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Square Mini-ITX board, black PCB with silver heatsinks and a gold PCIe slot

ASRock

ASRock Fatal1ty B450 GAMING-ITX/AC AMD motherboard

SKU CH-8STP-0CTCW

Mini ITX board for AM4 Ryzen 2000 and 3000 CPUs with dual-channel DDR4 up to 32 GB, one PCIe 3.0 x16 slot, Ultra M.2 up to Gen3 x4, four SATA3 ports.

  • ProcessorSupports AMD AM4 Socket Ryzen 2000 and 3000 Series Desktop P
  • ChipsetAMD Promontory B450
  • Form factorMini ITX
  • CPU socketAM4
  • Memory slot count2 × 288pin (DDR4)
  • Supported memoryAMD Ryzen series CPUs (Matisse) support DDR4 3200/ 2933/ 266
  • Compact Mini-ITX board fits small builds
  • AM4 socket supports Ryzen 2000 and 3000 series CPUs
  • Dual-channel DDR4 up to 32 GB with speeds to 3466+(OC)
  • Ultra M.2 socket delivers Gen3 x4 32 Gb/s storage bandwidth
  • Intel i211AT LAN plus 802.11ac Wi-Fi module for wired and wireless networking

Compact AM4 platform

The ASRock Fatal1ty B450 GAMING-ITX/AC is a Mini-ITX motherboard for AMD Ryzen 2000 and 3000 series processors. It targets builders who need a small-form-factor system with integrated Wi-Fi and dual-channel DDR4 support. The board uses the AMD Promontory B450 chipset and fits cases designed for the ITX footprint.

Straightforward ITX build

Installation follows the standard Mini-ITX pattern with two 288-pin DDR4 slots and a single PCIe 3.0 x16 slot. The vertical M.2 Key E socket ships with the 802.11ac module already fitted, so wireless is active immediately. A common issue is forgetting to update the BIOS before installing a newer Ryzen 3000 CPU, which prevents the system from posting.

B450 interface limits

The chipset provides four SATA 6.0Gb/s ports with RAID 0, 1 and 10 support. The Ultra M.2 socket runs at PCIe 3.0 x4 (32Gb/s) with Matisse, Summit Ridge, Pinnacle Ridge, Raven Ridge or Picasso CPUs, but drops to x2 (16Gb/s) with other supported processors. Memory tops out at 32GB across two slots, and the LAN controller is limited to 1Gbps.

Rear I/O includes HDMI

The rear panel carries an HDMI port driven by the APU’s integrated Radeon graphics, supporting DirectX 12 and up to 16GB of shared system memory. Audio runs through a Realtek ALC1220 codec delivering 7.1 channels. No legacy video outputs are present, so a discrete GPU or compatible APU is required for display.

How it compares

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

Price $108.99
Cheaper than about 73% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASRock
Product lineFatal1ty
Model nameB450 GAMING-ITX/AC
Processor
ProcessorSupports AMD AM4 Socket Ryzen 2000 and 3000 Series Desktop Processors
CPU socketAM4
ChipsetAMD Promontory B450
Memory
Memory slot count2 × 288pin (DDR4)
Supported memoryAMD Ryzen series CPUs (Matisse) support DDR4 3200/ 2933/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory*
AMD Ryzen series CPUs (Pinnacle Ridge) support DDR4 3466+(OC)/ 3200(OC)/ 2933/ 2667/ 2400/ 2133 ECC & non-ECC, un-buffered memory*
AMD Ryzen series CPUs (Picasso) support DDR4 2933/ 2667/ 2400/ 2133 non-ECC, un-buffered memory*
AMD Ryzen series CPUs (Summit Ridge) support DDR4 3466+(OC)/ 3200(OC)/ 2933(OC)/ 2667/2400/2133 ECC & non-ECC, un-buffered memory*
AMD Ryzen series CPUs (Raven Ridge) support DDR4 3466+(OC)/ 3200(OC)/ 2933/ 2667/ 2400/ 2133 non-ECC, un-buffered memory*
Max supported RAM32 GB
Memory channelsDual Channel
Storage
SATA ports4 x SATA3 6.0Gb/s Connectors, support RAID, NCQ, AHCI and Hot Plug
M.2 slots1 x Ultra M.2 Socket, supports M Key type 2280 M.2 SATA3 6.0Gb/s module and M.2 PCI Express module up to Gen3 x4 (32Gb/s) (with Matisse, Picasso, Summit Ridge, Raven Ridge and Pinnacle Ridge) or Gen3 x2 (16Gb/s) (with Athlon series APU)*
* Supports NVMe SSD as boot disks
SATA and RAID support0/1/10
Audio & video
Audio chipRealtek ALC1220
Sound channels7.1 Channels
Connectivity
Ethernet controllerIntel i211AT
Maximum network speed1 Gbit/s
Wi-Fi standardIntel 802.11 ac Wi-Fi Module
Supports IEEE 802.11 a/b/g/n/ac
Supports Dual-Band (2.4/5 GHz)
Supports high speed wireless connections up to 433 Mbit/s
Bluetooth supportSupports Bluetooth 4.2 / 3.0 + High speed class II
Ports & slots
Additional slots1 x Vertical M.2 Socket (Key E) with the bundled Wi-Fi-802.11ac module (on the rear I/O)
15µ Gold Contact in VGA PCIe Slot (PCIE1)
Rear panel ports2 x Antenna Ports
1 x PS/2 Mouse/Keyboard Port
1 x HDMI Port
1 x DisplayPort 1.2
1 x Optical SPDIF Out Port
2 x USB 2.0 Ports (Supports ESD Protection)*
1 x USB 3.1 Gen2 Type-A Port (10Gb/s) (Supports ESD Protection)
1 x USB 3.1 Gen2 Type-C Port (10Gb/s) (Supports ESD Protection)
2 x USB 3.1 Gen1 Ports (Supports ESD Protection)
1 x RJ-45 LAN Port with LED (ACT/LINK LED and SPEED LED)
HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone (Gold Audio Jacks)
* 1 x Fatal1ty Mouse Port (USB 2.0) is included
Onboard USB headers1 x USB 2.0 Header (Supports 2 USB 2.0 ports) (Supports ESD Protection)
1 x USB 3.1 Gen1 Header (Supports 2 USB 3.1 Gen1 ports) (Supports ESD Protection)
Power
Power connectors1 × 24-pin ATX Power Connector
1 × 8-pin 12 V Power Connector (Hi-Density Power Connector)
Size & build
Form factorMini ITX
Width and length6.7 in × 6.7 in
Compatibility
Windows 11 supportSupported
More details
LightingRGB

Questions about this item

Will my existing DDR4-3200 modules run at their rated speed with a Ryzen 3000 processor?

Yes. The board supports DDR4 3200, 2933, 2667, 2400 and 2133 with Matisse CPUs, so 3200 is a native JEDEC speed for that generation.

Can I add a fast M.2 SSD and still use the supplied Wi-Fi module?

Yes. The Ultra M.2 socket (Key M, 2280) handles PCIe Gen3 x4 or SATA drives, while Wi-Fi uses a separate vertical Key E socket on the rear I/O.

Is the onboard 1 GbE LAN port sufficient for gigabit internet plans?

The Intel i211AT controller provides a dedicated PCIe 1 Gbps link, matching typical gigabit fibre or cable subscriptions.

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