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by zeusk 1816 days ago
MBR/GPT and BIOS/UEFI aren't anywhere in-depth as clock multiplier, bus master/slave or IRQ/DMA/IO.

MBR/GPT and BIOS/UEFI along with SecureBoot are neatly explained in the UEFI and motherboard manuals. Also custom parts imply you're running XMP memory and need to enter UEFI to enable the advertised clocks anyway (Hello! JEDEC).