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ASUS

ASUS PRIME X870-P WIFI & Ryzen 9 9900X Combo

SKU CH-2F79-1S3YD

A motherboard and CPU combo with 12 cores, 24 threads, 5.6 GHz boost, DDR5 support to 192 GB, PCIe 5.0 graphics and M.2 slots, Wi-Fi 7, 2.5 Gbps LAN and Bluetooth 5.4

  • ChipsetAMD X870
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardDDR5 4400
  • Maximum Memory Supported192GB
  • Channel SupportedDual Channel
  • ECC SupportedYes
  • 12 cores and 24 threads for heavy multitasking with Ryzen 9 9900X
  • 6 GHz max boost unlocks overclocking headroom on Zen 5 architecture
  • 14+2+1 80A DrMOS power stages deliver stable CPU voltage
  • DDR5 support up to 8000 MT/s overclocked via EXPO profiles
  • Wi-Fi 7 and 2.5Gbps LAN provide fast network throughput

Combo for high-core AI work

This bundle pairs an ASUS PRIME X870-P WIFI motherboard with a Ryzen 9 9900X processor. The CPU delivers 12 cores and 24 threads based on Zen 5 architecture with a 5.6 GHz max boost clock. The board uses the AMD X870 chipset on an 8-layer PCB with 14+2+1 80A DrMOS power stages. It targets builders who need strong multi-threaded performance for AI workloads and content creation.

Suits AI developers and heavy multitaskers

The 64 MB L3 cache and DDR5-5600 support help feed data-hungry applications. Four DDR5 slots accept up to 192 GB of memory at speeds beyond 8000 MT/s when overclocked. Builders who only need moderate core counts or who do not require PCIe 5.0 storage bandwidth can save money with a simpler platform. The combo also omits a CPU cooler, so factor that into the build plan.

Straightforward DIY assembly

A pre-mounted I/O shield, Q-Antenna, PCIe Slot Q-Release and M.2 Q-Latch reduce installation friction. BIOS FlashBack lets you update firmware without a CPU installed, while Q-Dashboard and Q-LED Core simplify post-build diagnostics. The flexible M.2 heatsink must be positioned correctly to avoid blocking the primary PCIe 5.0 x16 slot.

Highlights

  • 12 cores and 24 threads for heavy multitasking with Ryzen 9 9900X
  • 6 GHz max boost unlocks overclocking headroom on Zen 5 architecture
  • 14+2+1 80A DrMOS power stages deliver stable CPU voltage
  • DDR5 support up to 8000 MT/s overclocked via EXPO profiles
  • Wi-Fi 7 and 2.5Gbps LAN provide fast network throughput

