KingSpec OneBoom X400 4TB M.2 SSD Gen4 7300MB/s - Fast NVMe Storage

In this review the KingSpec OneBoom X400 4TB stands out as a clear pick for gamers and creators who need large, fast internal storage without fuss. The single biggest reason to buy is its sustained PCIe 4.0 performance: sequential reads up to 7300MB/s and a combination of 3D TLC NAND with dynamic SLC caching that keeps transfers fluid during long sessions. For anyone moving large game libraries or 4K raw footage, the OneBoom X400 promises noticeably shorter load and export times in a plug-and-play M.2 2280 form factor.

Key Features

• PCIe 4.0 x4 Read Speed: 7300MB/s read performance slashes game load times and accelerates 4K export workflows compared with Gen3 drives.
• 3D TLC NAND with Dynamic SLC Cache: Maintains high sustained write speeds when pushing large 100GB transfers or multi-hour renders by reducing write amplification.
• Intelligent Thermal Guard: Multi-layer graphene heatsink and SMART thermal throttle prevent prolonged speed drops during heavy gaming or rendering sessions.
• Large 4TB Capacity: A 4TB option with 1800TBW endurance gives room for extensive game libraries and video archives without frequent cleanup.
• Low Idle Power and Reliability: 2.5mW idle draw and 2 million hour MTBF help keep laptops and consoles efficient and dependable under sustained use.
• Universal M.2 2280 Compatibility: Tool-free install in PS5, gaming laptops and creator workstations makes swapping storage straightforward.

Who It's For

The OneBoom X400 is best for PC and PS5 gamers who store many large titles and want near-instant load screens, and for video editors working with 4K raw footage who need faster export times. It also suits laptop users who want a high-capacity internal NVMe upgrade with low idle power and robust endurance.

Users who only need a small boot drive or the absolute lowest price per GB for archival backup might look elsewhere, since this model targets high throughput and large capacity rather than budget entry-level storage.

Pros & Cons

Pros

• Very high read throughput for PCIe 4.0 drives, noticeably speeding load and export tasks.
• Sustained performance thanks to 3D TLC NAND with dynamic SLC caching during large transfers.
• Integrated graphene heatsink and SMART thermal control reduce thermal throttling risk on long jobs.
• Large 4TB capacity with strong endurance rating suitable for gaming and content libraries.

Cons

• Performance gains are most visible on PCIe 4.0 systems; older Gen3-only machines will see a smaller advantage.
• Warranty is three years, which is solid but shorter than some premium competitors offer.

Specifications

Form Factor	M.2 2280
Interface	PCIe 4.0 x4 NVMe
Read Speed	Up to 7300MB/s
NAND Type	3D TLC with dynamic SLC cache
Capacity	4TB (1800TBW)
Idle Power	2.5mW
Reliability	2,000,000 hour MTBF; 3 year warranty

Our Verdict

The KingSpec OneBoom X400 4TB is a strong value for gamers and creators who need a roomy, high-throughput internal SSD that stays fast during long sessions. Its PCIe 4.0 speeds, sustained write strategy and thermal guard make it a practical upgrade for PS5, gaming laptops and workstations, offering real time savings in load and export tasks for the price.

Frequently Asked Questions

Will this work in a PS5?
Yes. The drive uses an M.2 2280 form factor and is listed as compatible with PS5 installations when the console supports user-installed M.2 storage.

Is the 7300MB/s speed realistic in daily use?
Max reads are achievable on PCIe 4.0 systems; the dynamic SLC cache and 3D TLC help keep sustained transfers high, though older Gen3 systems will see lower peak rates.

How suitable is the drive for long 4K render sessions?
The combination of multi-layer graphene heatsink, SMART thermal throttle and NAND caching is designed to prevent speed drops during multi-hour rendering and large file transfers.