Intel Core i9 9900X vs Intel Core Ultra X9 388H
CPU · Specs Compare
General Parameters
Release Date
Oct 2018
Jan 2026
Manufacturer
Intel
Intel
Type
Desktop
Laptop
Instruction Set
x86-64
x86-64
Core Architecture
Skylake
Panther Lake
Processor Number
i9-9900X
388H
Integrated Graphics
N/A
Arc B390
Generation
—
Ultra X9 (Panther Lake-H)
Package
Manufacturing Process
14 nm
2 nm
Socket
LGA-2066
FCBGA2540
Power Consumption
165 W
15-25 W
Peak Operating Temperature
92 °C
100 °C
Max Turbo Power Consumption
—
80 W
Foundry
—
Intel
Package
—
FC-BGA
CPU Performance
Performance Cores
10
4
Performance Core Threads
20
4
Performance Core Base Frequency
3.5 GHz
2.1 GHz
Performance Core Turbo Frequency
4.4 GHz
5.1 GHz
Total Core Count
10
16
Total Thread Count
20
16
Bus Frequency
100 MHz
100 MHz
Multiplier
35x
21
L1 Cache
64 K per core
192 K per core
L2 Cache
1 MB per core
2560 K per core
L3 Cache
20 MB shared
18 MB shared
Unlocked Multiplier
Yes
No
Efficiency Cores
—
12
Efficiency Core Threads
—
12
Efficiency Core Base Frequency
—
1.6 GHz
Efficiency Core Turbo Frequency
—
4 GHz
SMP
—
1
Memory Parameters
Memory Types
DDR4-2666
LPDDR5X-9600
Max Memory Size
128 GB
96 GB
Max Memory Channels
4
2
Max Memory Bandwidth
85 GB/s
153.6 GB/s
ECC Memory Support
No
No
Miscellaneous
PCIe Version
3.0
5.0
PCIe Lanes
44
12
Extended Instruction Set
SSE4.1, SSE4.2, AVX-2, AVX-512
—
Graphics Card Parameters
Integrated Graphics
—
true
GPU Base Frequency
—
300 MHz
GPU Max Dynamic Frequency
—
2500 MHz
Shader Units
—
1536
Texture Units
—
48
Raster Operation Units
—
24
Execution Units
—
12
Power Consumption
—
45
AI Accelerator
Theoretical performance
—
50 TOPS
Benchmark
Cinebench R23
1,182
—
Cinebench R23
13,994
—
Geekbench 6
1,455
3,026
Geekbench 5
1,165
—
Geekbench 6
10,273
17,541
Geekbench 5
10,704
—
Passmark CPU
2,565
—
Passmark CPU
21,833
—
Cinebench 2024
—
130
▲ Specs Compare
Data sourced from official specifications and benchmark tests.