Specifications

BrandASUS
ModelPRIME X870-P WIFI+R9 9900X
ChipsetAMD X870
Number of Memory Slots4x288pin (DDR5)
Memory StandardDDR5 4400
Maximum Memory Supported192GB
Channel SupportedDual Channel
ECC SupportedYes
Buffer SupportedUn-buffered
Memory FeatureSupports up to 8000+MT/s(OC) with Ryzen 9000 & 8000 & 7000 Series Processors
ECC and Non-ECC, Un-buffered DIMM*
Dual channel memory architecture
Supports AMD Extended Profiles for Overclocking (EXPO)
ASUS Enhanced Memory Profile (AEMP)
* Non-ECC, un-buffered DDR5 memory supports On-Die ECC function.
PCI Express 5.0 x16AMD Ryzen 9000 & 7000 Series Desktop Processors
1 x PCIe 5.0 x16 slot (supports x16 mode)
PCI Express 4.0 x16AMD Ryzen 8000 Series Desktop Processors
1 x PCIe 4.0 x16 slot (supports x8/x4 mode)
AMD X870 Chipset
3 x PCIe 4.0 x16 slots (support x1 mode)***
*** PCIEX16(G4)_1 shares bandwidth with M.2_2. PCIEX16(G4)_1 will be disabled when M.2_2 runs.
*** PCIEX16(G4)_2 and PCIEX16(G4)_3 share bandwidth with M.2_3. PCIEX16(G4)_2 and PCIEX16(G4)_3 will be disabled when M.2_3 runs.
Serial ATA (SATA)2 x SATA 6Gb/s
M.2AMD Ryzen 9000 & 7000 Series Desktop Processors
M.2_1 slot (Key M), type 2280 (supports PCIe 5.0 x4 mode)
AMD Ryzen 8000 Series Desktop Processors
M.2_1 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)
AMD X870 Chipset
M.2_2 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode)**
M.2_3 slot (Key M), type 2280 (supports PCIe 4.0 x4 mode)***
M.2_4 slot (Key M), type 2280 (supports PCIe 3.0 x2 mode)****
** PCIEX16(G4)_1 shares bandwidth with M.2_2. PCIEX16(G4)_1 will be disabled when M.2_2 runs.
*** PCIEX16(G4)_2 and PCIEX16(G4)_3 share bandwidth with M.2_3. PCIEX16(G4)_2 and
SATA RAID* AMD RAIDXpert2 Technology supports both PCIe RAID 0/1/5/10 and SATA RAID 0/1. RAID 5 Function is only supportted by AMD Ryzen 9000 series CPU.
Audio ChipsetRealtek 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
- Premium audio capacitors
- Dedicated audio PCB layers
* A chassis with an HD audio module in the front panel is required to support 7.1 Surround Sound audio output.
Audio Channels7.1 Channels
Max LAN Speed2.5Gbps
Wireless LANWi-Fi 802.11 be
BluetoothBluetooth 5.4
Back I/O Ports2 x USB4 (40Gbps) ports (2 x USB Type-C)
1 x USB 10Gbps port (1 x Type-A)
3 x USB 5Gbps ports (3 x Type-A)
4 x USB 2.0 ports (4 x Type-A)
1 x HDMI port
1 x Wi-Fi module
1 x Realtek 2.5Gb Ethernet port
3 x Audio jacks
1 x BIOS FlashBack button
Onboard USB1 x USB 10Gbps connector (supports USB Type-C)
1 x USB 5Gbps header supports 2 additional USB 5Gbps ports
2 x USB 2.0 headers support 4 additional USB 2.0 ports
Other ConnectorsFan and Cooling Related
1 x 4-pin CPU Fan header
1 x 4-pin CPU OPT Fan header
1 x 4-pin AIO Pump header
4 x 4-pin Chassis Fan headers
Miscellaneous
3 x Addressable Gen2 headers
1 x Clear CMOS header
1 x COM Port header
1 x Front Panel Audio header (F_AUDIO)
1 x S/PDIF Out header
1 x SPI TPM header (14-1 pin)
1 x 10-1 pin System Panel header
Form FactorATX
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x 24-pin Main Power connector
2 x 8-pin +12V CPU Power connectors
BIOS Feature256 Mb Flash ROM, UEFI AMI BIOS
Windows 11Supported
FeaturesASUS 5X PROTECTION III
- DIGI+ VRM (- Digital power design with DrMOS)
- LANGuard
- Overvoltage protection
- SafeSlot
- Stainless-steel back I/O
ASUS Q-Design
- M.2 Q-Latch
- PCIe Slot Q-Release
- Q-Antenna
- Q-Dashboard
- Q-DIMM
- Q-LED Core
- Q-Slot
ASUS Thermal Solution
- Flexible M.2 heatsink
- VRM heatsink design
ASUS EZ DIY
- BIOS FlashBack button
- BIOS FlashBack LED
- ProCool
- Pre-mounted I/O shield
- SafeSlot
Aura Sync
- Addressable Gen2 headers
Package Contents1 x AMD Ryzen 9 9900X CPU
1 x Shin-Etsu X-23-7921-5 (1.8g)
Cables
2 x SATA 6Gb/s cables
Miscellaneous
1 x ASUS WiFi Q-Antenna
1 x M.2 rubber package
2 x Screw packages for M.2 SSD
Documentation
1 x Quick start guide

Other versions of this model

5 more in the same range

Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will the Ryzen 9 9900X run its 5.6 GHz boost without a separate cooler?

The CPU is sold without a cooler, so a compatible AM5 cooler must be purchased separately to reach the 5.6 GHz boost clock.

Can I install four DDR5 modules and reach 192 GB total capacity?

Yes, the board has four 288-pin slots and supports up to 192 GB of DDR5 memory in dual-channel mode.

Does the motherboard include Wi-Fi 7 and 2.5 Gb Ethernet out of the box?

Yes, the board integrates Wi-Fi 7 (802.11 be), Bluetooth 5.4 and a Realtek 2.5 Gb LAN controller.

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