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Green printed circuit board with black controller and memory chips in M.2 2280 stick form factor

HP

HP PM9C1 512GB NVMe PCIe 4.0 x4 M.2 2280 internal SSD

SKU CH-Q98X-ZCATS MPN PM9C1

512 GB M.2 2280 NVMe SSD with PCIe 4.0 x4 interface delivering up to 4950 MB/s read and 2500 MB/s write speeds

  • Total capacity512 GB
  • Sequential read speedUp to 4,950 MB/s
  • Sequential write speedUp to 2,500 MB/s
  • Interface typePCI-Express 4.0 x4
  • Form factorM.2 2280
  • Connection75 Pins
  • Fast PCIe 4.0 x4 sequential read up to 4950 MBps
  • Strong sequential write up to 2500 MBps for large files
  • High random 4KB read up to 550000 IOPS for snappy OS
  • Samsung controller and NAND deliver OEM-grade reliability
  • Standard M.2 2280 75-pin fits laptops and desktops

Capacity and interface

This is a 512GB internal solid-state drive using the M.2 2280 form factor and a PCIe 4.0 x4 NVMe interface. It is built with Samsung NAND and controller for reliable daily workloads. The drive suits laptops, desktops, mini PCs and workstations needing a fast boot or primary storage device. Sequential speeds reach 4950 MBps read and 2500 MBps write.

Who should choose this drive

It fits users upgrading from a slower SATA SSD or adding responsive storage for operating systems, applications and everyday files. Sustained write performance drops to 28 MBps, so continuous heavy writes such as video capture or large database workloads will throttle. Buyers needing steady high sustained throughput should consider drives rated for that workload.

The specification that decides fit

The PCIe 4.0 x4 NVMe interface determines whether the host can use the rated 4950 MBps read and 2500 MBps write speeds. Systems limited to PCIe 3.0 or SATA will not reach these figures. Verify the motherboard or laptop slot supports PCIe 4.0 x4 NVMe before purchase.

How it compares

Measured against everything we stock in Internal NVMe & SATA SSDs, at today’s prices. Recalculated every night.

Price $69.99
Cheaper than about 83% of the 1,994 comparable items (median $180.49).
Total capacity 512 GB
Lower than about 60% of the 1,368 comparable items (median 1 TB).
Sequential read speed Up to 4,950 MB/s
Higher than about 70% of the 1,180 comparable items (median 2,400 MB/s).
Price per TB $136.70 per TB
Cheaper than about 64% of the 1,362 comparable items (median $165.50 per TB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameHP
Model nameHP
Total capacity512 GB
Performance
Sequential read speedUp to 4,950 MB/s
Sequential write speedUp to 2,500 MB/s
Sustained sequential write rateUp to 28 MB/s
Sustained random 4KB readUp to 550,000 IOPS
Sustained random 4KB writeUp to 550,000 IOPS
Random read (4K)Up to 400,000 IOPS
Storage
Controller chipSamsung
Ports & slots
Interface typePCI-Express 4.0 x4
Connection75 Pins
Size & build
Form factorM.2 2280
More details
Seek time0.1 ms
Ready boostYes

Questions about this item

Does my motherboard need an M.2 slot that accepts a 22 mm by 80 mm PCIe 4.0 x4 NVMe drive for this HP PM9C1 to work?

Yes, the drive uses the standard M.2 2280 form factor and requires an M.2 socket wired for PCIe 4.0 x4 NVMe signalling.

If I install this PM9C1 in a system that only supports PCIe 3.0 x4, will the drive still function?

The SSD is backward compatible and will operate at PCIe 3.0 x4 speeds, though sequential reads will be lower than the 4,950 MB/s ceiling.

After installation, how can I confirm the PM9C1 is running at its advertised PCIe 4.0 x4 link speed?

Check the negotiated link width and generation in your OS device manager or a tool such as CrystalDiskInfo; it should report PCIe 4.0 x4.

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