PNY CS2241 2TB M.2 NVMe Gen4 SSD: speeds, specs and who it suits

The PNY CS2241 is a 2TB internal solid state drive in the M.2 format, using the NVMe protocol over a PCIe Gen4 x4 connection. It is meant as a mainstream storage upgrade for desktops and laptops that have a compatible M.2 slot. Here is what its numbers mean and what to confirm before fitting one.

What M.2, NVMe and Gen4 x4 actually mean

M.2 describes the shape of the drive: a small circuit board, about the size of a stick of gum, that plugs straight into a slot on the motherboard with no cables. NVMe is the language the drive uses to talk to the processor, and it was designed for flash memory. Gen4 x4 refers to the link, which uses four PCIe lanes at fourth-generation speeds.

PNY says this gives high bandwidth and low latency, and that it is faster than SATA-based SSDs. That fits the general picture: SATA drives top out at around 550 MB/s, while a Gen4 NVMe drive can be several times quicker in sequential transfers.

What the speed figures mean in practice

PNY rates the CS2241 at up to 5,000 MB/s sequential read and up to 4,200 MB/s sequential write. Sequential speed is how quickly the drive moves one large, continuous file, such as a video project, a game install or a disk image. These are "up to" figures, so real results depend on the system, the file type and how full the drive is.

PNY also says the drive can boot, power down and load applications up to eight times faster than SATA SSDs. For everyday tasks, the gain people notice most is usually in start-up, big file copies and loading large applications. Web browsing and document work tend to feel similar on any SSD.

No moving parts

Like all SSDs, the CS2241 has no spinning platters. PNY describes it as highly durable and less likely to fail because of that. In general, solid state storage handles knocks and vibration better than a hard drive, which is useful in laptops. It is also silent and light, at roughly 0.1 lb.

Capacity and the warranty

The 2TB size gives room for a large game library, photo and video collections, or a full system plus working files. PNY backs the drive with a five-year limited warranty or a set TBW (terabytes written), whichever comes first, along with technical support. TBW is the total amount of data the drive is rated to have written to it over its life. For most home users it is a figure that is very hard to reach.

Who it suits

It suits people upgrading from a hard drive or a SATA SSD, builders adding a second drive, and laptop owners whose machine has a free Gen4 M.2 slot. Heavy users who work with large video files or big datasets can benefit most from the higher sequential speeds.

What to check before you buy

• Slot type and length: confirm your machine has an M.2 slot that takes NVMe drives, and check that it accepts the 2280 length. Some M.2 slots are SATA-only.
• PCIe generation: the drive is designed for a Gen4 slot. Gen3 slots typically still work but limit the speed.
• Heat: fast drives can get warm. Check whether your motherboard or laptop provides a heatsink or airflow near the slot.
• Height clearance: in thin laptops, check the space above the slot.
• Cloning or fresh install: plan how you will move your existing system and data across, and back up first.
• Firmware and drivers: check the manufacturer's site for current guidance.

The short version

• A 2TB M.2 NVMe Gen4 x4 internal SSD from PNY, model M280CS2241-2TB-RB.
• Rated at up to 5,000 MB/s sequential read and 4,200 MB/s sequential write.
• No moving parts, and a five-year limited warranty or TBW.
• Needs a compatible M.2 NVMe slot; a Gen4 slot gives the full speed.

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