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Rectangular ATX motherboard in dark grey and teal with large heatsinks and four DDR5 slots

ASRock Open box

ASRock B850 Riptide WiFi AMD motherboard AM5 DDR5 256 GB

SKU CH-7T5E-C0A53 MPN B850 Riptide WiFi

ATX board for AM5 Ryzen CPUs, four DDR5 slots up to 256 GB, PCIe 5.0 x16, four M.2 sockets and Killer E3100G LAN

  • 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)
  • 14+2+1 phase 80A Dr.MOS delivers stable power to Ryzen 9000/8000/7000 CPUs
  • 4 DDR5 slots support up to 256GB at 8000+ OC with EXPO/XMP 3.0
  • PCIe 5.0 x16 slot runs Gen5 with 9000/7000 series and Gen4 with 8000 series
  • 1 Blazing M.2 Gen5x4 128Gb/s plus 3 Hyper M.2 Gen4x4 64Gb/s and 4 SATA 6Gb/s
  • Realtek ALC4082 7.1 audio with Nahimic plus Killer E3100G LAN and USB 3.2 Gen2x2 Type-C

AM5 platform board for Ryzen 7000.

The ASRock B850 Riptide WiFi is an ATX motherboard built around the AMD B850 chipset and AM5 socket. It accepts Ryzen 7000, 8000 and 9000 series processors. Four 288-pin DDR5 slots support dual-channel memory up to 256 GB with AMD EXPO and Intel XMP 3.0 profiles. ECC un-buffered modules are supported.

14+2+1 phase 80A Dr.MOS power and Gen5 M.2

A 14+2+1 phase design uses 80A Dr.MOS for VCore and SOC delivery. One Blazing M.2 socket runs at PCIe 5.0 x4 (128 Gb/s) for 2280 drives. Three Hyper M.2 sockets run at PCIe 4.0 x4 (64 Gb/s) for 2260 or 2280 drives. Four SATA 6Gb/s ports add further storage.

PCIe 5.0 x16 slot scales with CPU generation

The primary PCIe 5.0 x16 slot operates at Gen5 x16 with Ryzen 9000 and 7000 series CPUs, Gen4 x8 with 8000 Phoenix 1 series and Gen4 x4 with 8000 Phoenix 2 series. A second PCIe 4.0 x16 slot runs at x4 mode. This behaviour decides whether a graphics card or add-in card receives full bandwidth.

How it compares

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

Price $182.99
Cheaper than about 56% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASRock
Model nameB850 RIPTIDE 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 ports4 x SATA 6Gb/s
SATA and RAID support0/1/10
Audio & video
Audio chipRealtek ALC4082
Sound channels7.1 Channels
Connectivity
Ethernet controllerKiller E3100G
Maximum network speed2.5 Gbit/s
Wi-Fi standardWi-Fi 802.11 be
Bluetooth support5.4
Ports & slots
PCIe 4.0 x16 slots1 x PCIe 4.0 x16 Slot (PCIE2), supports 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 (Hi-Density Power Connector)
2 × 8 pin 12 V Power Connectors (Hi-Density Power Connector)
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Shipping weight1.81 kg
Package size356 × 279 × 76 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

Does the 14+2+1 phase power design with 80A Dr.MOS components require any specific cooling or maintenance over time?

The 14+2+1 phase design uses 80A Dr.MOS for VCore and SOC; no user-serviceable parts are on the VRM heatsinks, so maintenance is limited to keeping case airflow clear of dust.

What limits PCIe 5.0 x16 bandwidth on the primary slot when a Ryzen 8000 series CPU is installed?

With Ryzen 8000 Phoenix 1 the slot runs at Gen4x8, and with Phoenix 2 at Gen4x4, so the CPU generation itself is the first bottleneck under sustained load.

How loud does the board get when all four M.2 slots and the 80A VRM are saturated for hours?

The board has no active cooling; noise depends entirely on case fans and CPU cooler, while the VRM and M.2 heatsinks dissipate heat passively.

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