EDIT UPDATE: ======= I found the cause of the issue.=========== The Chipset drivers from ASUS and AMD. In device manager, search for: IDE ATA/ATPI controllers Expand that you will find: " AMD SATA controller " Right click - properties - driver... Chose "Rollback Driver" This should uninstall the AMD Chipset driver and install microsoft driver. *If this does not roll back, you MUST uninstall ALL AMD drivers (It might be part of ATI or catalist which include all kinds of package drivers). You have to find the AMD file in " Program Files " " Program Data " " Program Files 64 " .. you must have uninstalled all AMD software and manually find the AMD folder to remove/delete it.. You have to show all hidden folders in the folder options in controll panel. These files will linger and conflict to re install . I DID NOT unstall the drivers in Windows DRIVERS folder. BUT they could re install. IF they do you will probably have to force that windows driver to install or redo your OS. (I don't know these tricks) When doing this, for some reason (which shouldn't have happened, I must have deleted a windows driver) this crashed my system to the point Windows would not start up, even running a windows repair. I had to buy another SSD to install fresh windows, just to re connect my (crashed) Intel SSD back to pull files I did not want to lose on a windows re install. THEN I was able to fresh install windows on the Intel SSD, put all my files back from the PNY SSD.. then disconnect the PNY and add the Samsung 860 Evo and continue testing. So, fresh windows install on Intel SSD not connected to the internet.. no drivers installed. Connecting the Samsung and trying to get it to work. (Which it did!) This is when I discovered the only driver or software I installed caused the Samsung issue, Chipset. It was not anything else but the chipset drivers. If you use a AMD package or ATI package it will include a Chipset driver . If under ' IDE ATA/ATPI controllers ' you see " AMD SATA controller "... your doomed. Roll back the driver and windows should install windows drivers.. problem solved. This will then allow the drive to work faster with Samsung Magician and CrystalBenchMark. This should then work with fresh windows install. I have spoken to Samsung 1800-SAMSUNG and chose 'Memory'.. and they confirmed that the benchmark scores using windows drivers are lacking by 50 - 100 MB/s.. but the sequential read and write is " about right.. could be better ". So using windows drivers makes the drive not hang for 27 minutes to do the Samsung Magician benchmark test.. now it takes about 4 minutes. BUT... not exactly what the drive potential could be. It is my conclusion to not recommend the drive price per performance when it is slightly nerfed by windows drivers .. when the chipset drivers must be uninstalled to USE the Samsung 860 EVO SSD and the 860 PRO ssd (I have tried both) on ANY AMD 990FX/SB950 chipset boards. I ended up refunding the Samsung 860 EVO 250GB 2.5" Internal Solid State Drive and bought the Samsung 860 PRO 250GB 2.5" Internal Solid State Drive. I am going to refund the 860 pro. There is not a reason to pay for the high proformance drive when you are nerfed by the windows drivers on this board. ASUS/ASRock/Gigibite windows 7, windows 10.. all what I have read.. Since 2013 with the 840's to 2018 with the 860's. WHY has this compatability issue not been corrected? There is no warning on the box, in the stores.. on the website. There is no 'fix' for the issue. I will NEVER EVER buy a Samsung Solid State Drive again. I have an Intel SATA II I recently bought a PNY CS9000 SATA III (cheap drive) to test with. (refunded) Both drives worked perfectly fine on the AMD 990FX/SB950 chipset board with the AMD // ASUS chipset drivers. ------------ END OF EDIT ------------- I have an ASUS M5A99FX PRO R2.0 board. Chipset:990FX. I tried Samsung 860 EVO 250GB MLC V-NAND SATA III 6Gb/s 2.5" Internal Solid State Drive Mfr Part #: MZ-76E250B/AM UPC:887276232317 And I tried, Samsung 860 PRO 256GB MLC V-NAND SATA III 6Gb/s 2.5" Internal Solid State Drive Mfr Part #: MZ-76P256BW UPC: 887276247427 I am having the exact same issues as all of you have said. 27 minutes to do 'Performance Benchmark' in Samsung Magician. Sequential : Read 47 Write 492 Random IOPS: Read 34,423 Write 35,400. CrystalDiskMark 6.0.1 (64)/(32) both hangs/ is very slow to do the test. After @ 30 minutes: CrystalDiskMark 6.0.1 x64 results: -------READ / ------Write Seq Q32T1 414 / 502.0 4KiB Q8T8 34.75 / 68.74 4KiB Q32T1 117.0 / 196.4 4KiB Q1T1 45.67 / 99.68 The scroes above were in the 'grey' ports of the SATA on the Motherboard. 1-4 Another problem is, if you go to samsung.com/us There is NO support for this drive. Samsung Magician - System Compatability : VID 1002 Under the current system environment, some functions in Magician CANNOT be run. If multiple iterations of Read and Write are performed, RAPID mode may become inactive due to system internal errors on some of the AMD / AsMedia Controller or Driver. By the way, Samsung memory department "confirmed" the 860 Evo is a 3-bit.. which is TLC. the 860 Pro is 2-bit which is MLC. Therefore, the Evo is not a MLC, it IS a TLC. The Pro is MLC.
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