Since when best products are bestsellers?...
Since when have they not been not been? Generally speaking, the better brands outsell the poorer ones.
Better brand does not necessarily mean better quality or lower price. Usually better brand = poorer product for higher price.
You aren't paying attention. The slowdown problems the early Samsung EVOs were unique to the Samsung 840 EVOs, not all TLC drives. The major differences between TLC NAND and MLC NAND are TLC NAND will be an unnoticeable real world speed and they a shorter write life (which, on the better TLC SSDs, is still longer than most people will ever use the SSD). The slowdown issue did not occur with the later 840 EVOs because the later firmware fixed it (and Samsung also issued a firmware update that fixed the most of the earlier EVOs). But don't take my word for it. Read this article that was linked earlier. https://www.pugetsystems.com/labs/articles/Samsung-SATA-SSD-s-Amazing-Reliability-772/
Slowdown was problem for Samsung 840 and 840 Evo, both used TLC NAND. Because problems is TLC NAND that does not keep electric charge well enough, that problem is hardware based and cannot be fixed with any firmware.
That Puget systems statistic is totally crap. As I already explained, all Samsung 840 and 840 Evo drives were good for warranty. Even when Samsung "fixed" those drives, they were defective for long time. Btw it took Samsung over three years to "fix" 840 non-Evo problems. Three years. AFAIK that was not good enough reason for warranty process.
However, NAND chips are not the only things that determine the quality of an SSD. The controllers also affect SSD quality. Some brands have better controllers than others. In fact, inferior controllers (such as the older Sandforce) are more likely to cause SSD failure than bad NAND. Btw, the Samsung 840 EVO slowdown issue was caused by controller firmware problems (which was later fixed), not the NAND.
Sandforce problems were fixed by firmware updates. And once again, 840 and 840 Evo problems are NAND based. Many users reported same problem even when using updated firmware. That's proof that problem is low quality NAND and not firmware. So firmware did not fix anything.
...850 Evo is TLC drive and once again, there are has not been problems with MLC NAND...
That simply is not accurate. There were problems with MLC NAND when they first came out. For that matter, the early SLC NANDs also had problems. Also, the 850 TLC drives have not been having any problems, especially due to being TLC.
Like what? Perhaps very early MLC drives for early adopters had MLC/SLC based problems but since SSD drives became cheap enough for home users (say around 100GB for $300 or so), problems where elsewhere. SLC drives were never really cheap enough for home users.
850 Evo have no problems, yet. Here, system that works every time:
- Samsung 8yy sucks because 8xx had problems
- 8xx had problems but 8yy is good
After some time:
- Samsung 8zz sucks because 8xx and 8yy had problems
- 8xx and 8yy had problems but 8xx is better and it has no problems
After some time:
- Samsung 8nn suck because 8xx, 8zz and 8yy had problems
- 8xx, 8yy and 8zz had problems but 8nn is better and it has no problems
So newest Samsung is always good because it's not like previous ones.
You are comparing apples to pears to kumquats. First, the Samsung 850 EVOs are NOT the same as the Samsung 840 EVOs! Second, the Muskins are not the same as the Samsungs. They use different controllers for starters. The Mushkin MLC has a shorter warranty period (three years with no mention of guaranteed write life) than the Samsung EVOs (five years or 150TBW; it's highly unlikely anyone will write 150TB to a 500GB SSD in five years). That alone all adds up to the Mushkins being the inferior drive, especially since Mushkin is withholding an estimate on how much write can expect. Just because a drive uses MLC NAND does not automatically mean it will be better quality than one that uses TLC NAND.
Controller is different but Mushkin has MLC NAND, that alone makes it much better buy.
Warranty? You just posted statistics that say SSD's are so reliable that warranty period makes no difference. 150 TBW is not that much, I could easily write that much in three years if not saving some writes to HDD. Mushkin does not specify TBW as NAND is so high quality that it lasts three years anyway. Also Samsung's warranty is non-existent if there are problems. Again, remember it took Samsung over three years to fix 840 non-evo problems https://www.pcper.com/reviews/Storage/Samsung-Magician-497-and-Samsung-840-DXT0AB0Q-Firmware-Tested-Read-Speed-Issues-Fina
So much about Samsung's "warranty".
So Mushkin is clearly superior, not inferior, against 850 Evo. It's much more durable, cheaper and has better MLC NAND. I have always avoided TLC NAND and 840/840 Evo fiasco proved I made right choice.
Edited by Drillingmachine, 20 May 2017 - 05:11 PM.