Speed Gets Very Slow When Copying Files In My SSD (850 evo)

valadinio

Prominent
Apr 12, 2017
2
0
520
Hello, I have a problem 3 days now..
When i try to move a file/folder in my Samsung SSD
850 EVO 500GB while for the first 6-7 gigs goes normal with speed from 200 to 450 mb/s after that it drops to even 0 and stays there for a long period and flashes back to 50-60 mb/s for a sec or two and then again to 0.
It can take up to 30-45 mins to move a 25 gb folder/file.

SSD 850 EVO 500gb i have it as a second one. my main is SM951 M.2 256gb.

I also did a format to my m.2 and still the same i have changed sata ports sata cables even installed OS to my 850 EVO and still the same.

When i move folders in my SM951 everything works fine with fast transferring. So the problem is only with the EVO.

When benchmarking i get good results like 1200 score at samsung magician but i suppose it doesnt matter cause it uses like 1gb to do the test.

The thing is that when i took my ssd to a friends house it was working correctly and could move a 25gigs file in 3-4 minutes.

I have installed all the drives for my motherboard.

SPECS:
Cpu: 5820k
Mobo: MSI x99s GAming 7
RAM : 16gb kingston predator
SSD 1 : Samsung SM951 256gb
SSD 2 : Samsung 850 EVO 500gb
 
Solution
ok i found the solution and OMG!! i took me 2 days....
So the think was the power.. i have a white sleeved extension sata power that connects to a molex to power up the ssd from the psu, but in the molex cable i also had conected this thing:http:// that has a 2 way molex.
So the power was going from psu molex cable>to led strip molex>and then to the sata sleeved power extension cable to the SSD.
And when i touched the led strip power plate it was extremely hot and then is when i thought that something might be wrong with the power, so i unplugged it connected the sleeved extension directly to the molex cable from the psu and voila!!

Can't believe that was the fault...

valadinio

Prominent
Apr 12, 2017
2
0
520
ok i found the solution and OMG!! i took me 2 days....
So the think was the power.. i have a white sleeved extension sata power that connects to a molex to power up the ssd from the psu, but in the molex cable i also had conected this thing:http:// that has a 2 way molex.
So the power was going from psu molex cable>to led strip molex>and then to the sata sleeved power extension cable to the SSD.
And when i touched the led strip power plate it was extremely hot and then is when i thought that something might be wrong with the power, so i unplugged it connected the sleeved extension directly to the molex cable from the psu and voila!!

Can't believe that was the fault...
 
Solution