Poor SSD performance in Windows 10

I let these benchmarks speak for themselves, I've been using Windows 7 because of this as I haven't had time to troubleshoot but might as well start a thread to see if any1 got any ideas.

It concerns both a 840 Pro (Windows 7 OS drive) and 850 Evo (Windows 10 OS drive) Samsung SSD

Windows 7:



Windows 10:



Using latest intel chipset drivers, AHCI I've checked and have ran SSDTweaker on both operating systems.

The excessive CPU utilization tells me it's probably a driver issue. What motherboard and what storage driver version is used?

Also, I have no idea what "SSDTweaker" is or what type of negative impact/overhead it may have. Other than some folks disabling hibernation and adjusting page file size there really are no SSD tweaks necessary for Windows 7 or 10.

I suspect SSD Tweaker jacked something up in Windows 10. It makes a ton of adjusts that most people wouldn't ever notice or need.

Windows 10 and HDTUNE give me VERY WEIRD results... I thought it was SAS drives at first but even the SATA drives don't bench in HDTUNE like every other one... YMMV

I've got an ASRock Extreme6 Z87 motherboard. What storage driver were you referring to @bigdogchris? I've installed latest intel chipset drivers (first the ones listed on ASRock homepage and later from Intel directly) and Intel Rapid storage driver. There's no other storage related drivers for Win 10 for this motherboard. There is ASMedia 106x storage controllers listed in device manager for Windows 7 (beside the Intel8 Series/C220 Chipset SATA AHCI Controller) but not for 10, only the Intel one is listed and can't find any ASmedia SATA3 driver download for Windows 10 and installing the Windows 7 one didn't add any device to device manager.

Tested reverting to default windows settings with SSD Tweaker but didn't make it any better.

Maybe it's just HD Tune...

EDIT: Could be the SATA ports, I guess there's a slight chance I've connected the 850 EVO to the ASmedia controller SATA ports as opposed to Intel which I suppose are the better ones on this mobo. The Windows 7 install on the Samsung 840 Pro is likely connected through the better controller on the mobo. Would this matter when benchmarking though, which SATA port the SSD is connected to for the SSD that hosts the Windows OS on it.

EDIT2: let me rephrase that last sentence;

Does it matter if Windows 10 would be installed on a SATA port that is connected to ASMedia storage controller? Could it be the Windows 7 is using Intel controller and my Windows 10 install ASmedia and therefore I'm seeing worse performance in Win10 even if both SSDs benches fine in Windows 7?

double check AS SSD and crystal disk mark and another benchmark to make sure the issue is system wide in benchmarks. It could just be HD Tune or it could be something in the background of 10 causing this. Also run the tests are various times and ensure system is at true idle....watch task manager and make sure win 10 isn't updating or scanning or wahtever

I'd look at Task Manager or even Computer Management/System Tools/Performance and capture all the CPU usage data during your test to see who is using the CPU. That high CPU is almost certainly related...

Responding to a couple posts up...

Yes it matters which controller you are using. Use the Intel controller for best performance. However unless you started moving cables, your drives should be on the same controller?

Ocellaris said:

Responding to a couple posts up...

Yes it matters which controller you are using. Use the Intel controller for best performance. However unless you started moving cables, your drives should be on the same controller?

Click to expand...

that too. Makee sure your on the intel and not the third party controller for primary drives.

I have the same problem.

All SSDs are running at half speed or worst in all benchmarks.

BX100
Samsung 850 EVO
Intel 520
HP SD v300a
PNY XLR8
Intel S3500
Seagate SSD 600

Tried swapping cables, moving to other SATA controllers. About to pop a SAS/LSI HBA and run my drives off that, and drivers.

Gene-V Z77 board.

I've now replaced 3 of my older HDDs (all with uptimes of 6.3 ~ 6.85 years or 60,000 hrs or so for the oldest one so was about time to retire those ) with a newer bigger one and at the same time I checked that the SSDs are connected to the recommended intel based controller port 0 & 1 and this overall makes it slightly more responsive overall (or could just be due the fact I don't have to connect any drives now to the spare sata controller) but it didn't still fix the Windows 10 performance, the benchmark still shows a bit of a rollercoaster reads and I tested with this other benchmark someone here recommended which also had a bit of a wavy graph. So for now sticking with Windows 7, Windows 7 feels now extremely fast as well, it's a bit as if the comp has been reformatted even if Win 7 benchmarks showed that performance is perfect before too, now the responsiveness is really amazing after reorganization of sata cables. Will upgrade either to Zen or next Intel release next year anyway so I guess it must be just poor Intel Z87 chipset compability or lacking support/bad configured hardware setup from ASRock for this specific issues regarding slower SSD performance in Win 10.

I had 6 HDDs (+2 SSDs) before if that matters, now 4 HDDs.

I have HDTune Pro and several other HDD/SSD benchmark applications installed. HD Tune Pro will give one set of results and all the other apps will give different to HDTune but similar results between themselves.

HDTune is based on old software, try other benchmark apps to verify if you get consistent results and be sure to keep it within reasonable parameters. Don't benchmark with complete drive writes or with dozens of GB of data written, that's just a good way to get bad results because a drive can go into panic mode when it can't keep up with the garbage collection.

Don't use HDTune. It doesn't work properly in Windows 10. Usw AS-SSD or AnvilPro.