Intel Core Ultra 7 356H vs Intel Core Ultra X9 388H
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Compared 2 processors: Intel Core Ultra 7 356H, vs Intel Core Ultra X9 388H. Below are specs, tests, pros and cons for each device
Review
Single-Thread Perf.
Single-Core Benchmark Score
Multi-Thread Perf.
Multi-Core Benchmark Score
Energy Efficiency
Chip Power Efficiency
Integrated Graphics
iGPU Performance in Games & 3D
Tests & specs
Specs & test comparisonBenchmarks
| Integer Math | 81.8 GOps/s | 90.6 GOps/s |
| Floating-Point Math | 100 GOps/s | 112.3 GOps/s |
| Prime Number Search | 322 M primes/s | 381 M primes/s |
| Random String Sort | 38.2 M strings/s | 48.7 M strings/s |
| Data Encryption | 25 GB/s | 30 GB/s |
| Data Compression | 313.1 MB/s | 392.3 MB/s |
| Physics | 2836 frames/s | 3460 frames/s |
| Extended Instructions | 261 M matrices/s | 329 M matrices/s |
| File Compression | 1200 MB/s | 1490 MB/s |
| Clang Compilation | 119.5 KLines/s | 141.1 KLines/s |
| HTML5 Browser | 241.3 pages/s | 477.4 pages/s |
| PDF Rendering | 421.6 MP/sec | 539.5 MP/sec |
| Text Processing | 295.8 pages/s | 323.1 pages/s |
| Background Blur | 60.7 frames/s | 61.5 frames/s |
| Photo Processing | 117.9 frames/s | 177.3 frames/s |
| Ray Tracing | 22.9 MP/sec | 28.4 MP/sec |
Blender
Performance/Watt
| Geekbench 6 Multi / W | 557.9 PPW | 701.8 PPW |
| PassMark CPU / W | 1297.5 PPW | 1452.7 PPW |
| Cinebench 2024 / W | 43.7 PPW | 53 PPW |
| Blender / W | n/a | 11.89 PPW |
General Info
| Manufacturer | Intel | Intel |
| Announced | January, 5, 2026 | January, 5, 2026 |
| Type | Laptop use | Laptop use |
| Architecture | x86-64 | x86-64 |
| Codename | Panther Lake | Panther Lake |
| Model number | 356H | 388H |
| Integrated GPU | Xe3 Graphics | Arc B390 |
Processor
| Cores | 4 | 4 |
| Threads | 4 | 4 |
| Frequency | 1.9 GHz | 2.1 GHz |
| Max Frequency (Turbo) | 4.7 GHz | 5.1 GHz |
| Cores | 12 | 12 |
| Threads | 12 | 12 |
| Frequency | 1.5 GHz | 1.6 GHz |
| Max Frequency (Turbo) | 3.7 GHz | 4 GHz |
| Cores count | 16 | 16 |
| Threads count | 16 | 16 |
| Bus frequency | 100 MHz | 100 MHz |
| Multiplier | 19x | 21x |
| L1 cache | 192 KB/core | 192 KB/core |
| L2 cache | 2560 KB/core | 2560 KB/core |
| L3 Cache | 18 MB total | 18 MB total |
| Unlocked multiplier | No | No |
Package
| Process tech. | 2 nm | 2 nm |
| Power (TDP) | 15-25 W | 15-25 W |
| Max TDP (Boost) | 80 W | 80 W |
| Socket | FCBGA2540 | FCBGA2540 |
| Critical temp. | 100 °C | 100 °C |
Memory Support
| Memory Type | - LPDDR5X-8533 - DDR5-7200 |
LPDDR5X-9600 |
| Max Size | 128 GB | 96 GB |
| Channels | 2 | 2 |
| ECC support | No | No |
| Max memory bandwidth | n/a | 153.6 GB |
Other
| PCIe Version | 5.0 | 5.0 |
| Max PCIe Lanes | 20 | 12 |
Results
No clear favorite identified yet; updates may follow as new data arrives.
Survey
Total Votes: 0
