SSDs are faster than older HDDs, especially when the system boots up, so SSDs are our first choice for hard drives. But not all SSDs are the same, and when choosing an SSD hard drive, you may often be confused about NVMe and M2 and sata and other nouns, today we will give you a brief introduction to the difference between them.
Interface type
NVMe and SATA are the communication protocols between the SSD hard drive and the rest of the computerSATA thannvmeSlow.
m.2 Actually, it's onessdinterfaceDimensionsand he can be applied to both nvme and sata, so there is nvme m2 SSD and SATA M2 ssd。
In everyday statements and advertising, m. is often used2 for NVMe, sata for the presence of 2SSD in a 5-inch form factor.
Speed
nvmeDrives are faster than SATA drivesEven if both SSDs are M2The advantages become very obvious when you load or copy files, especially large ones.
The NVMe transfer rate depends first on which PCIe generation you are using, and then on the individual model.
Currently,nvmepcie 3.0 (Gen 3) SSDs have a maximum speed of up to 3500MB per second, whilenvmepcie 4.0 (Gen 4) SSDs can reach a maximum speed of 7500MB per second
The speed of SATA SSDs is usually 500MB per second, the speed is much lower than NVME. But compared to SATA HDD, it is also exponentially improvedrpmhddThe maximum speed is about 160MB per second
Dimensions
In laptops and branded desktops, NVMe SSDs typically take M2 Dimensions. Other forms are less common. SATA SSDs can take 25 inches or m2 forms.
If your laptop has a spare m2 slots, check if you support NVME, SATA, or both before purchasing the drive.