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ATX motherboard with silver heatsinks and black PCB, Ryzen 9 9900X3D CPU in AM5 socket

ASUS

ASUS ROG STRIX X870E-H GAMING WIFI7 AMD motherboard & Ryzen 9 9900X3D CPU combo

SKU CH-5WRA-AM8HB

An AMD AM5 motherboard with 16+2+1 80A power stages and four M.2 slots paired with a 12-core Ryzen 9 9900X3D CPU featuring 128MB L3 cache

  • CPU socketAM5
  • ChipsetAMD X870E
  • Form factorATX
  • Memory slot count4 × 288pin (DDR5)
  • Supported memorySupports up to 8000+MT/s(OC) with Ryzen
  • Max supported RAM256 GB

Model ROG STRIX X870E-H GAMING WIFI7

CPU +R9 9900X3D

  • Ready for demanding AI workloads with high power and connectivity
  • 16+2+1 power stages rated at 80A each for stable multi-core performance
  • Two PCIe 5.0 and two PCIe 4.0 M.2 slots with substantial cooling
  • On-board WiFi 7 and Realtek 5Gb Ethernet for high-speed networking
  • Ryzen 9 9900X3D with 128MB L3 cache and AMD Radeon graphics

Combo platform for AI workloads

The bundle pairs an AMD Ryzen 9 9900X3D processor with the ROG STRIX X870E-H GAMING WIFI7 motherboard on the AM5 socket. The CPU delivers 12 cores built on TSMC 4nm FinFET Granite Ridge Zen 5 architecture with a 120W TDP and 128MB L3 cache. The board adds 16+2+1 power stages rated for 80A each, dual ProCool II 8-pin connectors and WiFi 7 802.11be networking. Together they target advanced AI PCs and high-end gaming builds.

Upgrade path from older AM5 CPUs

The motherboard supports Ryzen 9000, 8000 and 7000 series desktop processors, so the combo replaces any earlier AM5 chip without a motherboard swap. Moving from a 7000 or 8000 series CPU to the 9900X3D adds the larger 128MB L3 cache and the newer Zen 5 core design. The jump is worth it when workloads benefit from extra cache and the board's 8000+ MT/s DDR5 OC headroom, plus PCIe 5.0 graphics and storage lanes that earlier chips limited to PCIe 4.0.

Practical limits of the X870E platform

The chipset provides one PCIe 5.0 x16 slot and two PCIe 5.0 M.2 slots directly from the CPU, while the second full-size slot and two more M.2 sockets run at PCIe 4.0 speeds. Rear I/O tops out at 5Gbps Ethernet, two USB4 40Gbps Type-C ports and WiFi 7 802.11be. Memory caps at 256GB across four 288-pin DDR5 slots in dual-channel mode with non-ECC support only. These ceilings define the expansion and throughput boundaries for the build.

How it compares

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

Price $1,240.99
Pricier than about 91% of the 1,906 comparable items (median $224.49).

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Specifications

Product
Brand nameASUS
Model nameROG STRIX X870E-H GAMING WIFI7+R9 9900 × 3D
Processor
CPU socketAM5
ChipsetAMD X870E
Memory
Memory slot count4 × 288pin (DDR5)
Supported memorySupports up to 8000+MT/s(OC) with Ryzen
Max supported RAM256 GB
Memory channelsDual Channel
ECC supportNon-ECC
Storage
SATA and RAID supportAMD RAIDXpert2 Technology
Ryzen 9000 Series Processors: RAID 0/1/5/10
Ryzen 8000 Series Processors: RAID 0/1
Ryzen 7000 Series Processors: RAID 0/1/10
Audio & video
Sound channels7.1 Channels
Connectivity
Maximum network speed5 Gbit/s
Ports & slots
Onboard USB headers1 x USB 20 Gbit/s connector (supports USB Type-C)
1 x USB 5 Gbit/s header supports 2 additional USB 5 Gbit/s ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports
Power
Power connectors1 × 24-pin Main Power connector
2 × 8-pin +12 V CPU Power connector
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Compatibility
Windows 11 supportSupported
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 size case and power connectors does the ATX board with 12.0" x 9.6" dimensions require?

The board fits any ATX case measuring at least 12.0 by 9.6 inches and needs one 24-pin main power connector plus two 8-pin +12V CPU power connectors.

Which CPU power cables must be seated before first boot on the 16+2+1 phase VRM?

Both 8-pin +12V CPU power connectors labelled ProCool II must be fully inserted; the board will not post if only one is connected.

When should the thermal pads on the two PCIe 5.0 and two PCIe 4.0 M.2 heatsinks be inspected or replaced?

Check the pads whenever an M.2 drive is removed or after several years of heavy write workloads; replace if they appear compressed or dried out.

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