CPU Comparison
Intel Core Ultra 7 255HX vs Intel Core Ultra 9 185H
A side-by-side comparison of specs, performance and value. The Intel Core Ultra 7 255HX is a high-performance mobile processor designed for enthusiast gaming laptops and portable workstations. Launched in early 2025, it is based on the Arrow Lake-HX architecture, featuring a robust 20-core configuration without Hyper-Threading. This setup includes 8 'Lion Cove' P-Cores and 12 'Skymont' E-Cores, operating across 20 threads. Manufactured on TSMC's 3nm process, the chip boasts a die size of 243 mm² and packs 17.8 billion transistors. It reaches impressive clock speeds, with a base frequency of 2.4 GHz and a maximum turbo of 5.2 GHz. The processor features an unlocked multiplier, a rare feature for mobile chips, allowing OEMs and extreme enthusiasts to push performance boundaries. With a base power of 55W and a maximum turbo power of 160W, it delivers desktop-class performance in a mobile form factor, paired with Arc Xe-LPG Graphics 64EU and a 13 TOPS NPU.
The Bottom Line
Overview & Launch
Specifications Compared
Performance Compared
Productivity
Rivals desktop CPUs in multi-threaded workloads like Cinebench and Blender.
16 cores and 22 threads handle heavy creative workloads easily.
Gaming
Exceptional gaming performance when paired with a high-end discrete GPU, limited only by power constraints.
Arc 128EU is a huge upgrade over older Intel iGPUs, capable of 1080p medium gaming.
Virtualization
Excellent for running multiple VMs locally on a workstation laptop.
Good for running VMs on a laptop, though limited by thermal constraints.
Efficiency
Low efficiency at idle compared to standard H-series, designed for plugged-in performance.
Meteor Lake is efficient, but the 185H is a 45W part and can get warm.
Specialized Performance
AI / ML
- NPU 3 provides 13 TOPS
- Total platform AI is 33 TOPS
- Sufficient for basic background AI tasks but not heavy local LLMs
- 11 TOPS NPU is sufficient for background blur and noise cancellation
- Does not meet Copilot+ PC standards (requires 40+ TOPS)
- AI tasks often fall back to CPU/GPU for maximum performance
Content Creation
Gaming
- High single-core boost clocks minimize bottlenecks
- Best paired with RTX 4080/4090 mobile GPUs
- Not intended for thin-and-light gaming
- Arc 128EU graphics allow decent 1080p gaming without a dGPU
- Supports hardware ray tracing (though limited)
- Performance depends heavily on laptop cooling solution
Industry Impact
Best CPU by Use Case
Target Audience
Strengths & Weaknesses
Pros
- Massive 20-core count
- Unlocked multiplier for mobile overclocking
- 20 PCIe Gen 5 lanes
- Excellent 5.2 GHz single-core boost
- Desktop-class performance
Cons
- High power consumption (160W turbo)
- Modest 13 TOPS NPU
- Requires massive cooling solution
- Poor battery life in laptops
Pros
- Massive 16-core, 22-thread configuration
- Powerful Arc 128EU integrated graphics
- Includes a dedicated NPU for AI
- High 5.1 GHz boost clock
- Supports DDR5 and LPDDR5X
Cons
- NPU is weak (11 TOPS) by modern standards
- Can run hot under sustained 115W loads
- Replaced quickly by Lunar Lake
- High power consumption compared to newer mobile chips
Competitors & Alternatives
Intel Core Ultra 7 255HX
- AMD Ryzen 9 7945HXRival
Mobile
- AMD Ryzen 9 8945HXRival
Mobile
- Compare head-to-headIntel Core Ultra 9 285HXRival
Mobile
- Compare head-to-headIntel Core i9-14900HXRival
Mobile
- AMD Ryzen 9 7945HX3DRival
Mobile
Slightly higher base and boost clocks for similar price.
Compare head-to-headBetter choice for thin-and-light designs with good battery life.
Compare head-to-headPrevious generation, often available at a discount.
Compare head-to-head- AMD Ryzen 7 8845HSAlt
More efficient alternative for moderate gaming.
Intel Core Ultra 9 185H
- AMD Ryzen 9 8945HSRival
Mobile
- Compare head-to-headApple M2 ProRival
Mobile
- AMD Ryzen 9 7940HSRival
Mobile
Much better efficiency and AI performance if you don't need 16 cores.
Compare head-to-headPrevious gen, cheaper, similar CPU performance but no NPU/Arc.
Compare head-to-head- Alt
Better battery life and efficiency for macOS users.
Compare head-to-head - AMD Ryzen 7 8845HSAlt
More budget-friendly alternative with similar performance.
Our Verdict on Each
A powerhouse mobile CPU offering unlocked overclocking and massive multi-core throughput for desktop replacements.
Best for: Desktop replacement gaming laptop
Read the full reviewA solid first-generation Core Ultra chip that brought tiled architecture and NPUs to laptops, offering great multi-core and iGPU performance.
Best for: Buying a high-performance creator or gaming laptop at a discount.
Read the full reviewFrequently Asked Questions
Which is better, Intel Core Ultra 7 255HX or Intel Core Ultra 9 185H?
Based on our editorial ratings, the Intel Core Ultra 7 255HX comes out ahead with a score of 8.8/10. 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 7 255HX or Intel Core Ultra 9 185H?
For gaming, the Intel Core Ultra 9 185H leads with a gaming performance score of 80/100 among Intel Core Ultra 7 255HX and Intel Core Ultra 9 185H.
Which uses less power?
The Intel Core Ultra 9 185H has the lowest rated TDP. Power draw across these chips: Intel Core Ultra 7 255HX (55 W), Intel Core Ultra 9 185H (45 W).
Do Intel Core Ultra 7 255HX and Intel Core Ultra 9 185H use the same socket?
No. They use different sockets (Intel Core Ultra 7 255HX: Intel BGA 2114, Intel Core Ultra 9 185H: BGA 2049), so each needs a compatible motherboard.
Which has more cores?
The Intel Core Ultra 7 255HX has the most cores. Core counts: Intel Core Ultra 7 255HX (20 cores), Intel Core Ultra 9 185H (16 cores).
Which is faster in multi-core benchmarks?
The Intel Core Ultra 9 185H posts the highest multi-core benchmark score. Multi-core results: Intel Core Ultra 7 255HX (0), Intel Core Ultra 9 185H (16,000). Benchmark figures are approximate and workload-dependent.