9 290HX Plus?
For gaming, the Intel Core Ultra 9 290HX Plus leads with a gaming performance score of 99/100 among Intel Core Ultra 9 285HX and Intel Core Ultra 9 290HX Plus.
Do Intel Core Ultra 9 285HX and Intel Core Ultra 9 290HX Plus use the same socket?
Yes — all of these CPUs use the Intel BGA 2114 socket, so they share compatible motherboards.