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ASUS

ASUS PRIME B850-PLUS Motherboard & AMD Ryzen 9 9950X3D CPU Combo

SKU CH-ANTS-RFZ6G

A motherboard and CPU combo pairing a 12+2 phase power design B850 board with triple M.2 slots and 2.5Gb Ethernet with a 16-core Ryzen 9 9950X3D featuring 128MB L3 cache and Radeon graphics

  • CPU Socket TypeAM5
  • 12+2 phase power design delivers stable, efficient voltage for Ryzen 9000/8000/7000 CPUs
  • ASUS Enhanced Memory Profile unlocks higher DDR5 speeds and tighter timings on non-EXPO kits
  • One PCIe 5.0 x4 M.2 slot plus two PCIe 4.0 x4 slots provide ultra-fast storage options
  • 5Gb Ethernet with LANGuard gives faster, more reliable wired networking
  • Pre-mounted I/O shield, Fan Xpert 2+ and Aura Sync RGB headers simplify building and customisation

Motherboard & CPU Combo

The ASUS PRIME B850-PLUS motherboard paired with the AMD Ryzen 9 9950X3D processor forms a complete AM5 platform for builders who want a ready-to-install foundation. It targets enthusiasts and professionals seeking high core counts and large cache in a single package.

12+2 Phase Power Delivery

A 12+2 phase design with Digi+ VRM supplies stable power to the 170W TDP Ryzen 9 9950X3D and compatible 7000, 8000, 9000 series CPUs. This specification determines whether the board can sustain heavy multi-threaded workloads without throttling.

Triple M.2 Storage Headroom

One PCIe 5.0 x4 slot and two PCIe 4.0 x4 slots provide high-speed capacity for operating systems, applications and large project files. The 5.0 slot reaches 128 Gbps bandwidth while the 4.0 slots handle additional drives before expansion limits are reached.

Points forts

  • 12+2 phase power design delivers stable, efficient voltage for Ryzen 9000/8000/7000 CPUs
  • ASUS Enhanced Memory Profile unlocks higher DDR5 speeds and tighter timings on non-EXPO kits
  • One PCIe 5.0 x4 M.2 slot plus two PCIe 4.0 x4 slots provide ultra-fast storage options
  • 5Gb Ethernet with LANGuard gives faster, more reliable wired networking
  • Pre-mounted I/O shield, Fan Xpert 2+ and Aura Sync RGB headers simplify building and customisation

Caractéristiques

BrandASUS
ModelPRIME B850-PLUS+R9 9950X3D
CPU Socket TypeAM5

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5 de plus dans cette gamme

Même famille, mémoire, ventirad ou fréquence différents — comparez avant de vous décider.

Questions sur cet article

How does the 128 MB L3 cache on the Ryzen 9 9950X3D behave once the CPU is installed in a working system?

The large L3 cache sits directly on the processor die and feeds the 16 cores with low-latency data, which reduces trips to system memory and improves throughput in cache-sensitive workloads such as gaming and compilation.

What does the PCIe 5.0 x4 M.2 slot on the PRIME B850-PLUS actually cap at in everyday use?

The slot is wired for four lanes of PCIe 5.0, giving a theoretical ceiling of 128 Gbps; real-world throughput will be limited by the specific drive controller and thermal throttling rather than the interface itself.

What physical clearance does the 12+2 phase VRM heatsink on this ATX board need inside a standard case?

The board follows the ATX form factor, so any case that accepts ATX motherboards will accommodate the VRM heatsink; the pre-mounted I/O shield also simplifies alignment during installation.

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