The MS-7613 Ver 1.1 (Iona-GL8E) is a Legacy BIOS Micro-ATX motherboard designed for HP OEM systems, featuring the Intel H57 chipset and LGA 1156 socket for first-generation Core processors. Supporting up to 16GB of DDR3 RAM and featuring PCIe expansion, the board is suited for basic upgrades, though its legacy BIOS limits compatibility with modern UEFI graphics cards and proprietary front panel headers. Access the official documentation for this board at The Retro Web. Motherboard Specifications, MS-7613 (Iona-GL8E)
Solution from manual (p. 29): By default, JAUD1 is set to AC’97 mode. For HD Audio cases, move jumpers JB1 and JB2 from pins 1-2 to pins 2-3. Also, enable “Front Panel Jack Detection” in Realtek HD Audio Manager. ms-7613 ver 1.1 motherboard manual
Q: Why does my CPU run at lower multiplier?
Manual answer (p. 35): SpeedStep (EIST) reduces multiplier when idle. Disable in BIOS > Cell Menu > Intel EIST if benchmarking. The MS-7613 Ver 1