How much faster is an NVMe SSD than a SATA SSD?
How much faster is an NVMe SSD than a SATA SSD? The hard drive of your computer may not have been something that drew much attention as long as it did its job. However, if you are keen on a computer that runs well, you may wish to note the difference between different types of hard drives. [caption id="attachment_38" align="alignleft" width="329"] NVMe SSD[/caption] SSDs are sometimes used in conjunction with HDDs so as to speed up computer systems. An alternate SSD interface is the SATA. This stands for Serial ATA and as you may guess by the word ‘serial’, this is based on serial signaling. SSDs were clearly much better than their ancestors, the HDDs. This is because they allow for faster access and manage to access storage devices much more efficiently thanks to the non-volatile flash memory. SSDs eventually began to replace the HDDs in computers and now act as the first preference for primary storage purposes. With this new interface, computers can thus utilize faster speed capabilities. Up to about two decades ago computers were mainly composed of flattish gray cables, technically known as ATA cables, or PATA.
[caption id="attachment_39" align="alignright" width="213"] SATA SSD[/caption] These were later replaced with SATA, which was way faster. Over the years SATA had to undergo revisions so as to build up more speed. The SATA speed was improved, with the latest SATA 3.3being the best one yet. However, SATA eventually got a competitor when it comes to speed. This is the NVMe. NVMe stands for Non-volatile Memory Express, and it works with PCIe so as to transfer data from Solid State Drives (SSDs), as well as to them. This is considered to be a great improvement. With an NVMe rapid storage in SSDs is enabled as there is a faster interface. The NVMe is indeed faster, but you may wish to get a better idea as to by how much it is actually faster than the SATA. In the case of an NVMe, there are PCIe ports which are specifically built to cater for maximum speed and data. The NVMe makes use of the very high bandwidth of PCIe so as to plug the SSD into the motherboard in a more direct manner, and this automatically boosts the speed levels one can achieve. Consequently, the speed of an NVMe SSD is much higher than the speed that a SATA SSD could ever possibly achieve. To make this simpler, let us just say that the SATA 3 is said to have a data transfer speed of some 6Gb/s. However, in truth, the actual max is about 600MB/s. Now let us consider the NVMe SSD. Generally, PCIe slots are split up into lanes on the motherboard, and you will be able to have these in multiples of four. Every lane has a theoretical speed of 1GB/s, and with 16 lane slots, you thus have a total possible limit of 16GB/s. So the difference between the two SSDs is easy to understand. When it comes to the read and write speeds, generally SATA SSDs have a read-write speed of about 550MB/s, whereas an NVMe SSD can go up to around 3GB/s for reading and 2GB/s for writing.
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