I am not certain why there's a substantial difference for idling CPU frequency between W8.1 and W7. My PC runs both OS in dual-boot mode, controlled by EUFI "F12" key. Other than both OS having it's own SSD drive, the hardware is identical.
Both OS used HWMonitor, v1.27.0, initially just to see the CPU temperature that lead me to the CPU frequency differences.
The HWMonitor for Windows 7 shows this:
The same for Windows 8.1 shows this:
And no, there isn't anything pegging the CPU, W8.1 task manager shows low CPU utilization around at the time the HWMonitor image had been captured:
The CPU speed/frequency is actually confirmed by the task manager. Is speedstep broken in Windows 8.1, or HWMonitor is not accurate?
Both OS used HWMonitor, v1.27.0, initially just to see the CPU temperature that lead me to the CPU frequency differences.
The HWMonitor for Windows 7 shows this:
The same for Windows 8.1 shows this:
And no, there isn't anything pegging the CPU, W8.1 task manager shows low CPU utilization around at the time the HWMonitor image had been captured:
The CPU speed/frequency is actually confirmed by the task manager. Is speedstep broken in Windows 8.1, or HWMonitor is not accurate?
My Computer
System One
-
- OS
- Win 8.1
- Computer type
- PC/Desktop
- System Manufacturer/Model
- Dell Latitude
- CPU
- Intel i5-3350P (3.1 GHz)
- Motherboard
- Gigabyte
- Memory
- 16 GBs
- Graphics Card(s)
- AMD Radeon HD7850
- Sound Card
- Built-in to MB
- Monitor(s) Displays
- 2 x 24" Dell
- Screen Resolution
- 3,840 x1,200
- Hard Drives
- 128 GBs, OCZ Vertex, SATA III SSD
256 GBs Intel SATA III SSD
3 x Seagate 1 TBs HDD
- PSU
- Antec 750W
- Case
- Antec P185
- Internet Speed
- 50 Gb/s
- Browser
- IE11, Firefox22.0
- Antivirus
- Vipre
- Other Info
- Works, most of the times unless Microsoft patches decide otherwise...