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10-25-2016 11:45 AM
And yes. I applied the TIM correctly. 😉 The fans just not moving quickly enough. Cools nicely when i crank the fan manually. Thanks for your input!! 🙂
16GB 1333 2x8
RAID0 OCZ SSDs
Windows 10 pro
10-25-2016 08:20 PM - edited 10-25-2016 08:25 PM
As is the case with the Z400 the Z420 workstations run the less expensive but hot processors when compared to the Z600/Z620. Your processor is a 130W max TDP, so you presumably already have what would be considered a "Performance" heatsink/fan.
I use HWMonitor from CPUID.com, free version, to view temps and fan RPMs.... how well that works for you will be determined by the chips on the motherboard. There is a setting in BIOS that lets you raise fan speeds in steps, but that may not raise the heatsink fan speed for the processor. Thus, maybe you want to add a front cooling fan to add in more airflow through the case. There are official and "ghetto mod" ways to do that, but there is a motherboard header, 4 pin, for that fan at bottom front corner of the motherboard. I like to use HP parts where possible, and you may be able to find the correct black plastic fan holder and HP-tuned PWM fan.
Sometimes the heatsink "blades" get partially obstructed by lint hidden behind the fan, hard to see, but taking off the fan and cleaning that out can make a big difference, in my experience. It is amazing how much fur can build up if one has pets and you keep the workstation on the floor. Raise it up on blocks at least 8" to help with that, or up on the desk.
10-26-2016 07:39 AM
10-27-2016 11:40 AM
Additionally, dose anyone know the safe maximum operating temperature for this CPU?
Run a program like CoreTemp, which shows the maximum CPU junction temperature Tj max. This value can be different for each type of CPU. Itried CPUID HWMonitor, and it shows CPU core temperatures, but does not give the Tj max value.
The E5 CPUs are designed to run at high temperatures for maximum performance. To put is briefly, the limit of performance is determined by the CPU die maximum temperature Tj max. The higher the frequency, and the more the cores are used, the higher the temperatures. I have run many systems, for months at a time, at 100% CPU usage, and the CPU core temps were up to 10 deg. C. below Tj max, using the HP CPU heatsinks. (Note: if one removes the CPU heatsink, always use fresh thermal paste, otherwise CPU temps will be hotter than they should be)
If the CPU has a Tj max of 91C, for example, it is OK to run the the CPU at 80C for extended periods. Intel throttles CPU speeds if they get too hot. Increasing the CPU fan speed manually can reduce temperatures, but the fans will be noisier. Some users like to have quieter systems, so it is normal to see "high" cpu temps, but a "high" CPU temp number by itself does not mean much without knowing the Tj max. (Note: Tj max is different than Tcase)
My opinions are my own, and do not express those of HP.
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