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Rev

Stop editing the post with false information. SATA 6Gbps link is NOT able to transfer 750 MB/s, it is 600 MB/s due to 8-bit bytes being encoded to 10-bit symbols.
– Justme
Commented Feb 13, 2023 at 6:35
the crystaldisk mark on an SSD sata 6 pegged at 766.67 Mb/s read 789.77 Mb/s write shows it is much closer to 750MB/s than 600.
– Rostol
Commented Oct 20, 2023 at 14:24
@Rostol Then it means your test program is wrong. It is physically impossible to transfer that amount of data through 8b10b encoded 6 Gbps link as it only leaves you 4.8 Gbps of uncoded data rate which is 600 MB/s. You can verify that yourself by reading Wikipedia article on SATA or the SATA specifications themselves, instead of blindly believing results of a test program.
– Justme
Commented Oct 20, 2023 at 14:44
@Justme "Blindly trusting" is a bit harsh when there are real-world results that seem to contradict your statements. Of course, you are correct about the technical limitations of SATA 3.0 (ie, SATA 6 gbps), but that doesn't mean Rostol didn't have valid results with other unexplained parameters. Explanations could include using a different protocol than SATA and RAID configurations.
– Zediiiii
Commented Nov 7, 2023 at 15:34
1

@justme. Those are definitely possible explanations, probably even the most likely explanations. I agree with you, but I also wanted to point out that there are multiple possible explanations, and not all of them are that "human was falling into the trap of blatantly inflating the limits of SATA 3 theoretical speeds." Your tone comes off aggressive and harsh. To a reseller or manufacturer rep selling storage, that's more warranted. To a human trying to learn, it's rude and unnecessary. You obviously know your stuff. Respectfully, more people will listen to you if you use a friendlier tone.
– Zediiiii
Commented Nov 8, 2023 at 16:49

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