After updating to A13, some users noticed their CPU would not reach its advertised boost clock. For example, an Intel i7-9700K that previously hit 4.9 GHz might cap at 4.6 GHz. This was an intentional (if unpopular) safety measure by Intel to prevent voltage spikes that could damage the chip. Power users, especially gamers, downgraded back to A11 or A12 to regain performance.
Revision A13 is one such firmware package. It serves as a cumulative update, meaning it contains all the fixes from previous versions (A01 through A12) while introducing new specific enhancements. bios revision a13
If you have already updated to A13 and are experiencing performance loss or fan noise, you might want to revert to an earlier revision. After updating to A13, some users noticed their
for many of its legacy and modern systems, and more recently in firmware for handheld emulation devices Power users, especially gamers, downgraded back to A11