Past few years, prices on flash memory have continued to drop. SATA SSDs are now only marginally more expensive than HDDs at lower capacities so if you haven’t upgraded yet, the time has never been better!

One of the bigger breakthroughs for PC hardware in modern memory has been the solid state drive. And with data transfer speeds many multiples of traditional 7200 RPM and even 10,000 RPM drives, it’s easy to see why. Not only are boot and shut down speeds much faster with SSDs, but all aspects of the system are sped up as well.

Modern motherboards use SATA III which maxes out at a throughput of 600MB/s (or 300MB/s for SATA II, in which case, it’s time to upgrade). Via that connection, most SSDs will provide Read/Write speeds in the neighborhood of 530/500 MB/s. For comparison, a 7200 RPM SATA drive manages around 100MB/s depending on age, condition, and level of fragmentation. NVMe drives, on the other hand, provide write speeds as high as 3500MB/s. That’s 7x over SATA SSDs and as much as 35x over spinning HDDs!

So by far, if price is not an issue, NVMe SSD is the best option especially if your application is hard drive intensive or requires constant hard drive reads and writes.

Source: 

https://www.velocitymicro.com/blog/nvme-vs-m-2-vs-sata-whats-the-difference/