PC # 1: ASRock Z97M-ITX/AC, BIOS v1.80 (), 2x4GB DDR3-1600 (Kingston HyperX Blue), no add-on VGA If you tested the RAM modules using Memtest86 or any other memory testing tool I would recommend testing with different sticks of RAM.Īfter many hours of testing, here are the results. You can also test the processor in a compatible motherboard to see if the problem persists.
#How to enable turbo boost on an i5 4590 download
In regards to the issue with Prime95 and the Skylake (6th gen) processors, it is not related to any other families of processors.įor troubleshooting purposes, you can test the system in a Windows environment to run the Intel® Processor Diagnostic Tool as the Linux* version is available for Fedora only and won't necessarily run in Debian, you can download the tool here. You can disable the Intel® Turbo Boost Technology from the BIOS (if the option is available). You can click here to check the maximum frequencies while the Intel® Turbo Boost Technology is enabled, please expand 4th Generation Intel® Core™ i5 Desktop Processors and look for the processor you have. In regards to your question "What is the maximum core frequency for this CPU when all cores are utilized?" Thank you for contacting Intel Communities. I would appreciate any comments and ideas.
#How to enable turbo boost on an i5 4590 update
My mainboard is an ASRock Z97M-itx/ac with the latest BIOS and I even ensured that the most recent microcode update is loaded by the OS (Debian Linux with kernel 4.9.13). Could it be a similar issue with 4th Gen i5 as well? I heard that 6th generation of Core CPUs suffered from a bug which caused freeze during high load (Prime95) when using AVX instructions. What is the maximum core frequency for this CPU when all cores are utilized? Is it possible that I need to manually limit the maximum frequency to stabilize my system? Could it be a BIOS or OS issue, or I just have a faulty CPU? I observed, that when lock up happens, all 4 cores are running on ~2.6GHz which seems to be a bit high. I ruled out the obvious root causes (overheating, faulty PSU, faulty RAM modules, outdated BIOS) and started to focusing on Turbo Boost.Īccording to the specification of this processor, base frequency is 2.00GHz which can go up-to 3.00GHz (for a single core) with Turbo Boost. No kernel panic, error message or reboot, just locks up. My system looks stable in normal conditions, but after a few minutes of H.264 video encoding, it freezes. Product Name: Core i5 Quad-core i5-4590 3.I recently upgraded my home server with a Core i5-4590T processor and started to experience lock ups during heavy CPU load.