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ASUS ROG Strix X870-I Gaming WiFi motherboard
ASUS

ASUS ROG Strix X870-I Gaming WiFi

Socket:
AM5
Chipset:
X870
Form Factor:
Mini-ITX
Memory:
2x DDR5, up to 128GB
M.2 Slots:
2 (1x PCIe 5.0)
Network:
Wi-Fi 7 + 2.5GbE, dual USB4

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Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.

Manufacturer: ASUS Last updated: September 11, 2026

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ASUS ROG Strix X870-I Gaming WiFi Review

The ROG Strix X870-I Gaming WiFi packs X870-tier features into a Mini-ITX footprint, targeting small-form-factor builders who still want PCIe 5.0 storage, dual USB4 ports, and Wi-Fi 7 without stepping up to a full ATX board. It's built for Ryzen 9000/8000/7000 processors in SFF cases where every millimeter of board space is contested.

The board uses a 10+2+1 power stage design; ASUS does not publish an exact per-stage amperage figure for this SKU, but the layout is sized for Ryzen 9000 non-X3D chips at stock-to-moderate overclocks in a thermally constrained ITX case rather than sustained all-core extreme overclocking. Two DDR5 DIMM slots support up to 128GB total capacity, with AMD EXPO enabling speeds of 8600+ MT/s depending on CPU generation and DIMM population, though ITX boards typically see tighter memory OC headroom than ATX siblings due to shorter trace lengths and single-sided cooling. A single PCIe 5.0 x16 slot handles the GPU, while two M.2 slots cover storage: one PCIe 5.0 x4 and one PCIe 4.0 x4, both underneath dedicated heatsinks to manage thermals in the tight ITX chassis. Dual USB4 ports (40Gbps) are a standout feature at this size, alongside 2.5GbE wired networking, Wi-Fi 7 (802.11be), and Bluetooth 5.4. Audio runs through an ESS SABRE9260Q DAC, and the board supports an optional ROG Strix Hive II external I/O hub for builders who need more rear ports. Against the ASUS Prime X870-P WiFi already in this catalog, the Strix X870-I trades ATX expansion room for a Mini-ITX footprint while keeping the same X870 chipset feature set, making it the pick for SFF builds rather than full-tower rigs.

Power Delivery and VRM Design

The board uses a 10+2+1 power stage design; ASUS does not publish an exact per-stage amperage figure for this SKU, but the layout is sized for Ryzen 9000 non-X3D chips at stock-to-moderate overclocks in a thermally constrained ITX case rather than sustained all-core extreme overclocking.

Memory Support

Two DDR5 DIMM slots support up to 128GB total capacity, with AMD EXPO enabling speeds of 8600+ MT/s depending on CPU generation and DIMM population, though ITX boards typically see tighter memory OC headroom than ATX siblings due to shorter trace lengths and single-sided cooling.

Expansion and Storage

A single PCIe 5.0 x16 slot handles the GPU, while two M.2 slots cover storage: one PCIe 5.0 x4 and one PCIe 4.0 x4, both underneath dedicated heatsinks to manage thermals in the tight ITX chassis.

Connectivity

Dual USB4 ports (40Gbps) are a standout feature at this size, alongside 2.5GbE wired networking, Wi-Fi 7 (802.11be), and Bluetooth 5.4. Audio runs through an ESS SABRE9260Q DAC, and the board supports an optional ROG Strix Hive II external I/O hub for builders who need more rear ports.

Comparison to Alternatives

Against the ASUS Prime X870-P WiFi already in this catalog, the Strix X870-I trades ATX expansion room for a Mini-ITX footprint while keeping the same X870 chipset feature set, making it the pick for SFF builds rather than full-tower rigs.

Our verdict

Reviewed by Burooj Alam. Rated by us, not by users.

Best for

  • SFF builders who want dual USB4 and Wi-Fi 7 in a Mini-ITX X870 board
  • Ryzen 9000 builds in compact cases where PCIe 5.0 M.2 storage matters

Not for

  • Anyone planning sustained extreme all-core overclocking, where ATX VRM headroom helps more
  • Builders needing more than one PCIe slot or more than two M.2 sockets

Specifications

What these specs mean

Identity

Model NumberROG Strix X870-I Gaming WiFi
Form FactorMini-ITX

Platform and CPU compatibility

PlatformAMD
SocketAM5
ChipsetX870
Newest CPU Family SupportedRyzen 9000
Oldest CPU Family SupportedRyzen 7000
CPU Overclocking SupportedYes

Memory

Memory TypeDDR5
Memory Slots2
Max Memory128 GB
Max Rated Memory Speed8600 MT/s
ECC Memory SupportUnbuffered ECC

Expansion & Connectivity

M.2 Slots2
PCIe 5.0 SupportYes
Wi-Fi OnboardYes

M.2 storage

M.2 PCIe 5.0 Slots1
M.2 PCIe 4.0 Slots1
M.2 CPU Attached Slots1

Other storage

SATA Ports2

PCIe expansion

PCIe x16 Slots1
Primary Graphics Slot GenPCIe 5.0

Rear USB

Rear USB4 or TB Ports2
Rear USB 10Gbps Ports5
Rear USB 2.0 Ports3

Internal headers

Front USB-C Header Speed10Gbps
Front USB-C Power Delivery15 W
Fan and Pump Headers3
ARGB Headers2

Power delivery

Vcore Power Stages10
EPS 12V ConfigurationOne 8-pin

Builder features

BIOS FlashbackYes
Tool Free M.2 RetentionYes

Network and audio

Max Ethernet Speed2.5 Gbps
Ethernet Port Count1
Wi-Fi StandardWi-Fi 7
Bluetooth Version5.4
Audio CodecESS SABRE9260Q DAC

FAQs

What are the key specifications of the ASUS ROG Strix X870-I Gaming WiFi (AM5/AMD X870/Mini-ITX/10+2+1 Power Stages/Dual USB4)?

Key specs for the ASUS ROG Strix X870-I Gaming WiFi: Chipset X870, Socket AM5, Socket Type AM5, Max Memory 128 GB, Form Factor Mini-ITX, VRM 10+2+1 phase (amperage not officially disclosed by ASUS).

Will the ASUS ROG Strix X870-I Gaming WiFi (AM5/AMD X870/Mini-ITX/10+2+1 Power Stages/Dual USB4) work with my current setup?

The ASUS ROG Strix X870-I Gaming WiFi (AM5/AMD X870/Mini-ITX/10+2+1 Power Stages/Dual USB4) lists Socket is AM5. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the ASUS ROG Strix X870-I Gaming WiFi (AM5/AMD X870/Mini-ITX/10+2+1 Power Stages/Dual USB4) best suited to?

Best suited to: SFF builders who want dual USB4 and Wi-Fi 7 in a Mini-ITX X870 board; Ryzen 9000 builds in compact cases where PCIe 5.0 M.2 storage matters.

What are the drawbacks of the ASUS ROG Strix X870-I Gaming WiFi (AM5/AMD X870/Mini-ITX/10+2+1 Power Stages/Dual USB4)?

Not the best fit for: Anyone planning sustained extreme all-core overclocking, where ATX VRM headroom helps more; Builders needing more than one PCIe slot or more than two M.2 sockets.

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