Larkbox X 2023 iGPU 400Mhz instead of 750Mhz (solved), RAM 4000Mhz instead of 4800Mhz?

MiniPC Larkbox X
85

Serial: SLarBXGZ1H240501208 bios: DNB19C v0.03 x64
Can I use this patch?
Can I enable virtualization VT-X?