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<\/a><\/p>\nAccording to a Polish review, the controller should be Innogrit RainierQX <\/a>. This is a quad channel DRAMless controller manufactured on 12nm FinFET process (this process is used for the Phison E18 as well, however the E16 was a 28nm die), which judging by the very nice SSD power consumption has been a good choice.<\/p>\n By the way, the modules are not fitted with a cooler out of the box, but given their power consumption levels, it is not necessary. However they do come with a thin heat spreader, allegedly made of grafen.<\/p>\n Performance under heavy load might lack compared to Phison E16-using drives due to the the absence of a DRAM cache. But if you refrain from battering the SSD too hard (e.g. running multiple complex I\/O operations at once) even DRAMless SSDs like this aren’t that bad these days, thanks to the common usage of HMB technology.<\/p>\n According to specifications the Patriot P400 should be capable of sequential reading with a speed up to 5000 MB\/s and writing (into the SLC cache) up to 4800 MB\/s, being faster than SSDs with Phison E16 in that stat. The 512GB version comes with a bit slower write speed at 3300 MB\/s. However both versions list the same random access values: writing at up to 620 000 IOPS and reading up to 550 000 IOPS.<\/p>\n The modules have a three year warranty, while more expensive SSDs usually come covered with five years warranty. The writing endurance of the 512 GB module is rated for 400 TB and the 1 TB version is rated for 800 TB \u2013 as already mentioned, 800 erase cycles per cell suggest that Patriot uses 3D TLC NAND. And with these TBW ratings, a switch to QLC would be all but impossible even if Patriot wanted to perform one of those unpopular silent specs changes: QLC would not be able to meet these TBW guarantees.<\/p>\n<\/a><\/p>\n<\/a>