ASUS ROG Strix B850-I Gaming WiFi AMD motherboard & Ryzen 7 9700X CPU Combo
- AM5
- AMD B850
ASUS
AM5 motherboard with 12-core Ryzen 9 9900X CPU, DDR5 to 192 GB, WiFi 7, Bluetooth 5.4, four M.2 slots, and 19 USB ports including 20 Gbps Type-C
Motherboard ROG STRIX B850-F GAMING WIFI
CPU + Ryzen 9 9900X
This motherboard and CPU combo pairs the ASUS ROG STRIX B850-F GAMING WIFI board with the AMD Ryzen 9 9900X processor. The board uses the AMD B850 chipset and AM5 socket to support Ryzen 9000, 8000 and 7000 series CPUs. It targets builders who want a ready-to-go platform for advanced AI workloads and high-refresh gaming. The 12-core, 24-thread CPU reaches a 5.6 GHz max boost clock and provides 64 MB of L3 cache.
Four DDR5 slots accept up to 192 GB of memory in dual-channel mode with ECC and AEMP support. Two M.2 slots run at PCIe 5.0 x4 with Ryzen 9000 and 7000 processors, while the primary x16 slot also operates at PCIe 5.0. With Ryzen 8000 series CPUs the same slots drop to PCIe 4.0 speeds and the x16 slot runs at x8 or x4. The second x16 slot is wired to the chipset at PCIe 4.0 x4 and shares bandwidth with the third M.2 slot.
The voltage regulator module uses 16+2+2 power stages rated at 80A each, fed by dual ProCool connectors, alloy chokes and durable capacitors. This design delivers stable current to the 12-core CPU during heavy multi-threaded loads and overclocking. Massive heatsinks with an integrated I/O cover and high-conductivity thermal pads keep the power circuitry cool. The board also includes WiFi 7, 2.5 Gbps LAN, Bluetooth 5.4 and a USB 20Gbps Type-C front-panel header.
| Brand | ASUS |
|---|---|
| Model | ROG STRIX B850-F GAMING WIFI+R9 9900X |
| CPU Socket Type | AM5 |
| Chipset | AMD B850 |
| Number of Memory Slots | 4x288pin (DDR5) |
| 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) |
| PCI Express 5.0 x16 | AMD Ryzen 9000 & 7000 Series Desktop Processors - 1 x PCIe 5.0 x16 slot with Q-Release Slim AMD Ryzen 8000 Series Desktop Processors - 1 x PCIe 5.0 x16 slot with Q-Rlease Slim (supports PCIe 4.0 x8 or x4 mode)* |
| PCI Express 4.0 x16 | 1 x PCIe 4.0 x16 slot (supports x4 mode)** * Specifications vary by CPU types. ** PCIEX16(G4) slot (supports x4 mode) from AMD B850 Chipset shares bandwidth with M.2_3 |
| Serial ATA (SATA) | 2 x SATA 6Gb/s |
| M.2 | AMD Ryzen 7000 & 9000 Series Desktop Processors M.2_1 (Key M), type 2242/2260/2280 (supports PCIe 5.0x4 mode) M.2_2 (Key M), type 2280/22110 (supports PCIe 5.0 x4 mode) AMD Ryzen 8000 Series Desktop Processors M.2_1 (Key M), type 2242/2260/2280 (supports PCIe 4.0x4 mode) M.2_2 (Key M), type 2280/22110 (supports PCIe 4.0 x4/x2 mode) AMD B850 Chipset M.2_3 (Key M), type 2280 (supports PCIe 4.0 x4)** M.2_4 (Key M), type 2280 (supports PCIe 4.0 x4) ** M.2_3 slot shares bandwidth with PCIEX16(G4). When PCIEX16(G4) slot is operating, M.2_3 will be disabled. |
| SATA RAID | 0/1/5/10 |
| Audio Chipset | Realtek ALC4080 |
| Audio Channels | ROG SupremeFX 7.1 Surround Sound High Definition Audio CODEC ALC4080* - Impedance sense for front and rear headphone outputs - Supports: Jack-detection, Multi-streaming, Front Panel MIC Jack-retasking - High quality 120 dB SNR stereo playback output and 110 dB SNR recording input - Supports up to 32-Bit/384 kHz playback on front panel Audio Features - SupremeFX Shielding Technology - Savitech SV3H712 AMP - Rear optical S/PDIF out port - Premium audio capacitors - Audio cover |
| Max LAN Speed | 2.5Gbps |
| Wireless LAN | Wi-Fi 802.11 be |
| Bluetooth | Bluetooth 5.4 |
| Back I/O Ports | 1 x USB 20Gbps port (1 x USB Type-C) 3 x USB 10Gbps ports (2 x Type-A + 1 x USB Type-C) 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 Intel 2.5Gb Ethernet port 2 x Audio jacks 1 x Optical S/PDIF out port 1 x BIOS FlashBack button 1 x Clear CMOS button |
| 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 4 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 4 x 4-pin Chassis Fan headers Miscellaneous 3 x Addressable Gen 2 headers 1 x CPU Over voltage jumper 1 x Front Panel Audio header (F_AUDIO) 1 x Power button 1 x 10-1 pin Front System Panel header 1 x Thermal Sensor header 1 x Thunderbolt (USB4) header |
| Form Factor | ATX |
| Dimensions (W x L) | 12.0" x 9.6" |
| Power Pin | 1 x 24-pin Main Power connector 2 x 8-pin +12V CPU Power connector |
| BIOS Feature | 256 Mb Flash ROM, UEFI AMI BIOS |
| Software | ROG Exclusive Software - ROG CPU-Z - Dolby Atmos ASUS Exclusive Software Armoury Crate - AIDA64 Extreme (60 days free trial) - Aura Creator - Aura Sync - Fan Xpert 4 - GameFirst - HWiNFO - Power Saving ASUS DriverHub ASUS GlideX TurboV Core Adobe Creative Cloud (Free Trial) 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 | Extreme Engine Digi+ - 5K Black metallic capacitors ASUS Q-Design - M.2 Q-Latch - M.2 Q-Release - M.2 Q-Slide - PCIe Slot Q-Release Slim (with PCIe SafeSlot) - Q-Antenna - Q-Dashboard - Q-DIMM - Q-LED (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green]) - Q-Slot ASUS Thermal Solution - M.2 heatsink backplate - M.2 heatsink ASUS EZ DIY - BIOS FlashBack button - BIOS FlashBack LED - Clear CMOS button - ProCool - Pre-mounted I/O shield - SafeSlot - SafeDIMM Aura Sync - Addressable Gen 2 headers |
| Package Contents | 1 x AMD Ryzen 9 9900X CPU Cables 2 x SATA 6Gb/s cables Miscellaneous 1 x ASUS WiFi Q-Antenna 1 x Cable ties package 1 x M.2 Q-Latch package 1 x M.2 Q-Slide package 1 x ROG key chain 1 x ROG Strix stickers 4 x M.2 rubbers Documentation 1 x Quick start guide |
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The bundle includes the 12-core Ryzen 9 9900X with 24 threads, 5.6 GHz max boost and 64 MB L3 cache already installed. Buying the board alone means sourcing a compatible AM5 processor separately.
The 12 Zen 5 cores can hit 5.6 GHz on light or burst workloads when cooling and power allow. Sustained all-core speeds will sit lower depending on your cooler and the 16+2+2 power stage design rated at 80 A per stage.
M.2_1 and M.2_2 run at PCIe 5.0 x4 with Ryzen 9000 and 7000 series CPUs, giving up to 5.0 x4 bandwidth. With Ryzen 8000 series they drop to PCIe 4.0 x4.
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