Intel Core Ultra X9 388H

Cores: 16
L3 cache: 18MB (shared)
TDP: 15-25 W (max. boost up to 80 W)
Transistor size: 2 nm

Core Ultra X9 388H - laptop processor produced by Intel for socket FCBGA2540 that has 16 cores and 16 threads. The base clock frequency of the CPU is 2100 MHz, but due to Turbo Boost technology, it can perform up to 5100 MHz. The size of the L3 cache is 18 MB. Please note that this chip has integrated graphics Intel Arc B390.

Review

Single-Core Performance

84

Multi-Core Performance

58

Power Efficiency

82

Integrated Graphics

99

NanoReview Final Score

75

Compare Intel Core Ultra X9 388H with other CPUs

Cinebench

Reputable cross-platform benchmark for high-performance processors

Cinebench 2024 (Single)

132

Cinebench 2024 (Multi)

1343

Cinebench 2026 (Single)	539
Cinebench 2026 (Multi)	5375

Cinebench Scores - 85th place

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GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps

Geekbench 6 (Single-Core)

3026

Geekbench 6 (Multi-Core)

17545

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]

PassMark

Synthetic test that focuses on raw computational performance for low-level functions

Passmark CPU (Single-Core)

4297

Passmark CPU (Multi-Core)

36720

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

Sources: PassMark [3] – 60 samples

Blender

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

Blender CPU

297.18

Performance Per Watt

Shows the score you get per each watt of PL1 TDP

Cinebench 2024 / Watt	53.7 PPW
Geekbench 6 Multi / Watt	701.8 PPW
Passmark CPU Mark / Watt	1468.8 PPW
Blender / Watt	11.89 PPW

These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.

General

Vendor	Intel
Released	January 5, 2026
Type	Laptop
Instruction Set	x86-64
Codename	Panther Lake
Model number	388H
Integrated GPU	Arc B390
AMD Equivalent	- AMD Ryzen AI Max 390

Intel CPU rating - 28th place

CPU

Performance Cores
P-Cores	4
P-Threads	4
Base Frequency (P)	2.1 GHz
Turbo Boost Frequency (P)	5.1 GHz

Efficient Cores
E-Cores	12
E-Threads	12
Base Frequency (E)	1.6 GHz
Turbo Boost Frequency (E)	4 GHz

Total
Total Cores	16
Total Threads	16
Bus Frequency	100 MHz
Multiplier	21x
L1 Cache	192K (per core)
L2 Cache	3MB (per core)
L3 Cache	18MB (shared)
Unlocked Multiplier	No

Package

Fabrication Process	2 nm
TDP (PL1)	15-25 W (configurable)
Max. Boost TDP (PL2)	80 W
Socket	FCBGA2540
Peak Temperature	100°C

Laptop processors ranking - 32nd place

iGPU

Integrated Graphics	Intel Arc B390
GPU Base Clock	300 MHz
GPU Boost Clock	2500 MHz
Shading Units	1536
TMUs	48
ROPs	24
Execution Units	12
TGP	30 W

iGPU FLOPS

7.7 TFLOPS

See also: Intel Arc B390 – integrated graphics of Intel Core Ultra X9 388H

Memory Support

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

Misc

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

Competitors

1. Intel Core Ultra X9 388H vs Intel Core Ultra X7 368H (1)

2. Intel Core Ultra X9 388H vs Intel Core Ultra 9 386H

Compare other CPUs (460+)