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ASUS ROG MAXIMUS Z890 HERO motherboard with Intel Core Ultra 9 285K CPU installed, black ATX board with silver heatsinks and I/O shield

ASUS

ASUS ROG MAXIMUS Z890 HERO + Core Ultra 9 285K Intel motherboard

SKU CH-T3AQ-K1PBM

Z890 ATX motherboard paired with a Core Ultra 9 285K, 22+2+1+2 power stages, DDR5 up to 9200 MT/s, WiFi 7, Thunderbolt 4 and 5 Gbps plus 2.5 Gbps LAN

  • ProcessorIntel Core Ultra Processors (Series 2)
  • ChipsetIntel Z890
  • Form factorATX
  • CPU socketLGA 1851
  • Memory slot count4 × 288pin (DDR5)
  • Max supported RAM256 GB

Motherboard ROG MAXIMUS Z890 HERO

CPU +Ultra9 285K

  • AI-ready platform with Intel Core Ultra 9 285K processor
  • Robust 22+2+1+2 power stages rated up to 110A each
  • DDR5 memory support up to 9200 MT/s across four slots
  • Dual LAN at 5Gbps and 2.5Gbps plus WiFi 7
  • Thunderbolt 4 and 7.1-channel audio for high-speed I/O

AI-Ready Platform for Core Ultra 9

The ROG MAXIMUS Z890 HERO motherboard paired with the Intel Core Ultra 9 285K delivers an LGA 1851 platform built for advanced AI workloads. Four DDR5 slots support up to 256 GB at 9200 MT/s with NitroPath DRAM Technology, DIMM Fit, DIMM Flex and AEMP III. The 22+2+1+2 power stage design uses 110 A, 90 A and 80 A stages with ProCool II connectors, MicroFine alloy chokes and premium metallic capacitors.

Connectivity and Expansion Layout

A PCIe 5.0 x16 slot and a PCIe 4.0 x16 slot from the chipset provide graphics and add-in card options, while a PCIe 4.0 x1 slot adds further flexibility. Storage includes one PCIe 5.0 M.2 slot and additional PCIe 4.0 M.2 slots supporting 2242, 2260, 2280 and 22110 form factors, plus four SATA 6 Gb/s ports. Rear I/O covers 5 Gbps and 2.5 Gbps Ethernet, WiFi 7, Bluetooth 5.4 and Thunderbolt 4 alongside 7.1-channel audio.

Thermals and Power Behaviour

The CPU carries a 125 W base power rating with 36 MB L3 and 40 MB L2 cache, and no cooler is included in the box. AI Cooling II manages fan curves automatically based on system load, while the robust VRM heatsink array handles the high-current power stages during sustained workloads. AI Networking II optimises traffic for lower latency without extra user intervention.

How it compares

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

Price $1,590.99
Pricier than about 95% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameASUS
Product lineROG MAXIMUS Z890 HERO+Ultra9 285K
Model nameROG MAXIMUS Z890 HERO+Ultra9 285K
Processor
ProcessorIntel Core Ultra Processors (Series 2)
CPU socketLGA 1851
ChipsetIntel Z890
Memory
Memory slot count4 × 288pin (DDR5)
Max supported RAM256 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 2242/2260/2280/22110 (supports PCIe 5.0 x4 mode)
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)**
M.2_4 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 mode)
Intel Z890 Chipset
M.2_5 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
M.2_6 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)
SlimSAS slot supports PCIe 4.0 x4 mode or up to 4 SATA devices via a transfer cable. The cable is purchased separa
SATA and RAID support* Intel Rapid Storage Technology supports PCIe RAID 0/1/5/10, SATA RAID 0/1/5/10, M.2 slot from CPU only supports RAID 0/1/5
Audio & video
Sound channels7.1 Channels
Connectivity
Maximum network speed5 Gbit/s + 2.5 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 (supports x16 or x8/x4/x4 modes)**
** When M.2_3 or M.2_4 is enabled, PCIEX16(G5) will run x8 only.
PCIe 4.0 x16 slotsIntel Z890 Chipset
1 x PCIe 4.0 x16 slot (supports x4 mode)
PCIe x4 slots1 x PCIe 4.0 x1 slot
Power
Power connectors1 × 24-pin Main Power connector
2 × 8-pin +12 V CPU Power connectors
1 × 8-pin PCIe Power connector
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

5 more in the same range

Questions about this item

What PCIe generation does the primary x16 slot use and what lane width does it drop to when M.2_3 or M.2_4 is populated?

The CPU-linked PCIe 5.0 x16 slot runs at x16 by default and falls back to x8 when either M.2_3 or M.2_4 is enabled.

What physical clearance does the 22+2+1+2 stage VRM heatsink impose on CPU cooler height?

The VRM heatsink covers the socket surround, so any air cooler or AIO cold plate must fit within the standard LGA 1851 keep-out zone; verify cooler specifications against the motherboard layout before purchase.

Which BIOS step enables the AI Overclocking profile for the Core Ultra 9 285K after the CPU is seated and power connected?

Enter the UEFI, open the AI Overclocking utility, run the brief stress test, then save and exit — skipping the stress test leaves the profile inactive.

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