ASROCK B450M/ac R2.0 User Manual

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4.4.7 AMD CBS
Zen Common Options
RedirectForReturnDis
From a workaround for GCC/C000005 issue for XV Core on CZ A0, setting MSRC001_1029
Decode Conguration (DE_CFG) bit 14 [DecfgNoRdrctForReturns] to 1.
L2 TLB Associativity
0 - L2 TLB ways [11:8] are fully associative. 1 - =L2 TLB ways [11:8] are 4K-only.
Platform rst Error Handling
Enable/disable PFEH, cloak individual banks, and mask deferred error interrupts from each
bank.
Core Performance Boost
Disable CPB.
Enable IBS
Enables IBS through MSRC001_1005[42] and disables SpecLockMap through
MSRC001_1020[54].
Global C-state Control
Controls IO based C-state generation and DF C-states.

ASROCK B450M/ac R2.0 Specifications

General

Form Factor	Micro ATX
Chipset	AMD B450
Socket	AM4
Max Memory	64 GB
Memory Speed	DDR4 3200+(OC)
PCIe Slots	1 x PCIe 3.0 x16, 1 x PCIe 2.0 x1
Storage Interface	4 x SATA3
Audio	Realtek ALC887
Networking	Realtek Gigabit LAN
Bluetooth	Bluetooth 4.2
Video Outputs	1 x HDMI
Memory Slots	4 x DIMM