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ASUS TUF Gaming B860-PLUS WIFI ATX motherboard with Intel Ultra 9 285K CPU and thermal grease tube

ASUS

ASUS TUF GAMING B860-PLUS WIFI Intel Ultra 9 285K Combo

SKU CH-T04Q-XCQHX

ATX LGA 1851 motherboard paired with Intel Core Ultra 9 285K processor, DDR5 memory support up to 8666 MT/s, PCIe 5.0 M.2 slot, Wi-Fi 7 and 2.5 Gb Ethernet included

  • CPU socketLGA 1851
  • ChipsetIntel B860
  • Form factorATX
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryUp to 8666+MT/s (OC)
  • Max supported RAM192 GB

Model TUF GAMING B860-PLUS WIFI

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CPU +Ultra 9 285K

  • Ready for Intel Core Ultra Series 2 processors with LGA 1851 socket
  • 12+2+1 80A DrMOS power stages deliver stable power to the CPU
  • DDR5 memory support up to 8666 MT/s over four slots for 192 GB capacity
  • One PCIe 5.0 and two PCIe 4.0 M.2 slots, each with a heatsink
  • Wi-Fi 7 and 2.5 Gb Ethernet plus Bluetooth 5.4 for fast networking

Combo for Intel Core Ultra 9 285K

This bundle pairs the ASUS TUF GAMING B860-PLUS WIFI motherboard with the Intel Core Ultra 9 285K processor and Shin-Etsu X-23-7868-2D thermal grease. It targets builders who want a ready-to-go platform for advanced AI workloads and high-performance computing. The LGA 1851 socket and B860 chipset deliver a modern foundation for the 125W Arrow Lake CPU.

Installation notes and common issues

The board includes DIY-friendly features such as PCIe Slot Q-Release, M.2 Q-Latch, Q-Antenna and a pre-mounted I/O shield to simplify assembly. BIOS FlashBack allows firmware updates without a CPU installed. Builders must supply their own cooler because the processor ships without one; applying the included thermal grease correctly is essential for the 125W part.

Platform limits and interface constraints

The motherboard provides one PCIe 5.0 x16 slot from the CPU and one PCIe 4.0 x16 slot from the chipset that operates at x4 mode. Bandwidth is shared between the chipset x16 and x1 slots, so the x16 drops to x2 when the x1 is populated. Memory tops out at 192 GB of DDR5 across four slots with support up to 8666 MT/s overclocked. Networking uses Wi-Fi 7 and 2.5 Gb Ethernet.

How it compares

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

Price $1,174.99
Pricier than about 94% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameASUS
Model nameTUF GAMING B860-PLUS WIFI+Ultra 9 285K
Part numberTUF GAMING B860-PLUS WIFI+Ultra 9 285K
Processor
CPU socketLGA 1851
ChipsetIntel B860
Memory
Memory slot count4 × 288pin (DDR5)
Supported memoryUp to 8666+MT/s (OC)
Max supported RAM192 GB
Memory channelsDual Channel
Storage
SATA ports4 x SATA 6Gb/s
M.2 slotsIntel Core Ultra Processors(Series 2)*
M.2_1 slot (Key M), type 2280 (supports PCIe 5.0 x4 mode)
Intel B860 Chipset
M.2_2 slot (Key M), type 2280/22110 (supports PCIe 4.0 x4 mode)
M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
SATA and RAID support* Intel Rapid Storage Technology supports, SATA RAID 0/1/5/10.
Audio & video
Sound channelsRealtek 7.1 Surround Sound High Definition Audio CODEC*
- Supports: Jack-detection, Multi-streaming, Front Panel Jack-retasking
- Supports up to 24-Bit/192 kHz playback
Audio Features
- Audio Shielding
- Rear optical S/PDIF out port
- Premium audio capacitors
- Dedicated audio PCB layers
- Audio cover
* Due to limitations in HDA bandwidth, 32-Bit/192 kHz is not supported for 7.1 Surround Sound audio.
Connectivity
Maximum network speed2.5 Gbit/s
Wi-Fi standardWi-Fi 802.11 be
Bluetooth support5.4
Ports & slots
PCIe 5.0 x16 slotsIntel Core Ultra Processors (Series 2)
1 x PCIe 5.0 x16 slot
PCIe 4.0 x16 slotsIntel B860 Chipset
1 x PCIe 4.0 x16 slot (supports x4 mode)*
PCIe x1 slots1 x PCIe 4.0 x1 slot*
* PCIEX16(G4) shares bandwidth with PCIEX1(G4). When PCIEX1(G4) runs at PCIe x1 mode, PCIEX16(G4) will only run at PCIe x2 mode.
Onboard USB headers1 x USB 10 Gbit/s connector (supports USB Type-C)
1 x USB 5 Gbit/s header supports 2 additional USB 5 Gbit/s ports
1 x USB 2.0 header supports 2 additional USB 2.0 ports
Power
Power connectors1 × 24-pin Main Power connector
2 × 8-pin +12 V CPU Power connectors
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Compatibility
Windows 11 support(22H2 & later)
More details
BIOS256 Mb Flash ROM, UEFI AMI BIOS

Other versions of this model

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Questions about this item

How can I confirm the Intel Ultra 9 285K is running at its 125W base power after assembly?

Enter the BIOS and check the CPU package power reading under hardware monitor; it should idle well below 125W and rise toward 125W under an all-core load such as Cinebench.

The combo lists motherboard, CPU and Shin-Etsu X-23-7868-2D thermal grease — what else must I buy to finish the build?

You still need DDR5 memory modules, a graphics card, storage drives, a power supply with dual 8-pin CPU connectors, a CPU cooler and a chassis.

The board has three M.2 slots — which one should I use for the fastest OS drive?

Use the M.2_1 slot; it is wired to the CPU and supports PCIe 5.0 x4, while M.2_2 and M.2_3 run at PCIe 4.0 x4 from the chipset.

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