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ATX motherboard, black PCB with silver heatsinks and RS branding

ASRock

ASRock X870 Pro RS AMD motherboard

SKU CH-R17A-EFQWE MPN X870 Pro RS

AM5 ATX board for Ryzen 7000, 8000 and 9000 CPUs with 14+2+1 80A phases, DDR5 to 8000+, PCIe 5.0 x16, Blazing M.2 Gen5, USB4 Type-C, HDMI, 7.1 audio and LAN

  • CPU Socket TypeAM5
  • CPU TypeRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
  • ChipsetAMD X870
  • Number of Memory Slots4x288pin (DDR5)
  • Memory StandardDDR5 8000+ (OC)
  • Maximum Memory Supported256GB

Option X870 PRO RS

Les versions barrées existent, mais ne sont pas disponibles ici.

Style White

  • Supports Ryzen 7000, 8000 and 9000 series CPUs
  • 14+2+1 power phases with 80A Dr.MOS for stable delivery
  • Four DDR5 slots up to 8000+ OC, 256GB max capacity
  • PCIe 5.0 x16 and Blazing M.2 Gen5x4 128 Gb/s speed
  • Dual USB4 Type-C, 7.1 audio with Realtek ALC1220

Socket and processor support

The board uses the AM5 socket and accepts Ryzen 7000, 8000 and 9000 series processors. It is built around the AMD X870 chipset and targets builders who want a full-size ATX platform for current and upcoming CPUs.

Primary expansion slot

One PCIe 5.0 x16 slot runs at Gen5 x16 with 9000 and 7000 series chips, but drops to Gen4 x8 or x4 with 8000 series parts. A second PCIe 4.0 x16 slot operates at x4 and is disabled when the M2_2 drive is populated.

Installation notes

Standard ATX mounting applies with four DDR5 DIMM slots supporting up to 256 GB. The 14+2+1 phase VRM uses 80 A Dr.MOS and 1000 uF capacitors. Builders should check CPU cooler clearance near the power heatsinks and verify M.2 slot selection to keep the second PCIe slot active.

Points forts

  • Supports Ryzen 7000, 8000 and 9000 series CPUs
  • 14+2+1 power phases with 80A Dr.MOS for stable delivery
  • Four DDR5 slots up to 8000+ OC, 256GB max capacity
  • PCIe 5.0 x16 and Blazing M.2 Gen5x4 128 Gb/s speed
  • Dual USB4 Type-C, 7.1 audio with Realtek ALC1220

