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ASUS PRIME B850-PLUS ATX motherboard with Ryzen 7 9850X3D CPU in AM5 socket

ASUS

ASUS PRIME B850-PLUS & Ryzen 7 9850X3D AMD motherboard combo

SKU CH-A233-HF7QM

A motherboard and CPU combo with 12+2 phase power, triple M.2 slots up to 128 Gbps, 2.5 Gb Ethernet, DDR5 support and an 8-core 16-thread Ryzen 7 9850X3D reaching 5.6 GHz boost with 96 MB L3 cache

  • CPU Socket TypeAM5
  • Ready-to-build combo pairs a 12+2 phase VRM motherboard with an 8-core 16-thread Ryzen CPU
  • Stable power delivery from premium Digi+ VRM components supports Ryzen 9000 8000 7000 series processors
  • AEMP unlocks higher DDR5 speeds and tighter timings even on non-EXPO memory kits
  • One PCIe 5.0 x4 M.2 slot at 128 Gbps plus two PCIe 4.0 x4 slots for fast storage
  • 5 Gb Ethernet with LANGuard gives faster more reliable wired networking

Combo for AM5 builders

This bundle pairs the ASUS PRIME B850-PLUS motherboard with the AMD Ryzen 7 9850X3D processor. It targets enthusiasts building a new AM5 platform who want the 96 MB L3 cache advantage for gaming workloads. The board supplies a 12+2 phase VRM design and three M.2 slots, one running at PCIe 5.0 x4. The CPU delivers 8 cores, 16 threads and a 5.6 GHz max boost clock.

Thermals, noise and power

The motherboard uses premium components and Digi+ VRM circuitry to keep power delivery stable and efficient for Ryzen 9000, 8000 and 7000 series CPUs. Fan Xpert 2+ provides software fan curves so system noise can be tuned to the cooling hardware installed. The processor ships without a cooler, leaving thermal performance and acoustic profile entirely dependent on the aftermarket solution chosen.

Bundled software and accessories

A pre-mounted I/O shield simplifies case installation. ASUS Enhanced Memory Profile (AEMP) raises DDR5 speeds and tightens timings even on non-EXPO kits. Aura Sync with Addressable Gen 2 headers enables RGB coordination across compatible devices. LANGuard protects the 2.5 Gb Ethernet port. Rear I/O includes USB 10 Gbps Type-A and Type-C plus DisplayPort output.

商品特色

  • Ready-to-build combo pairs a 12+2 phase VRM motherboard with an 8-core 16-thread Ryzen CPU
  • Stable power delivery from premium Digi+ VRM components supports Ryzen 9000 8000 7000 series processors
  • AEMP unlocks higher DDR5 speeds and tighter timings even on non-EXPO memory kits
  • One PCIe 5.0 x4 M.2 slot at 128 Gbps plus two PCIe 4.0 x4 slots for fast storage
  • 5 Gb Ethernet with LANGuard gives faster more reliable wired networking

商品規格

BrandASUS
ModelPRIME B850-PLUS+R7 9850X3D
CPU Socket TypeAM5

商品問答

How is the pre-mounted I/O shield installed and what step do people often miss?

The shield is already attached to the board so you skip the separate fitting step; the common miss is forgetting to press the board firmly into the rear cut-out until every port clicks into the shield openings.

What maintenance will the CPU cooler need later?

The processor ships without a cooler, so you must supply your own and then periodically clean its heatsink fins and replace the thermal paste every couple of years to keep temperatures in check.

What limit appears first during sustained heavy loads?

The 12+2 phase VRM and Fan Xpert 2+ cooling headers set the practical ceiling; if airflow is insufficient the power delivery will throttle before the 5.6 GHz boost can be maintained.

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