Samsung 860 Evo 500GB slow write and read speeds

[Ricklamperouge]

Hello, I bought a Samsung Evo 860 Evo and I'm getting really low speeds. I have around 250MB/s read speeds and 80MB/s write speeds. I have AHCI enabled on Bios, my sata cables are 6.0 Gb/s, I changed the registry following a few tutorials and nothing. My motherboard has 6 Sata 3 slots. 

 

[homeap5]

1. Check your SATA cable anyway, even if you think it's good.

2. Check your drivers (motherboard).

 

[VinsinityKT]

I'm assuming nothing is going on in the background correct? Downloading files, updates.

[Ricklamperouge]

4 hours ago, homeap5 said:

1. Check your SATA cable anyway, even if you think it's good.

2. Check your drivers (motherboard).

 

I used different sata cables and is still the same

I didn't found any drivers for sata in my motherboard website, just LAN, audio and bios

[Ricklamperouge]

4 hours ago, VinsinityKT said:

I'm assuming nothing is going on in the background correct? Downloading files, updates.

Nope, I even did a fresh install of windows

[AyesC]

This may not be the case but there could be a background task using up a lot of the drive time. Try restarting in safe mode and check the speeds again. If the problem persists, then it may not be the case. If the drive runs fine in safe mode, check what programs are using the drive a lot in task manager in windows.

[SSD Sean]

What’s your system?

Maybe install or remove the SATA driver? Try clearing CMOS?  

Update the BIOS/UEFI?

 

Weird it’s not negotiating the SATA 6Gb/s link correctly. 

 

For write speed, run Windows Optimize on the drive and let it sit for a little and restart and then retest it.

[AyesC]

1 minute ago, SSD Sean said:

What’s your system?

Maybe install or remove the SATA driver? Try clearing CMOS?  

Update the BIOS/UEFI?

 

Weird it’s not negotiating the SATA 6Gb/s link correctly. 

Possible the BIOS is not allowing full speeds... Also how have you formatted the drive? NTFS? FAT32? also what is the boot sector type? MBR? GPT?

[Ricklamperouge]

4 hours ago, Kiddo V9999 said:

This may not be the case but there could be a background task using up a lot of the drive time. Try restarting in safe mode and check the speeds again. If the problem persists, then it may not be the case. If the drive runs fine in safe mode, check what programs are using the drive a lot in task manager in windows.

I ran windows in safe mode and tried and the speeds were the same, and there is nothing using the drive in the task manager.

 

4 hours ago, SSD Sean said:

What’s your system?

Maybe install or remove the SATA driver? Try clearing CMOS?  

Update the BIOS/UEFI?

 

Weird it’s not negotiating the SATA 6Gb/s link correctly. 

 

For write speed, run Windows Optimize on the drive and let it sit for a little and restart and then retest it.

I will try that.

[AyesC]

The only other cause I can think of is a defective drive or a faulty drive firmware

[homeap5]

59 minutes ago, Ricklamperouge said:

Nope, I even did a fresh install of windows

That's even worse - you removed all entries in event viewer that can help you. All tuning you made is gone too. And Windows reinstalling updates again. Also if there is drive problem, another os installation do not help but may make it worse. Connect your drive to another computer if you can and test speed while your SSD is second drive.

[Ricklamperouge]

Ok it got fixed, I cleared the CMOS and updated the bios and now is reading and writing at 497/453, thanks a lot for your suggestions

[crabby12]

1. Take Backup of Important Datas and Plug-in Charger
2. Install Windows OS
3. After Completion of Windows OS, Boot Ubuntu Live Media and Install Ubuntu OS Alongside With Windows OS.
4. After Completion of OS Installation,Restart The Machine and Choose Which One Want To Boot from Grub Menu!
5. In Windows OS, You Need To Install Some Driver Softwares Like Audio or Video Drivers for Proper Function. But In Ubuntu Drivers are Taken By Default and Works Well.

[Tristerin]

7 hours ago, SSD Sean said:

What’s your system?

Maybe install or remove the SATA driver? Try clearing CMOS?  

Update the BIOS/UEFI?

 

Weird it’s not negotiating the SATA 6Gb/s link correctly. 

 

For write speed, run Windows Optimize on the drive and let it sit for a little and restart and then retest it.

What does clearing CMOS do?  Not disagreeing at all, Im a noob, but after I read this thread I checked and all my ish is updated (the first PC in my sig) but my write speeds are slow?  And I checked on two diff BIOS (current) and a very old one and results were same either way (close enough to same):

 

 

[SSD Sean]

31 minutes ago, Tristerin said:

What does clearing CMOS do?  Not disagreeing at all, Im a noob, but after I read this thread I checked and all my ish is updated (the first PC in my sig) but my write speeds are slow?  And I checked on two diff BIOS (current) and a very old one and results were same either way (close enough to same):

 

 

He had another issue besides write speed. His SATA link was negotiating at SATA 2, not SATA 3. So clearing the CMOS can reset the boards SATA controller's links. So that is what that was for. 

 

To help improve slow write speed, you run TRIM (Windows Optimize) on the drive and let it recover. 

[AyesC]

On 12/4/2018 at 1:42 PM, Ricklamperouge said:

Ok it got fixed, I cleared the CMOS and updated the bios and now is reading and writing at 497/453, thanks a lot for your suggestions

Good to know you fixed it. Hopefully, I was able to help in some way!