In what situation is a DRAM cache truly needed for SSDs?
Pretty much the title, I'm struggling to understand how important is it because I'm reading a lot of conflicting information.
It apparently facilitates random access, but how important is that extra bit of performance for random access?
If you listen to articles or youtubers you get the impression that a DRAM-less drive will be way slower and deteriorate muchfaster (almost like they are a SCAM by the constructors), while reddit posts often emply that it doesnt really matter or make a noticeable difference.
I imagine it matters more for SATA than NVME SSDs, but I have no idea how much.
I also have no idea how an index is supposed to make the SSD last longer.
And it also seems that some CPUs are capable to compensate for it using the system RAM wich is slower, but again, how slow? (and when they say "Some CPUs" i have no idea if it's something rare or if it's like "anything that came out less than 8 years ago")
So yeah, I'm left confused and about to enter a rabbithole