Home > CPU Comparison > Core Ultra X9 388H or Core Ultra X9 378H: what's better?

Intel Core Ultra X9 388H vs Ultra X9 378H

75 out of 100
Intel Core Ultra X9 388H
VS
75 out of 100
Intel Core Ultra X9 378H
Intel Core Ultra X9 388H
Intel Core Ultra X9 378H

We compared two 16-core laptop CPUs: the 2.1 GHz Intel Core Ultra X9 388H against the 2 GHz Ultra X9 378H. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.

  1. Review
  2. Differences
  3. Performance
  4. Specs
  5. Comments

Review

General overview and comparison of the processors
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
NanoReview Final Score
Choose your main usage scenario to recalculate the Final Score and see which CPU suits your needs.
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Key Differences

What are the key differences between 378H and 388H
Advantages of Intel Core Ultra X9 388H
  • 2% higher Turbo Boost frequency (5.1 GHz vs 5 GHz)
Advantages of Intel Core Ultra X9 378H
  • Newer - released 5 months later

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core Ultra X9 388H
vs
Core Ultra X9 378H

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench 2026 (Single) 539 535
Cinebench 2026 (Multi) 5375 5201
Cinebench Scores (21st and 24th place)
Submit your benchmark results

GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps
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 -
Sources: GeekBench [1], [2]

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Integer math 91.2 GOps/sec 92.6 GOps/sec
Floating point math 112.9 GOps/sec 114.5 GOps/sec
Find prime numbers 357M Primes/sec 357M Primes/sec
Random string sorting 43.7M Strings/sec 44.6M Strings/sec
Data encryption 28.4 GBytes/sec 29.8 GBytes/sec
Data compression 360.2 MBytes/sec 386.6 MBytes/sec
Physics 3207 Frames/sec 3404 Frames/sec
Extended instructions 29.7B Matrices/sec 31.3B Matrices/sec
Sources: PassMark [3], [4] – 60 & 1 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 53.7 PPW 52.8 PPW
Geekbench 6 Multi / Watt 701.8 PPW 659.8 PPW
Passmark CPU Mark / Watt 1468.8 PPW 1531.9 PPW
Blender / Watt 11.89 PPW -
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.

Specifications

Full technical specification of Intel Core Ultra X9 388H and Ultra X9 378H

General

Vendor Intel Intel
Released January 5, 2026 May 13, 2026
Type Laptop Laptop
Instruction Set x86-64 x86-64
Codename Panther Lake Panther Lake
Model number 388H 388H
Integrated GPU Arc B390 Arc B390
Rival Equivalent - AMD Ryzen AI Max 390 -
Intel CPU rating (29th and 27th place)

CPU

Performance Cores
P-Cores 4 4
P-Threads 4 4
Base Frequency (P) 2.1 GHz 2.0 GHz
Turbo Boost Frequency (P) 5.1 GHz 5 GHz
Efficient Cores
E-Cores 12 12
E-Threads 12 12
Base Frequency (E) 1.6 GHz 1.6 GHz
Turbo Boost Frequency (E) 3.8 GHz 3.8 GHz
Total
Total Cores 16 16
Total Threads 16 16
Bus Frequency 100 MHz 100 MHz
Multiplier 21x 20x
L1 Cache 192K (per core) 192K (per core)
L2 Cache 3MB (per core) 3MB (per core)
L3 Cache 18MB (shared) 18MB (shared)
Unlocked Multiplier No No

Package

Fabrication Process 2 nm 2 nm
TDP (PL1) 15-25 W (configurable) 15-25 W (configurable)
Max. Boost TDP (PL2) 80 W 80 W
Socket FCBGA2540 FCBGA2540
Peak Temperature 100°C 100°C
Laptop processors ranking (34th and 31st place)

iGPU

Integrated Graphics Intel Arc B390 Intel Arc B390
GPU Base Clock 300 MHz 300 MHz
GPU Boost Clock 2500 MHz 2500 MHz
Shading Units 1536 1536
TMUs 48 48
ROPs 24 24
Execution Units 12 12
TGP 30 W 30 W
iGPU FLOPS
Core Ultra X9 388H
7.7 TFLOPS
Core Ultra X9 378H
7.7 TFLOPS
See: Intel Arc B390 benchmarks

Memory Support

Memory Types - LPDDR5X-9600 - LPDDR5X-9600
Max. Memory Size 96 GB 96 GB
Memory Channels 2 2
Max. Memory Bandwidth 153.6 GB/s 153.6 GB/s
ECC Support No No

Misc

Official Site Intel Core Ultra X9 388H official page Intel Core Ultra X9 378H official page
PCI Express Version 5.0 5.0
PCI Express Lanes 12 12

Cast your vote

Choose between two processors
1 (33.3%)
2 (66.7%)
Total votes: 3

Competitors

1. Intel Core Ultra X9 378H vs Intel Core Ultra X7 358H
2. Intel Core Ultra X9 378H vs AMD Ryzen AI Max 390
3. Intel Core Ultra X9 378H vs Intel Core Ultra 9 386H
4. Intel Core Ultra X9 378H vs AMD Ryzen AI 9 HX 470
5. Intel Core Ultra X9 378H vs Intel Core Ultra 9 290HX Plus
6. Intel Core Ultra X9 378H vs Apple M5 Max (40-сore GPU)
7. Intel Core Ultra X9 378H vs Intel Core Ultra X7 368H
8. Intel Core Ultra X9 378H vs Apple M5 Pro (18-Core)
9. Intel Core Ultra X9 388H vs Intel Core Ultra X7 368H (1)
10. Intel Core Ultra X9 388H vs Intel Core Ultra 9 386H
Compare other CPUs (460+)

Comments

So which CPU will you choose: Intel Core Ultra X9 378H or Ultra X9 388H?
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