What's the RAM limit on this motherboard?

The RAM limit on this motherboard is 192GB.

Hi, this board works with Ryzen 9 9900X3D?

The Asus website says the Ryzen 9 9900X3D has been validated with every bios available for this board.

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Main image of ASUS TUF GAMING B850M-PLUS WIFI AMD AM5 B850 mATX motherboard, 14+2+1 80A DrMOS stages, DDR5, PCIe 5.0, 3x M.2, Wi-Fi 6E, 2.5Gb LAN, DP, HDMI, USB 10Gbps & 20Gbps Type-C, BIOS FlashBack, Aura Sync

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Alt view image 3 of 6 - ASUS TUF GAMING B850M-PLUS WIFI AMD AM5 B850 mATX motherboard, 14+2+1 80A DrMOS stages, DDR5, PCIe 5.0, 3x M.2, Wi-Fi 6E, 2.5Gb LAN, DP, HDMI, USB 10Gbps & 20Gbps Type-C, BIOS FlashBack, Aura Sync

Alt view image 4 of 6 - ASUS TUF GAMING B850M-PLUS WIFI AMD AM5 B850 mATX motherboard, 14+2+1 80A DrMOS stages, DDR5, PCIe 5.0, 3x M.2, Wi-Fi 6E, 2.5Gb LAN, DP, HDMI, USB 10Gbps & 20Gbps Type-C, BIOS FlashBack, Aura Sync

Alt view image 5 of 6 - ASUS TUF GAMING B850M-PLUS WIFI AMD AM5 B850 mATX motherboard, 14+2+1 80A DrMOS stages, DDR5, PCIe 5.0, 3x M.2, Wi-Fi 6E, 2.5Gb LAN, DP, HDMI, USB 10Gbps & 20Gbps Type-C, BIOS FlashBack, Aura Sync

Alt view image 6 of 6 - ASUS TUF GAMING B850M-PLUS WIFI AMD AM5 B850 mATX motherboard, 14+2+1 80A DrMOS stages, DDR5, PCIe 5.0, 3x M.2, Wi-Fi 6E, 2.5Gb LAN, DP, HDMI, USB 10Gbps & 20Gbps Type-C, BIOS FlashBack, Aura Sync

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ASUS TUF GAMING B850M-PLUS WIFI AMD AM5 B850 mATX motherboard, 14+2+1 80A DrMOS stages, DDR5, PCIe 5.0, 3x M.2, Wi-Fi 6E, 2.5Gb LAN, DP, HDMI, USB 10Gbps & 20Gbps Type-C, BIOS FlashBack, Aura Sync

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Option: TUF GAMING B850M-PLUS WIFI

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Ready for Advanced AI PC: Designed for the future of AI computing, with the power and connectivity needed for demanding AI applications
AMD AM5 Socket: Ready for AMD Socket AM5 for AMD Ryzen 9000 & 8000 & 7000 Series Desktop Processors
Enhanced Power Solution: 14+2+1 80A DrMOS power stages, 8-layer PCB, 8+8 pin ProCool power connectors, alloy chokes and durable capacitors for stable power delivery
Latest M.2 Support: One onboard PCIe 5.0 M.2 slot and two PCIe 4.0 M.2 slots, with massive M.2 heatsink
Ultrafast Connectivity: Wi-Fi 6E, PCIe 5.0 x16 slot, Realtek 2.5Gb Ethernet, rear USB 20Gbps Type-C port, front USB 10Gbps Type-C connector
Comprehensive Cooling: Enlarged VRM and M.2 heatsinks, PCH heatsink, hybrid fan headers and Fan Xpert 4
DIY Friendly Design: PCIe Slot Q-Release, new M.2 Q-Latch, Q-Antenna, Q-Dashboard, Q-LED, BIOS FlashBack and Pre-mounted I/O shield

Overview

Specs

Reviews (20)

Model
Brand	ASUS
Model	TUF GAMING B850M-PLUS WIFI
Part Number	90MB1IY0-M0AAY0

Supported CPU
CPU Socket Type	AM5
CPU Type	Ryzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series

Chipsets
Chipset	AMD B850

Memory
Number of Memory Slots	4x288pin (DDR5)
Memory Standard	Up to 8000+MT/s (OC)
Maximum Memory Supported	192GB
Channel Supported	Dual Channel
ECC Supported	Yes
Buffer Supported	Un-buffered
Memory Feature	Dual channel memory architecture Supports AMD Extended Profiles for Overclocking (EXPO) ASUS Enhanced Memory Profile (AEMP)

Expansion Slots
PCI Express 5.0 x16	AMD Ryzen 9000 & 7000 Series Desktop Processors 1 x PCIe 5.0 x16 slot (supports x16 mode)
PCI Express 4.0 x16	AMD Ryzen 8000 Series Desktop Processors 1 x PCIe 4.0 x16 slot (supports x8/x4 mode)
PCI Express x1	AMD B850 Chipset 1 x PCIe 4.0 x1 slot

Storage Devices
Serial ATA (SATA)	4 x SATA 6Gb/s
M.2	AMD Ryzen 9000 & 7000 Series Desktop Processors M.2_1 slot (Key M), type 2280 (supports PCIe 5.0 x4 mode) M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode) AMD Ryzen 8000 Series Desktop Processors M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode) M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4/x2 mode)** AMD B850 Chipset M.2_3 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
SATA RAID	AMD RAIDXpert2 Technology supports both PCIe RAID 0/1/5/10 and SATA RAID 0/1/5/10. *RAID 5 Function is only supported by AMD Ryzen 9000 series CPU.

