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ATX motherboard with silver heatsinks and black PCB, boxed Intel Core Ultra 5 245K CPU beside it

ASUS

ASUS ROG MAXIMUS Z890 APEX + Ultra 5 245K Intel motherboard CPU combo

SKU CH-8HZJ-J89Q7

Z890 ATX board paired with a Core Ultra 5 245K, 22+2+1+2 power stages, DDR5 to 9600 MT/s, WiFi 7, 5G LAN, three PCIe 5.0 M.2 slots and Thunderbolt 4

  • ProcessorIntel Core Ultra Processors (Series 2)
  • ChipsetIntel Z890
  • Form factorATX
  • CPU socketLGA 1851
  • Memory slot count2 × 288pin (DDR5)
  • Max supported RAM128 GB

Motherboard ROG MAXIMUS Z890 APEX

CPU +Ultra 5 245K

  • Ready for AI workloads with Intel Core Ultra 5 245K 3nm processor
  • Robust 22+2+1+2 stage power delivery with 110A and 90A stages
  • DDR5 memory support up to 9600 MT/s on two slots for 128GB max
  • WiFi 7 and 5Gbps LAN plus Bluetooth 5.4 for fast connectivity
  • Three PCIe 5.0 M.2 slots and Thunderbolt 4 ports for high-speed storage

Z890 APEX combo for AI workloads

The board pairs an LGA 1851 socket with the Intel Core Ultra 5 245K processor built on a 3 nm process. Dual-channel DDR5 support reaches 128 GB at speeds beyond 9600 MT/s when overclocked. The 22+2+1+2 phase VRM uses 110 A, 90 A and 80 A stages to feed the 125 W CPU during sustained AI inference and heavy multitasking.

AI tuning and connectivity bundle

ASUS AI Advisor, AI Overclocking, AI Cooling II and AI Networking II automate voltage, fan curves and traffic prioritisation without manual intervention. NPU Boost, DIMM Fit, DIMM Flex and AEMP III simplify memory optimisation. Rear I/O adds two Thunderbolt 4 ports, one 20 Gbps USB-C, four 10 Gbps Type-A, four 5 Gbps Type-A, 5 Gb Ethernet, Wi-Fi 7 and Bluetooth 5.4 plus SupremeFX 7.1 audio.

Three PCIe 5.0 M.2 slots and dual x16

M.2_1 runs at PCIe 5.0 x4 while M.2_2 and M.2_3 share bandwidth with the second x16 slot, dropping it to x8 or x4 when populated. Two additional PCIe 4.0 x4 slots and four SATA 6 Gb/s ports handle secondary storage. The 128 GB memory ceiling and robust VRM give headroom for large language models, but the two DIMM slots limit maximum density per channel.

How it compares

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

Price $909.99
Pricier than about 93% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameASUS
Product lineROG MAXIMUS Z890 APEX+Ultra 5 245K
Model nameROG MAXIMUS Z890 APEX+Ultra 5 245K
Processor
ProcessorIntel Core Ultra Processors (Series 2)
CPU socketLGA 1851
ChipsetIntel Z890
Memory
Memory slot count2 × 288pin (DDR5)
Max supported RAM128 GB
Memory channelsDual Channel
Storage
SATA ports4 x SATA 6Gb/s
M.2 slotsSupport Intel 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 modes)**
M.2_4 slot (Key M), type 2242/2260/2280 (supports PCIe 5.0 x4 modes)**
Intel Z890 Chipset
DIMM.2_1 slot (Key M) via ROG DIMM.2, type 2230/2242/2260/2280/22110 (supports PCIe 4.0 x4 mode)
DIMM.2_2 slot (Key M) via ROG DIMM.2, type 2230/2242/2260/2280/22110 (supports PCIe 4.0 x4 mode)
**M.2_3 & M.2_4 share bandwidth with PCIEX16(
Audio & video
Sound channelsROG SupremeFX 7.1 Surround Sound High Definition Audio CODEC ALC4080*
- Impedance sense for front and rear headphone outputs
- Supports: Jack-detection, Multi-streaming, Front Panel MIC Jack-retasking
- High quality 120 dB SNR stereo playback output and 110 dB SNR recording input
- Supports up to 32-Bit/384 kHz playback on front panel
Audio Features
- SupremeFX Shielding Technology
- Savitech SV3H712 AMP
- Gold-plated audio jacks
- Rear optical S/PDIF out port
- Premium audio capacitors
- Audio cover
* A chassis with an HD audio module in the front panel is required to support 7.1 Su
Connectivity
Maximum network speed5 Gbit/s
Wi-Fi standardWi-Fi 802.11 be
Bluetooth support5.4
Ports & slots
PCIe 5.0 x16 slotsSupport Intel Core Ultra Processors(series 2)*
2 x PCIe 5.0 x16 slots (supports x16 or x8/x8 or x8/x4/x4 modes)**
Rear panel ports2 x Thunderbolt 4 ports (USB Type-C)
1 x USB 20 Gbit/s port (1 x USB Type-C)
4 x USB 10 Gbit/s ports (4 x Type-A)
4 x USB 5 Gbit/s ports (4 x Type-A)
1 x Wi-Fi Module
1 x Realtek 5Gb Ethernet port
2 x Gold-plated audio jacks
1 x Optical S/PDIF out port
1 x BIOS FlashBack button
1 x Clear CMOS button
1 x PS/2 keyboard/mouse combo port
Power
Power connectors1 × 24-pin Main Power connector
2 × 8-pin +12 V Power connector
1 × 8-pin PCIe Power connector
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Compatibility
Windows 11 support(22H2 & later), Windows 10 64-bit (21H2 & later)
More details
BIOS2 × 256 Mb Flash ROM, UEFI AMI BIOS

Other versions of this model

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Questions about this item

Will the CPU cooler need upgrading if I push the Core Ultra 5 245K beyond its 125W base power?

The processor has a 125W base power rating. Sustained loads above that level will require a cooler rated for higher thermal dissipation than the stock solution.

What limits the PCIe 5.0 x16 slots when all three M.2 drives are populated?

Enabling M.2_3 and M.2_4 forces the primary PCIe 5.0 x16 slot to run at x8 and the second at x4, reducing GPU bandwidth.

How hot do the 22+2+1+2 power stages get during all-day AI workloads?

The 110A, 90A and 80A stages are paired with MicroFine alloy chokes and metallic capacitors to manage heat, while AI Cooling II adjusts fan curves automatically.

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