I recently installed an SSD (Samsung 850 PRO 256G) (I placed the HDD into the DVD slot) into my laptop and after I reinstalled Windows the system process (ntoskrnl) is contantly using my cpu. The first logical processor is always almost at 100% usage and games with poor multicore support (Team Fortress 2) lose a lot of frames (I get a 30-40 fps boost the I change the affinity to disable the first core).
Specs:
OS Name Microsoft Windows 10 Pro
Version 10.0.14393 Build 14393
System Manufacturer ASUSTeK COMPUTER INC.
System Model N550JK
System Type x64-based PC
Processor Intel(R) Core(TM) i7-4710HQ CPU @ 2.50GHz, 2501 Mhz, 4 Core(s), 8 Logical Processor(s)
BIOS Version/Date American Megatrends Inc. N550JK.207, 2014-08-11
Windows Directory C:\Windows
System Directory C:\Windows\system32
Boot Device \Device\HarddiskVolume2
Installed Physical Memory (RAM) 16,0 GB
Total Physical Memory 15,9 GB
Available Physical Memory 12,9 GB
Total Virtual Memory 18,8 GB
Available Virtual Memory 15,8 GB
Page File Space 2,88 GB
Page File C:\pagefile.sys
GPU Nvidia GTX 850M 4GB