Onboard Audio
Audio Chipset	Realtek ALC1220P
Audio Channels	Realtek ALC1220P 7.1 Surround Sound High Definition Audio CODEC - Impedance sense for front and rear headphone outputs - Internal audio Amplifier to enhance the highest quality sound for headphone and speakers - Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking - High quality 120 dB SNR stereo playback output and 113 dB SNR recording input (Line-in) - Supports up to 32-Bit/192 kHz playback* Audio Features - Audio Shielding - Premium audio capacitors - Dedicated audio PCB layers - Audio cover - Unique de-pop circuit * Due to limitations in HDA bandwidth, 32-Bit/192 kHz is not supported for 7.1 Surround Sound audio.

Onboard LAN
Max LAN Speed	2.5Gbps
Wireless LAN	Wi-Fi 802.11 ax
Bluetooth	Bluetooth 5.3

Rear Panel Ports
Back I/O Ports	1 x USB 20Gbps port (1 x USB Type-C) 3 x USB 10Gbps ports (3 x Type-A) 4 x USB 5Gbps ports (4 x Type-A) 4 x USB 2.0 ports (4 x Type-A) 1 x DisplayPort 1 x HDMI port 1 x Wi-Fi module 1 x Realtek 2.5Gb Ethernet port 5 x Audio jacks 1 x BIOS FlashBack button

Internal I/O Connectors
Onboard USB	1 x USB 10Gbps connector (supports USB Type-C) 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports 2 x USB 2.0 headers support 3 additional USB 2.0 ports
Other Connectors	Fan and Cooling Related 1 x 4-pin CPU Fan header 1 x 4-pin CPU OPT Fan header 1 x 4-pin AIO Pump header 3 x 4-pin Chassis Fan headers Miscellaneous 3 x Addressable Gen 2 headers 1 x Clear CMOS header 1 x Chassis Intrusion header 1 x COM Port header 1 x Front Panel Audio header (F_AUDIO) 1 x 10-1 pin Front System Panel header

Physical Spec
Form Factor	Micro ATX
Dimensions (W x L)	9.6" x 9.6"
Power Pin	1 x 24-pin Main Power connector 2 x 8-pin +12V CPU Power connectors

Software Feature
BIOS Feature	256 Mb Flash ROM, UEFI AMI BIOS
Software	ASUS Exclusive Software Armoury Crate - Aura Creator - Aura Sync - Fan Xpert 4 - Power Saving ASUS DriverHub ASUS GlideX TurboV Core TUF GAMING CPU-Z DTS Audio Processing Norton 360 for Gamers (60 Days Free Trial) WinRAR (40 Days Free Trial) UEFI BIOS ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash 3 - ASUS UEFI BIOS EZ Mode - ASUS MyHotkey
Windows 11	Supported

Features
Features	ASUS TUF PROTECTION - DIGI+ VRM (- Digital power design with DrMOS) - ESD Guards - TUF LANGuard - Overvoltage protection - SafeSlot - Stainless-steel back I/O ASUS Q-Design - M.2 Q-Latch - PCIe Slot Q-Release - Q-Antenna - Q-Dashboard - Q-DIMM - Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green]) ASUS Thermal Solution - M.2 heatsink - VRM heatsink design ASUS EZ DIY - BIOS FlashBack button - BIOS FlashBack LED - ProCool - Pre-mounted I/O shield - SafeDIMM Aura Sync - Addressable Gen 2 headers

Packaging
Package Contents	Cables 2 x SATA 6Gb/s cables Miscellaneous 1 x ASUS WiFi Q-Antenna 1 x TUF GAMING sticker 2 x M.2 rubber packages 1 x Screw package for M.2 SSD Documentation 1 x Quick start guide

Additional Information
First Listed on Newegg	January 09, 2025

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Warranty Notice:
This product does not include manufacturer warranty when purchased or used outside of its designated sales region. By purchasing internationally, you acknowledge that warranty support from the manufacturer will not be available.

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ASUS TUF GAMING B850M-PLUS WIFI AMD AM5 B850 mATX motherboard, 14+2+1 80A DrMOS stages, DDR5, PCIe 5.0, 3x M.2, Wi-Fi 6E, 2.5Gb LAN, DP, HDMI, USB 10Gbps & 20Gbps Type-C, BIOS FlashBack, Aura Sync

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ASUS TUF GAMING B850M-PLUS WIFI AMD AM5 B850 mATX motherboard, 14+2+1 80A DrMOS stages, DDR5, PCIe 5.0, 3x M.2, Wi-Fi 6E, 2.5Gb LAN, DP, HDMI, USB 10Gbps & 20Gbps Type-C, BIOS FlashBack, Aura Sync

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