Caractéristiques

BrandASRock
ModelX870 PRO RS
CPU Socket TypeAM5
CPU TypeRyzen 7000 Series / Ryzen 8000 Series / Ryzen 9000 Series
ChipsetAMD X870
Number of Memory Slots4x288pin (DDR5)
Memory StandardDDR5 8000+ (OC)
Maximum Memory Supported256GB
Channel SupportedDual Channel
Memory Performance ProfileAMD EXPO / Intel XMP 3.0
ECC SupportedYes
Buffer SupportedUn-buffered
PCI Express 5.0 x161 x PCIe 5.0 x16 Slot (PCIE1), supports x16 mode*
PCI Express 4.0 x161 x PCIe 4.0 x16 Slot (PCIE2), supports x4 mode*
Other Slots* PCIE1 will run at Gen5x16 with 9000 and 7000 series processors, Gen4x8 with 8000 (Phoenix 1) series processors and Gen4x4 with 8000 (Phoenix 2) series processors.
* If M2_2 is occupied, PCIE2 will be disabled.
* Supports NVMe SSD as boot disks
- Supports AMD CrossFire
- 15µ Gold Contact in VGA PCIe Slot (PCIE1)
Serial ATA (SATA)4 x SATA 6Gb/s
M.2CPU:
- 1 x Blazing M.2 Socket (M2_1, Key M), supports type 2280 PCIe Gen5x4 (128 Gb/s) mode*
Chipset:
- 1 x Hyper M.2 Socket (M2_2, Key M), supports type 2230/2242/2260/2280 PCIe Gen4x4 (64 Gb/s) mode*
- 1 x Ultra M.2 Socket (M2_3, Key M), supports type 2280 SATA3 6.0 Gb/s & PCIe Gen3x4 (32 Gb/s) modes*
* Supports NVMe SSD as boot disks
* M2_1 is the first priority for M.2 installation.
* M2_1 will run at Gen5x4 with 9000 and 7000 series processors and Gen4x4 with 8000 (Phoenix 1 and Phoenix 2) series processors.
* If M2_2 is occupied, PCIE2 will be disabled.
* If SATA3_1 or SATA3_2
SATA RAIDSupports RAID 0 and RAID 1 for SATA storage devices
Additional RAID ControllerSupports RAID 0, RAID 1 and RAID 10 for M.2 NVMe storage devices*
* Requires additional M.2 NVMe expansion cards to support RAID 10
Audio ChipsetRealtek ALC1220
Audio Channels7.1 Channels
LAN ChipsetDragon RTL8125BG
Max LAN Speed2.5Gbps
Back I/O Ports2 x Antenna Mounting Points
1 x HDMI Port
1 x Optical SPDIF Out Port
2 x USB4 Type-C Ports (40 Gb/s)*
4 x USB 3.2 Gen1 Type-A Ports
6 x USB 2.0 Ports
1 x RJ-45 LAN Port
1 x BIOS Flashback Button
1 x Line Out Jack (Gold Audio Jack)
1 x Microphone Input Jack (Gold Audio Jack)
* Supports USB PD 3.0 up to 5V@3A (15W) charging
Onboard USB2 x USB 2.0 Headers (Support 3 USB 2.0 ports)
1 x USB 3.2 Gen1 Header (Supports 2 USB 3.2 Gen1 ports)
1 x Front Panel Type C USB 3.2 Gen2x2 Header (20 Gb/s)
Other Connectors1 x Thermistor Cable Header
1 x Power LED and Speaker Header
1 x RGB LED Header*
3 x Addressable LED Headers**
2 x CPU Fan Connectors (4-pin) (Smart Fan Speed Control)***
4 x Chassis Fan Connectors (4-pin) (Smart Fan Speed Control)***
1 x AIO Pump Fan Connector (4-pin) (Smart Fan Speed Control)***
1 x Front Panel Audio Connector
* Supports in total up to 12V/3A, 36W LED Strip
** Support in total up to 5V/3A, 15W LED Strip
*** CPU_FAN1 supports the fan power up to 1A (12W).
*** CPU_FAN2, CHA_FAN1~4 and AIO_PUMP support the fan power up to 3A (36W).
*** CPU_FAN2, CHA_FAN1~4 and AIO_PUM
Form FactorATX
Dimensions (W x L)12.0" x 9.6"
Power Pin1 x 24 pin ATX Power Connector
2 x 8 pin 12V Power Connectors (Hi-Density Power Connector)
BIOS Feature256Mb AMI UEFI Legal BIOS with GUI support
SoftwareSoftware
- ASRock Motherboard Utility (A-Tuning)
- ASRock Dragon 2.5G LAN Software
- ASRock Polychrome SYNC
* These utilities can be downloaded from ASRock Live Update & APP Shop.
UEFI
- ASRock EZ Mode
- ASRock Full HD UEFI
- ASRock Auto Driver Installer
- ASRock Instant Flash
Windows 11Windows 10 64-bit / 11 64-bit
FeaturesSuperb Productivity
- PCIe Gen5 (Graphics, M.2)
- Dual Channel DDR5
- USB4 Type-C Ports (40 Gb/s)
Rock-Solid Durability
- 14+2+1 Power Phase, 80A Dr.MOS for VCore+SOC+MISC with Enlarged
Heatsink Armor
- Flexible Integrated I/O Shield
Ultrafast Connectivity
- 2.5G LAN
EZ Update
- BIOS Flashback Button
- ASRock Auto Driver Installer
EZ Troubleshooter
- ASRock Post Status Checker
Package Contents2 x SATA Data Cables
1 x Screw for M.2 Socket
Poids d’expédition2.00 kg
Dimensions du colis356 × 279 × 76 mm

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Questions sur cet article

What does the 14+2+1 phase power design with 80A Dr.MOS mean for a Ryzen 9000 series CPU in daily use?

The 14+2+1 phase layout with 80A Dr.MOS delivers stable current to the CPU VCore and SOC rails, reducing voltage ripple and keeping temperatures lower during heavy workloads or overclocking.

How does the PCIe 5.0 x16 slot behave when a Ryzen 8000 series processor is installed?

With Ryzen 8000 series CPUs the primary PCIe 5.0 x16 slot runs at Gen4x8 or Gen4x4 depending on the specific processor variant, not at the full Gen5x16 speed.

What clearance and mounting points does the ATX board need inside a case?

The board follows the standard ATX form factor with 288-pin DDR5 slots, four SATA 6Gb/s ports, three M.2 sockets (2230, 2242, 2260, 2280) and rear I/O including two USB4 Type-C, one HDMI and 7.1 channel audio jacks.

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