ASUS PRIME B860M-K Intel motherboard & Ultra 5 245K CPU combo with Shin-Etsu X-23-7868-2D thermal grease
- LGA 1851
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ASUS
Combines an Intel Core Ultra 7 265K processor with a B860 ATX motherboard featuring DDR5 support up to 8666 MT/s, three M.2 slots, Wi-Fi 7, 2.5 Gbps LAN, and 12+2+1 80A DrMOS power stages
model TUF GAMING B860-PLUS WIFI
+CPU +Ultra 7 265K
This combo pairs the ASUS TUF GAMING B860-PLUS WIFI motherboard with the Intel Core Ultra 7 265K processor and Shin-Etsu X-23-7868-2D thermal grease. The board uses the Intel B860 chipset on an ATX form factor with an LGA 1851 socket. It targets builders who want a platform prepared for demanding AI workloads and high-performance computing. The processor operates at a 125W base power with 30MB L3 and 36MB L2 cache.
The included Shin-Etsu X-23-7868-2D compound ensures effective heat transfer between the CPU and your chosen cooler. Motherboard conveniences such as PCIe Slot Q-Release, M.2 Q-Latch, Q-Antenna, Q-Dashboard, Q-LED and BIOS FlashBack simplify assembly and troubleshooting. A pre-mounted I/O shield saves an installation step. These additions reduce build friction without changing the core specifications of the board or processor.
The platform delivers one PCIe 5.0 x16 slot from the CPU and a second PCIe 4.0 x16 slot from the chipset that runs at x4 mode, sharing bandwidth with the PCIe 4.0 x1 slot. Storage options include one PCIe 5.0 M.2 slot and two PCIe 4.0 M.2 slots, all with heatsinks. Networking tops out at 2.5Gbps Ethernet and Wi-Fi 7 (802.11be) with Bluetooth 5.4. Rear USB reaches 20Gbps Type-C with DP Alt mode while front-panel USB offers 10Gbps Type-C.
| Brand | ASUS |
|---|---|
| Model | TUF GAMING B860-PLUS WIFI+Ultra 7 265K |
| Part Number | TUF GAMING B860-PLUS WIFI+Ultra 7 265K |
| CPU Socket Type | LGA 1851 |
| Chipset | Intel B860 |
| Number of Memory Slots | 4x288pin (DDR5) |
| Memory Standard | Up to 8666+MT/s (OC) |
| Maximum Memory Supported | 192GB |
| Channel Supported | Dual Channel |
| Memory Feature | Support up to 8666+ MT/s (OC), Non-ECC, Un-buffered ,Clocked Unbuffered DIMM (CUDIMM) Dual channel memory architecture Supports Intel Extreme Memory Profile (XMP) memory module ASUS Enhanced Memory Profile III(AEMPIII) **Non-ECC, un-buffered DDR5 memory supports On-Die ECC function |
| PCI Express 5.0 x16 | Intel Core Ultra Processors (Series 2) 1 x PCIe 5.0 x16 slot |
| PCI Express 4.0 x16 | Intel B860 Chipset 1 x PCIe 4.0 x16 slot (supports x4 mode)* |
| PCI Express x1 | 1 x PCIe 4.0 x1 slot* * PCIEX16(G4) shares bandwidth with PCIEX1(G4). When PCIEX1(G4) runs at PCIe x1 mode, PCIEX16(G4) will only run at PCIe x2 mode. |
| Serial ATA (SATA) | 4 x SATA 6Gb/s |
| M.2 | Intel Core Ultra Processors(Series 2)* M.2_1 slot (Key M), type 2280 (supports PCIe 5.0 x4 mode) Intel B860 Chipset M.2_2 slot (Key M), type 2280/22110 (supports PCIe 4.0 x4 mode) M.2_3 slot (Key M), type 2242/2260/2280 (supports PCIe 4.0 x4 mode) |
| SATA RAID | * Intel Rapid Storage Technology supports, SATA RAID 0/1/5/10. |
