Nvidia RTX Spark N1X (20-Core) vs Intel Core Ultra X9 388H
81
out of 100
VS
75
out of 100
We compared two laptop CPUs: the 1.7 GHz Nvidia RTX Spark N1X (20-Core) with 20-cores against the 2.1 GHz Intel Core Ultra X9 388H with 16-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.
Review
Single-Core Performance
Performance in single-threaded apps and benchmarks
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of power consumption
Integrated Graphics
iGPU capabilities for gaming and 3D-intensive tasks
Choose your main usage scenario to recalculate the Final Score and see which CPU suits your needs.
Key Differences
Advantages of Nvidia RTX Spark N1X (20-Core)
- Newer - released 9 months later
- More powerful Nvidia N1X (48SM) integrated graphics: 31.2 vs 7.7 TFLOPS
- Around 146.4 GB/s (95%) higher theoretical memory bandwidth
- Has 4 more physical cores
- Supports up to 128 GB LPDDR5X-9400 RAM
Advantages of Intel Core Ultra X9 388H
- More modern manufacturing process – 2 versus 3 nanometers
- 24% higher Turbo Boost frequency (5.1 GHz vs 4.1 GHz)
Test in Benchmarks
Comparing the performance of CPUs across various tasksCinebench
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
| Cinebench 2026 (Single) | - | 539 |
| Cinebench 2026 (Multi) | 6787 | 5375 |
Cinebench Scores (50th and 88th place)
GeekBench v6
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
| File compression | - | 1490 MB/sec |
| Clang compilation | - | 141.1 Klines/sec |
| HTML 5 Browser | - | 477.4 pages/sec |
| PDF Renderer | - | 539.5 Mpixels/sec |
| Text processing | - | 323.1 pages/sec |
| Background blur | - | 61.5 images/sec |
| Photo processing | - | 177.3 images/sec |
| Ray tracing | - | 28.4 Mpixels/sec |
PassMark
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
| Integer math | - | 91.2 GOps/sec |
| Floating point math | - | 112.9 GOps/sec |
| Find prime numbers | - | 357M Primes/sec |
| Random string sorting | - | 43.7M Strings/sec |
| Data encryption | - | 28.4 GBytes/sec |
| Data compression | - | 360.2 MBytes/sec |
| Physics | - | 3207 Frames/sec |
| Extended instructions | - | 29.7B Matrices/sec |
Blender
Blender CPU
Performance Per Watt
| Cinebench 2024 / Watt | 38.4 PPW | 53.7 PPW |
| Geekbench 6 Multi / Watt | 451 PPW | 701.8 PPW |
| Passmark CPU Mark / Watt | 938.3 PPW | 1468.8 PPW |
| Blender / Watt | 8.96 PPW | 11.89 PPW |
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.
Specifications
Full technical specification of Nvidia RTX Spark N1X (20-Core) and Intel Core Ultra X9 388HGeneral
| Vendor | Intel | Intel |
| Released | September 3, 2026 | January 5, 2026 |
| Type | Laptop | Laptop |
| Instruction Set | ARMv9 | x86-64 |
| Codename | Blackwell | Panther Lake |
| Model number | AHJ11488B | 388H |
| Integrated GPU | Nvidia N1X (48SM) | Arc B390 |
| Rival Equivalent | - Apple M5 Max (40-сore GPU) | - AMD Ryzen AI Max 390 |
Intel CPU rating (15th and 29th place)
CPU
| P-Cores | 10 | 4 |
| P-Threads | 10 | 4 |
| Base Frequency (P) | 1.7 GHz | 2.1 GHz |
| Turbo Boost Frequency (P) | 4.1 GHz | 5.1 GHz |
| E-Cores | 10 | 12 |
| E-Threads | 10 | 12 |
| Base Frequency (E) | 1.5 GHz | 1.6 GHz |
| Turbo Boost Frequency (E) | 2.8 GHz | 4 GHz |
| Total Cores | 20 | 16 |
| Total Threads | 20 | 16 |
| Bus Frequency | 100 MHz | 100 MHz |
| Multiplier | 41x | 21x |
| L1 Cache | 128K (per core) | 192K (per core) |
| L2 Cache | 2MB (per core) | 3MB (per core) |
| L3 Cache | 16MB (shared) | 18MB (shared) |
| Unlocked Multiplier | No | No |
Package
| Fabrication Process | 3 nm | 2 nm |
| TDP (PL1) | 45 W | 15-25 W (configurable) |
| Max. Boost TDP (PL2) | 85 W | 80 W |
| Socket | Custom | FCBGA2540 |
| Peak Temperature | - | 100°C |
| Die Size | 207.85 mm² | - |
Laptop processors ranking (20th and 34th place)
iGPU
| Integrated Graphics | Nvidia N1X (48SM) | Intel Arc B390 |
| GPU Base Clock | 1665 MHz | 300 MHz |
| GPU Boost Clock | 2535 MHz | 2500 MHz |
| Shading Units | 6144 | 1536 |
| TMUs | 192 | 48 |
| ROPs | 48 | 24 |
| Execution Units | 48 | 12 |
| TGP | - | 30 W |
iGPU FLOPS
More info: Arc B390 compared to Nvidia N1X (48SM)
Memory Support
| Memory Types | - LPDDR5X-9400 | - LPDDR5X-9600 |
| Max. Memory Size | 128 GB | 96 GB |
| Memory Channels | - | 2 |
| Max. Memory Bandwidth | 300 GB/s | 153.6 GB/s |
| ECC Support | No | No |
Misc
| Official Site | - | Intel Core Ultra X9 388H official page |
| PCI Express Version | 5.0 | 5.0 |
| PCI Express Lanes | - | 12 |
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