Where I live, DRAM-less SSDs are a lot cheaper (half the price). Most sources online say "go for an SSD with DRAM". But I wonder, are cases in which a DRAM-less SSD will do just fine?
My main focus is resurrecting old laptops (from 2006 to 2015), installing GNU/Linux and an sometimes investing in an SSD will give them a performance boost, but the budget is limited because I can't sella uch an old laptop at a non very budgety price.
As it was already commented Host Memory Buffer can to some degree replace the DRAM cache (if the SSD supports it and even then the implementation can be bad). But the specification is from 2014 so unlikely that Laptops from up to 2015 will support it.
When there is no DRAM cache on the SSD, the SSD will use the NAND flash cells as cache. This results in more wear and a shorter lifetime. Also, when the SSD gets filled up, the SSD gets significantly slower since there will be less free NAND cells to use as Cache.