Amd K15 Imc Chipset Drivers

To understand the driver, you must understand the hardware. Between 2011 and 2015, AMD shifted from the K10 (Phenom/Athlon) architecture to the Bulldozer-based K15 architecture. Unlike Intel’s individual cores, K15 used "modules" (two integer cores sharing a floating-point unit). Processors under this umbrella include:

When users search for this, they usually need one of three things:

1. The AMD Chipset Drivers (Southbridge/Hub) This is the real download. For K15, the chipset (e.g., AMD 970, 990X, 990FX, A55, A88X) contains the Peripheral Bus (USB, SATA, PCIe lanes to the CPU). The installer is still available from AMD.

2. The "AMD Processor Power Management" Driver This is the closest thing to a "CPU/IMC driver" for K15. Without this, Windows 7/10/11 will not correctly manage the P-states (Core C6, Turbo Core). You may see all cores stuck at 1.4 GHz or running full speed all the time. amd k15 imc chipset drivers

3. The BIOS (UEFI) Update The real IMC driver lives in your motherboard's BIOS. For K15:

Symptom A – High DPC Latency / Audio dropouts
Cause: Missing amd_k15_imc.sys → memory accesses use non‑optimized PCI path.
Fix: Revert to chipset driver 19.10.16 or older.

Symptom B – Windows 10 upgrade from 7/8.1 results in bugcheck 0x00000124 (WHEA_UNCORRECTABLE_ERROR)
Cause: Incompatible IMC voltage scaling with newer OS power plans.
Fix: Boot into Safe Mode, remove AMD SMBus/Memory Controller devices, then install 19.10.16 chipset drivers. To understand the driver, you must understand the hardware

Symptom C – Only half of installed RAM is usable
Cause: IMC driver failed to initialize memory interleaving or node interleaving.
Fix: Ensure amd_mc.sys is running; check bcdedit /set removememory 0; reseat RAM.

In Device Manager, the K15 IMC appears under System Devices as:

Notable driver releases supporting K15 IMC: causing “Unknown Device” entries.

| AMD Chipset Version | IMC Driver File | Release Date | Key Fixes | |---------------------|----------------|--------------|------------| | 15.20.1065 | amd_k15_imc.sys | Jun 2016 | Added Win10 RS1 support | | 17.10.22 | amd_smbus.sys | Oct 2017 | Resolved BSOD 0x124 on FX‑9590 | | 19.10.16 | amd_mc.sys | Nov 2019 | Final K15 support; removed in 20.x.x |

Critical note: AMD dropped official K15 support in Chipset Drivers 20.x.x and later (2020+). Installing newer versions on K15 systems will not install the IMC driver, causing “Unknown Device” entries.