We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
ASUS PRIME B850-PLUS motherboard and Ryzen 9 9950X3D CPU combo, ATX board with silver heatsinks and pre-mounted I/O shield

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

Motherboard PRIME B850-PLUS

CPU + R9 9950X3D

  • 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.

Highlights

  • 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

Specifications

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

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

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.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.