PCIe 3.0 x4 will be 4GB/sec so 4000 MB/sec over 24 ports is only about 160 MB/sec.
Just buy from a reputable reseller. I've had good luck with 8 port cards on eBay with no issues. Not sure if "genuine" or not, but they work like champ.
We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.
PCIe 3.0 x4 will be 4GB/sec so 4000 MB/sec over 24 ports is only about 160 MB/sec.
Just buy from a reputable reseller. I've had good luck with 8 port cards on eBay with no issues. Not sure if "genuine" or not, but they work like champ.