Based on the AMD B850 chipset, the ASUS PRIME B850M-F motherboard is designed to accommodate AMD Ryzen 7000/8000/9000 processors on socket AM5. It is ideal for assembling a gaming or multimedia configuration. More affordable than the X870 chipset, it supports DDR5, PCI-Express 5.0 graphics cards and PCIe 5.0 M.2 SSDs.
CPU
AMD Socket AM5 for AMD Ryzen™ 9000 & 8000 & 7000 Series Desktop Processors*
Supports up to AMD 120W CPU
* Refer to https://www.asus.com/support/download-center/ for CPU support list.
Chipset
AMD B850 Chipset
Memory
2 x DIMM slots, max. 128GB, DDR5
Supports up to
8200+MT/s(OC) with Ryzen™ 9000 Series Processors,
8400+MT/s(OC) with Ryzen™ 8000 Series Processors,
8000+MT/s(OC) with Ryzen™ 7000 Series Processors,
ECC and Non-ECC, Un-buffered DIMM*
Dual channel memory architecture
Supports AMD Extended Profiles for Overclocking (EXPO™)
ASUS Enhanced Memory Profile (AEMP)
* Supported memory types and speeds vary depending on CPU.
* Non-ECC, un-buffered DDR5 memory supports On-Die ECC.
Graphics
1 x HDMI™ port**
* Graphics specifications may vary by CPU.
** Supports 4K@60Hz (HDMI 2.1).
Expansion Slots
AMD Ryzen™ 9000 & 7000 Series Desktop Processors
1 x PCIe 5.0 x16 slot (supports x16 mode)
AMD Ryzen™ 8000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)**
AMD B850 Chipset
1 x PCIe 4.0 x1 slot
* Check PCIe bifurcation table on support site.
** Specifications vary by CPU.
Storage
Total supports 2 x M.2 slots and 4 x SATA 6Gb/s ports
AMD Ryzen™ 9000 & 7000 Series
M.2_1: 2280, PCIe 5.0 x4
M.2_2: 2242/2260/2280, PCIe 4.0 x4
AMD Ryzen™ 8000 Series
M.2_1: 2280, PCIe 4.0 x4
M.2_2: 2242/2260/2280, PCIe 4.0 x4/x2*
AMD B850 Chipset
4 x SATA 6Gb/s ports
* Specifications vary by CPU.
RAID Support
AMD RAIDXpert2 Technology*
Ryzen™ 9000: RAID 0/1/5/10
Ryzen™ 8000: RAID 0/1
Ryzen™ 7000: RAID 0/1/10
* Specifications vary by CPU.
Ethernet
1 x Realtek 1Gb Ethernet
ASUS LANGuard
USB
Rear USB (6 ports):
2 x USB 5Gbps (Type-A)
4 x USB 2.0 (Type-A)
Front USB (7 ports):
1 x USB 5Gbps connector (USB-C)
1 x USB 5Gbps header (2 ports)
2 x USB 2.0 headers (4 ports)
* USB Type-C power delivery: max. 5V/3A.
Audio
Realtek 7.1 Surround Sound High Definition Audio CODEC*
Jack-detection, Multi-streaming, Front Panel Jack-retasking
Supports up to 24-bit/192 kHz playback
Audio shielding, premium capacitors, dedicated PCB layers
* HD audio front panel required.
Back Panel I/O Ports
2 x USB 5Gbps
4 x USB 2.0
1 x HDMI™
1 x Realtek 1Gb LAN
3 x Audio jacks
1 x BIOS FlashBack™ button
Internal I/O
Cooling:
1 x 4-pin CPU Fan
2 x 4-pin Chassis Fan
Power:
1 x 24-pin Main Power
1 x 8-pin CPU Power
Storage:
2 x M.2 (Key M)
4 x SATA 6Gb/s
USB:
1 x USB 5Gbps (USB-C)
1 x USB 5Gbps header
2 x USB 2.0 headers
Misc:
3 x ARGB Gen 2
1 x Clear CMOS
1 x COM
1 x Front Panel Audio
1 x S/PDIF Out
1 x SPI TPM
1 x System Panel header
Special Features
ASUS 5X PROTECTION III
ASUS Q-Design
ASUS Thermal Solution
ASUS EZ DIY
Aura Sync (ARGB Gen 2)
Software Features
ASUS Armoury Crate
Aura Creator
Aura Sync
Fan Xpert 2+
ASUS AI Advisor
ASUS DriverHub
ASUS CPU-Z
TurboV Core
Adobe Creative Cloud (Trial)**
Norton 360 Deluxe (Trial)
WinRAR (Trial)
UEFI BIOS features
* More info at ASUS support.
** Region and model restrictions apply.
BIOS
256 Mb Flash ROM, UEFI AMI BIOS
Manageability
WOL by PME, PXE
Accessories
Cables: 2 x SATA 6Gb/s
Misc: I/O shield, M.2 anchor package
Documentation: Quick start guide
Operating System
Windows 11, Windows 10 64-bit
Form Factor
micro-ATX
8.9" x 8.75" (22.6 cm x 22.2 cm)