| Audio Channels | Realtek 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 - Rear optical S/PDIF out port - Premium audio capacitors - Dedicated audio PCB layers - Audio cover * Due to limitations in HDA bandwidth, 32-Bit/192 kHz is not supported for 7.1 Surround Sound audio. |
| Max LAN Speed | 2.5Gbps |
| Wireless LAN | Wi-Fi 802.11 be |
| Bluetooth | Bluetooth 5.4 |
| Back I/O Ports | 1 x USB 20Gbps port (1 x USB Type-C with DP Alt mode) 2 x USB 10Gbps ports (2 x USB Type-A) 3 x USB 5Gbps ports (3 x Type-A) 2 x USB 2.0 ports (2 x Type-A) 1 x DisplayPort 1 x HDMI port 1 x Wi-Fi module 1 x Realtek 2.5Gb Ethernet port 5 x Audio jacks 1 x Optical S/PDIF out port 1 x BIOS FlashBack button |
| Onboard USB | 1 x USB 10Gbps connector (supports USB Type-C) 1 x USB 5Gbps header supports 2 additional USB 5Gbps ports 1 x USB 2.0 header supports 2 additional USB 2.0 ports |
| Other Connectors | Fan 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 Gen 2 headers 1 x Clear CMOS header 1 x Chassis Intrusion header 1 x COM Port header 1 x Front Panel Audio header (F_AUDIO) 1 x 10-1 pin Front System Panel header 1 x Thunderbolt (USB4) header |
| BIOS Feature | 256 Mb Flash ROM, UEFI AMI BIOS |
| Software | ASUS Exclusive Software Armoury Crate - Aura Creator - Aura Sync - Fan Xpert 4 - Power Saving ASUS DriverHub ASUS GlideX TUF GAMING CPU-Z Adobe Creative Cloud (Free Trial) DTS Audio Processing Norton 360 for Gamers (60 Days Free Trial) WinRAR (40 Days Free Trial) UEFI BIOS ASUS EZ DIY - ASUS CrashFree BIOS 3 - ASUS EZ Flash - ASUS UEFI BIOS EZ Mode - ASUS MyHotkey |
| Windows 11 | Windows 11 (22H2 & later) |
| Form Factor | ATX |
| Dimensions (W x L) | 12.0" x 9.6" |
| Power Pin | 1 x 24-pin Main Power connector 2 x 8-pin +12V CPU Power connectors |
| Features | ASUS TUF PROTECTION - DIGI+ VRM (- Digital power design with DrMOS) - ESD Guards - TUF 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 (CPU [red], DRAM [yellow], VGA [white], Boot Device [yellow green]) - Q-Slot ASUS Thermal Solution - M.2 heatsink - VRM heatsink design ASUS EZ DIY - BIOS FlashBack™ button - BIOS FlashBack™ LED - CPU Socket lever protector - ProCool - Pre-mounted I/O shield - SafeDIMM Aura Sync - Addressable Gen 2 headers |
| Package Contents | 1 x Intel Ultra 7 265K CPU 1 x Thermal grease: Shin-Etsu X-23-7868-2D Cables 2 x SATA 6Gb/s cables Miscellaneous 1 x ASUS WiFi Q-Antenna 2 x M.2 rubber packages 1 x Screw package for M.2 SSD 1 x TUF GAMING sticker Documentation 1 x Quick start guide |
Other versions of this model
Same family, different memory, cooler or clock — compare before you commit.
The bundle includes Shin-Etsu X-23-7868-2D thermal grease, supplied specifically for the included processor.
The motherboard supports ASUS Enhanced Memory Profile III (AEMP III) which automatically optimises compatible DDR5 modules beyond base JEDEC speeds.
The top M.2_1 slot runs at PCIe 5.0 x4 directly from the CPU, while M.2_2 and M.2_3 run from the chipset, leaving the PCIe 5.0 x16 graphics slot unaffected.
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