Lenovo ThinkBook 14 G9 SSD benchmarks reveal YMTC drive limits

If you own the Lenovo ThinkBook 14 G9, your SSD might be slower than you think under heavy use, and this is the first concrete data showing how Chinese-made NAND stacks up against Samsung and Western Digital in a real laptop. Notebookcheck has just published the first independent benchmark of a YMTC laptop SSD, providing the first tangible performance data for a component previously only discussed in supply chain news. The frustration of buying a modern laptop only to find the storage component is a cost-cutting measure that impacts real-world responsiveness, especially for users who multitask or handle large files.

First independent tests show the drive handles office tasks but struggles with sustained loads

Lenovo is now shipping at least one ThinkBook 14 G9 configuration with an SSD from Yangtze Memory Technologies, better known as YMTC. This 14-inch office laptop is based on Intel Core Ultra 200-series processors. The tested unit uses a 512GB SSD in the M.2 2242 form factor. The drive connects through PCIe NVMe 4.0.

Key Specifications

• SSD Manufacturer: Yangtze Memory Technologies (YMTC)
• SSD Capacity: 512GB
• SSD Form Factor: M.2 2242
• Interface: PCIe NVMe 4.0
• Sequential Read Speed: Up to 3950 MB/s

Notebookcheck measured sequential read speeds of up to 3950 MB/s. The review also reported sequential write speeds of up to 2514 MB/s. This marks the first time they have tested a YMTC laptop SSD. The benchmark results show the drive is fast enough for everyday office use despite lower benchmark scores.

The review notes that the drive had some throttling under load. The 4K performance was also described as below average. This marks a shift in the supply chain as Chinese-made storage appears in mainstream OEM systems outside traditional Samsung, Kioxia, and Western Digital channels.

Lenovo continues to expand its use of YMTC components in global hardware. The ThinkBook 14 G9 represents a practical application of this supply chain shift. Buyers should expect mixed performance depending on their specific workload.