Samsung 850 Pro very slow (tried a lot of solutions) [Solved]

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Sean1er

Commendable
Dec 8, 2016
2
0
1,520
Solution: I plugged the sata into my original intel sata 6gb ports that i was having problems with. Then I switched the intel sata controller to microsoft's controller by going in Device Manager, IDE ATA/ATAPI controllers, changed the "Intel(R) C600 Series Chipset SATA AHCI Controller" to "Standard SATA AHCI Controller". It works normal now, the only thing is i noticed its a little slower in the benchmarks.

Recently i bought the samsung 850 pro 256gb to use as my OS boot drive and use the 840 pro 256gb as storage, or raid 0, not sure yet. The main issue im having is that i noticed the 850 becomes really slow when i install big files (I.e games from steam/allocating space), computer gets really slow. when i did benchmarks (samsung magician, AS benchmark), it took forever, sometimes generating completely random results. BUT when i did the benchmarks for the 840 pro, it finished quick. i thought it was defective, so amazon gave me another and it does the same exact thing. i currently have both 850 pro using the replacement as boot drive and the 840 pro. I tried following the ssd optimizing guide, no luck, also have ahci and sata-6gb connections. tried switching sata wires, connected only to intel sata ports. I dont know what else to do.

Rig:

Windows 10 64bit
motherboard: asus x79 deluxe
intel I7 4930k
16 gb, 2400 mhz g.skill
sli 780ti

http://i88.photobucket.com/albums/k176/Shaban_02/Screenshot%201.png

for the AS benchmark, i couldn't do it since it was taking forever on both 850s on the "4k 64bit" part of the test. having 250mb read and write on the 850's

for the 840:

S SSD Benchmark 1.9.5986.35387
------------------------------
Name: Samsung SSD 840 PRO Series
Firmware: DXM06B0Q
Controller: iaStorA
Offset: 132096 K - OK
Size: 238.47 GB
Date: 12/8/2016 3:43:28 AM
------------------------------
Sequential:
------------------------------
Read: 526.07 MB/s
Write: 488.78 MB/s
------------------------------
4K:
------------------------------
Read: 32.70 MB/s
Write: 81.32 MB/s
------------------------------
4K-64Threads:
------------------------------
Read: 216.48 MB/s
Write: 315.44 MB/s
------------------------------
Access Times:
------------------------------
Read: 0.049 ms
Write: 0.042 ms
------------------------------
Score:
------------------------------
Read: 302
Write: 446
Total: 913
------------------------------
 
Solution
S


Thanks Boogieman, all firmware, bios and drivers are up to date. So i forgot i had more 6gb ports, which i thought were 3gb ports, i put the 850 pro on the marvell 6gb ports and now i was able to finish the AS SSD benchmark test with results better than the 840 pro. Also used a ssd diagnosic tool...
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Boogieman_WD

Boogieman_WD

Judicious
Jul 31, 2014
6,050
2
35,960
Hey there, Sean1er.

Try updating your mobo's BIOS/UEFI. Other than that, you should download a drive diagnostic tool and test the SSD for erros, just to make sure that it's working properly.
Try the SSD with a different computer and benchmark it again, to see if you'll get the same results as before.
Check for available firmware updates for that SSD model as well.

Hope that helps. Please let me know how everything goes.
Boogieman_WD
 
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Sean1er

Commendable
Dec 8, 2016
2
0
1,520


Thanks Boogieman, all firmware, bios and drivers are up to date. So i forgot i had more 6gb ports, which i thought were 3gb ports, i put the 850 pro on the marvell 6gb ports and now i was able to finish the AS SSD benchmark test with results better than the 840 pro. Also used a ssd diagnosic tool (SSD life pro), in excellent condition and apparenty both the 840 and 850 will last me until 2025, kind of sceptical of that since i had the 840 for 2.5 years with over 25 terabytes writen on it. Im still confused on why the 850 pro isn't working well with the intel 6gb port i have on the mobo, but my 840 has no problems with it? I had this problem even when i did a fresh install of windows.

Edit:

Great! now switching to marvell sata ports disabled my SLI mode. I fixed this problem before by disabling the realtek lan device through bios. I really hope disabling the Marvell controller isn't the only possible solution. Don't have any other 6gb ports. Also, since i have a gigantic PNY GPU hogging up 2 1/2 pci slots, can't move them around. One problem after another...

Edit again:
So the only best solution that i found is that i plugged the sata into my original intel sata 6gb ports that i was having problems with. Then I switched the intel sata controller to microsoft's controller by going in Device Manager, IDE ATA/ATAPI controllers, changed the "Intel(R) C600 Series Chipset SATA AHCI Controller" to "Standard SATA AHCI Controller". It works normal now, the only thing is i noticed its a little slower in the benchmarks.
 
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