Only four cores are visible despite the processor displaying six.
Only four cores are visible despite the processor displaying six.
I upgraded my CPU to a 6-core i5-8400, matching the socket of my old Pentium Gold G5400. I borrowed one from another PC at home and swapped everything without issues. However, system info showed only 4 cores. After checking the BIOS, it confirmed a 6-core chip, but it still reported 4. I tried removing the CMOS to test for a BIOS issue and completely reset the BIOS, but it remained at 4 cores. Someone, could you help me resolve this without relying on msconfig?
It might be one of three possibilities. Start by examining Msconfig and the boot settings, confirming there’s no artificial limitation. Perform a full BIOS update and verify it isn’t being artificially restricted. A complete BIOS reset may resolve the issue. Clearing the CMOS doesn’t always fix this problem. Your Windows could require a reset or reinstall. Occasionally, something within the BIOS or Windows causes four cores to be active while two are disabled—this should ideally be a six-core, six-thread CPU.
Alright, thanks. It’s good to have this info for later. For now, I’m going to revert it since I really need a PC anyway. Thanks a lot!