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ATX motherboard in dark finish with four DDR5 slots and two large M.2 heatsinks

ASRock

ASRock B860 Pro RS Intel motherboard

SKU CH-RVAM-R0AAF MPN B860 Pro RS

ATX board for Intel Core Ultra Series 2 with four DDR5 slots up to 8666 MT/s, PCIe 5.0 x16, two M.2 sockets, four SATA ports, 7.1 audio and Dragon RTL8125BG LAN

  • ProcessorIntel Core Ultra Processors (Series 2)
  • ChipsetIntel B860
  • Form factorATX
  • CPU socketLGA 1851
  • Memory slot count4 × 288pin (DDR5)
  • Supported memoryUp to DDR5 8666+(OC)

Model B860 Pro RS

  • Ready for Intel Core Ultra Series 2 processors on LGA 1851
  • 4 DDR5 slots reach 8666 MT/s overclocked with XMP 3.0
  • 256 GB maximum memory capacity across four channels
  • PCIe 5.0 x16 slot plus PCIe 4.0 x4 slot for graphics and add-in cards
  • Blazing M.2 at 128 Gb/s plus two Hyper M.2 at 64 Gb/s each

Socket LGA 1851 et chipset B860

Cette carte mère ATX accueille les processeurs Intel Core Ultra de série 2 via un socket LGA 1851. Le chipset B860 gère quatre emplacements DDR5 jusqu'à 256 Go en dual channel avec profils XMP 3.0 et prise en charge des CUDIMM. Un slot PCIe 5.0 x16 et un second slot PCIe 4.0 x4 assurent l'extension graphique et additionnelle.

Alimentation 10+1+1+1+1 Dr.MOS

L'étage d'alimentation utilise une conception 10+1+1+1+1 phases avec Dr.MOS pour le VCore, le GT et le SA. Quatre connecteurs SATA 6 Gbit/s et trois sockets M.2 (un Gen5 x4 128 Gbit/s, deux Gen4 x4 64 Gbit/s) complètent le stockage. Le contrôleur Dragon RTL8125BG assure le réseau 2,5 Gbit/s et le codec Realtek ALC897 délivre un son 7.1 canaux.

Accessoires fournis et logiciels

Le bundle comprend un cache I/O, des câbles SATA, des vis pour M.2 et la documentation. L'utilitaire ASRock Polychrome SYNC pilote l'éclairage ARGB et RGB adressable. Le BIOS intègre Intel VMD pour la gestion NVMe et la mise à jour instantanée Instant Flash sans clé USB.

How it compares

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

Price $117.99
Pricier than about 60% of the 2,965 comparable items (median $97.99).

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Specifications

Product
Brand nameASRock
Model nameB860 Pro RS
Part numberB860 Pro RS
Processor
ProcessorIntel Core Ultra Processors (Series 2)
CPU socketLGA 1851
ChipsetIntel B860
Memory
Memory slot count4 × 288pin (DDR5)
Supported memoryUp to DDR5 8666+(OC)
Max supported RAM256 GB
Memory channelsDual Channel
Memory profilesIntel XMP 3.0
Storage
SATA ports4 x SATA 6Gb/s
M.2 slotsCPU:
- 1 x Blazing M.2 Socket (M2_1, Key M), supports type 2280 PCIe Gen5 × 4 (128 Gb/s) mode*
Chipset:
- 1 x Hyper M.2 Socket (M2_2, Key M), supports type 2230/2242/2260/2280 PCIe Gen4 × 4 (64 Gb/s) mode*
- 1 x Hyper M.2 Socket (M2_3, Key M), supports type 2280 PCIe Gen4 × 4 (64 Gb/s) mode*
* Supports Intel Volume Management Device (VMD)
Supports NVMe SSD as boot disks
SATA and RAID supportSupports RAID 0, RAID 1, RAID 5 and RAID 10 for SATA storage devices
Audio & video
Audio chipRealtek ALC897
Sound channels7.1 CH HD Audio with Content Protection
Connectivity
Ethernet controllerDragon RTL8125BG
Maximum network speed2.5 Gbit/s
Ports & slots
PCIe 5.0 x16 slotsCPU:
- 1 x PCIe 5.0 x16 Slot (PCIE1), supports x16 mode*
PCIe 4.0 x16 slotsChipset:
- 1 x PCIe 4.0 x16 Slot (PCIE2), supports x4 mode*
Rear panel ports2 x Antenna Mounting Points
1 x HDMI Port
1 x DisplayPort 1.4
1 x USB 3.2 Gen2 × 2 Type-C Port (20 Gb/s)
6 x USB 3.2 Gen1 Ports
2 x USB 2.0 Ports
1 x RJ-45 LAN Port
1 x BIOS Flashback Button
HD Audio Jacks: Line in / Front Speaker / Microphone
Onboard USB headers2 x USB 2.0 Headers (Support 4 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 Gen1 Header
Power
Power connectors1 × 24 pin ATX Power Connector
2 × 8 pin 12 V Power Connectors (Hi-Density Power Connector)
Size & build
Form factorATX
Width and length12.0 in × 9.6 in
Shipping weight1.72 kg
Package size356 × 279 × 76 mm
Compatibility
Windows 11 support64-bit
In the box
In the box2 x SATA Data Cables
2 x ASRock WiFi 2.4/5/6 GHz Antennas
More details
BIOS256Mb AMI UEFI Legal BIOS with GUI support

Other versions of this model

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Questions about this item

How do I install the CPU into the LGA 1851 socket without bending pins?

Lift the socket lever, align the processor triangle with the socket corner, place the CPU gently without pressure, lower the frame and lock the lever; the common mistake is forcing the chip before the frame is fully closed.

What upkeep does the 10+1+1+1+1 Dr.MOS power phase design require over time?

Dust the VRM heatsinks and chassis fans every few months; the Dr.MOS stages have no user-serviceable parts, so no thermal-pad replacement or firmware action is needed unless temperatures rise unexpectedly.

Which limit appears first when the Blazing M.2 socket runs at PCIe Gen5x4 128 Gb/s under sustained writes?

The SSD controller typically hits its thermal throttle point before the motherboard lane saturates; adding a heatsink to the M.2_1 drive keeps sequential throughput stable.

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