Hi all,
Intel® Core™ desktop processors support up to the
published Intel® Turbo Boost Technology frequencies with default
settings/cooling at nominal room temperature (72°F/22°C) using non-AVX
workloads. If the default settings are modified (e.g. multipliers,
voltages, power/current limits, etc.), the Intel Reference Heat sink received
with the processor may not handle the extra heat and cause the Thermal Control
Circuit (TCC) to become active – it will attempt to limit the processor
temperature by lowering voltage and frequency until it drops below maximum safe
temperature; furthermore, AVX instructions (such as those used by Prime95
version 26.6 or later) require higher processor voltage and will generate more
heat/consume more power than the default limits will allow.
If frequency limitation occurs, please use the Intel® Extreme Tuning
Utility (XTU) to monitor the temperatures being generated and/or the power
being consumed by the processor (click the little wrench icon near the lower-right
corner of the window to enable all monitors). If the frequency isn’t
reaching its specified values due to power and/or current limitations, try
adjusting “Turbo Boost (Short) Power Max” and/or “Processor Current Limit”
higher. If the cooling solution isn’t capable of dissipating the applicable
heat, ensure all “Voltage” controls are set to “Default,” and “Voltage Offset”
controls are set to 0.