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ATX motherboard, black PCB with silver heatsinks and rear I/O shield

ASRock Open box

ASRock B850 Live Mixer WiFi AMD motherboard AM5 256 GB DDR5

SKU CH-DPFS-ZGMJ8 MPN B850 Live Mixer WiFi

Socket AM5 board with 14-phase power, DDR5 to 8000 OC, PCIe 5.0 x16, two Gen4 M.2, two SATA ports, 7.1 audio

  • ProcessorRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
  • ChipsetAMD B850
  • Form factorATX
  • CPU socketAM5
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryUp to 8000+(OC)
  • Supports Ryzen 7000, 8000 and 9000 series CPUs on AM5 socket
  • 14+2+1 phase power design with 80A Dr.MOS for stable delivery
  • Four DDR5 slots reach 8000+ MT/s OC with 256 GB maximum capacity
  • One PCIe 5.0 x16 slot plus two PCIe 4.0 x16 slots for graphics and add-in cards
  • Realtek ALC1220 7.1-channel audio with Nahimic enhancement for clear sound

AM5 DDR5 motherboard for Ryzen 7000 8000 9000

The ASRock B850 Live Mixer WiFi is an ATX motherboard built around the AMD B850 chipset and the AM5 socket. It accepts Ryzen 7000 8000 and 9000 series processors and provides four DDR5 DIMM slots. The board targets builders who want a full-size platform with extensive rear and front USB connectivity.

256 GB DDR5 capacity and 8000 OC headroom

Four 288-pin slots support up to 256 GB of un-buffered DDR5 running in dual-channel mode. AMD EXPO and Intel XMP 3.0 profiles are supported for speeds up to 8000 MT/s overclocked. ECC memory is accepted for workloads that require error correction. The memory subsystem scales with the installed CPU generation and cooling.

PCIe 5.0 graphics slot and multiple M.2 sockets

One PCIe 5.0 x16 slot runs at Gen 5 x16 with Ryzen 9000 and 7000 chips and at reduced widths with Ryzen 8000 series parts. Two additional PCIe 4.0 x16 slots operate at x4. The CPU provides one Gen 5 M.2 and one Gen 4 M.2 while the chipset adds another Gen 4 M.2. Two SATA 6 Gb/s ports and RAID 0 1 10 support round out storage options.

How it compares

Measured against everything we stock in Motherboards for AMD CPUs, at today’s prices. Recalculated every night.

Price $135.99
Cheaper than about 66% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASRock
Model nameB850 Live Mixer WiFi
Processor
ProcessorRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
CPU socketAM5
ChipsetAMD B850
Memory
Memory slot count4 × 288pin (DDR5)
Supported memoryUp to 8000+(OC)
Max supported RAM256 GB
Memory channelsDual Channel
Memory profilesAMD EXPO / Intel XMP 3.0
ECC supportYes
BufferingUn-buffered
Storage
SATA ports2 x SATA 6Gb/s
Audio & video
Audio chipRealtek ALC1220
Sound channels7.1 Channels
Connectivity
Ethernet controllerDragon RTL8125BG
Maximum network speed2.5 Gbit/s
Wi-Fi standardWi-Fi 802.11 be
Bluetooth support5.4
Ports & slots
PCIe 4.0 x16 slots2 x PCIe 4.0 x16 Slots (PCIE2 and PCIE3), support x4 mode*
Onboard USB headers2 x USB 2.0 Headers (Support 4 USB 2.0 ports)
2 x USB 3.2 Gen1 Headers (Support 4 USB 3.2 Gen1 ports)
1 x Front Panel Type C USB 3.2 Gen2 × 2 Header (20 Gb/s)
Power
Power connectors1 × 24 pin ATX Power Connector
1 × 8 pin 12 V Power Connector (Hi-Density Power Connector)
1 × 4 pin 12 V Power Connector (Hi-Density Power Connector)
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Shipping weight2.02 kg
Package size356 × 292 × 83 mm
Compatibility
Windows 11 supportWindows OS 10 64-bit / 11 64-bit
More details
BIOS256Mb AMI UEFI Legal BIOS with GUI support

Questions about this item

Will my existing DDR5 memory modules fit the four 288-pin slots and run at their rated speeds?

The board has four 288-pin DDR5 slots supporting dual-channel operation up to 256 GB. Memory performance profiles include AMD EXPO and Intel XMP 3.0, with speeds up to 8000+(OC) depending on the modules installed.

How can I verify the PCIe 5.0 x16 slot is running at Gen5 x16 after installing a Ryzen 9000 series processor?

With a Ryzen 9000 series CPU the primary PCIe 5.0 x16 slot (PCIE1) operates at Gen5 x16. Confirm the link width and generation in the BIOS hardware monitor or via a system information utility such as GPU-Z once the system posts.

Which cables and accessories are included in the open-box package, and what must I source separately?

Open-box units typically include the motherboard and I/O shield only. You will need to provide DDR5 memory, an AM5 CPU cooler, SATA cables for the two 6 Gb/s ports, M.2 mounting screws for the three Key-M sockets, and a case with front-panel USB headers for the 3.2 Gen2x2 Type-C and Gen1 connectors.

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