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ATX motherboard with CPU, silver heatsinks and ARGB lighting

Sapphire Tech

Sapphire Tech NITRO+ X870EA PhantomLink AMD motherboard + Ryzen 9 9900X CPU combo

SKU CH-R8JX-K2DD4

AM5 motherboard with 16+2+1 90A power delivery and PhantomLink back-connect paired with a 12-core 24-thread Ryzen 9 9900X reaching 5.6 GHz boost, plus WiFi 7, 5G LAN.

  • CPU Socket TypeAM5
  • ChipsetAMD X870E

CPU + R9 9900X

  • 12-core 24-thread Zen5 CPU hits 5.6 GHz boost for 2K/4K gaming and heavy workloads
  • 16+2+1 90A power delivery with full-coverage heatsinks keeps Ryzen 9 9900X stable under sustained load
  • PhantomLink back-connect interface enables reverse-insert graphics cards for cleaner cables and better airflow
  • WiFi 7, 5G LAN, dual PCIe 5.0 M.2 and dual USB4 40G ports deliver near-zero latency and fast transfers
  • AM5 platform supports Ryzen 7000/8000/9000 series with DDR5 8400+ MT/s overclocking for long-term upgrades

NITRO+ X870EA PhantomLink combo

The Sapphire NITRO+ X870EA PhantomLink motherboard is paired with a Ryzen 9 9900X 12-core 24-thread Zen5 CPU. The combination targets enthusiasts who want flagship AM5 performance for 2K and 4K gaming as well as heavy content-creation workloads.

16+2+1 90A power and DDR5 8400 headroom

A 16+2+1 90A power delivery system with full-coverage quick-release heatsinks keeps the 5.6 GHz max boost CPU stable under sustained load. Memory overclocking is validated to 8400+ MT/s, giving headroom for high-speed DDR5 kits while the board runs out of official support at the CPU's native 5600 MT/s rating.

PhantomLink back-connect and dual PCIe 5.0 M.2

The exclusive PhantomLink interface enables reverse-insert graphics cards for cleaner cable routing and improved chassis airflow. Dual PCIe 5.0 M.2 slots provide the fastest available storage interface on the platform, while dual USB4 40G ports and WiFi 7 plus 5G wired networking define the connectivity ceiling.

Highlights

  • 12-core 24-thread Zen5 CPU hits 5.6 GHz boost for 2K/4K gaming and heavy workloads
  • 16+2+1 90A power delivery with full-coverage heatsinks keeps Ryzen 9 9900X stable under sustained load
  • PhantomLink back-connect interface enables reverse-insert graphics cards for cleaner cables and better airflow
  • WiFi 7, 5G LAN, dual PCIe 5.0 M.2 and dual USB4 40G ports deliver near-zero latency and fast transfers
  • AM5 platform supports Ryzen 7000/8000/9000 series with DDR5 8400+ MT/s overclocking for long-term upgrades

Specifications

BrandSAPPHIRE
ModelNITRO+ X870EA PhantomLink+(R9 9900X)
CPU Socket TypeAM5
ChipsetAMD X870E

Other versions of this model

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Same family, different memory, cooler or clock — compare before you commit.

Questions about this item

Will my existing AM5 DDR5 memory kit run at its rated speed with the Ryzen 9 9900X and this X870E board?

The board supports DDR5 8400+ MT/s overclocking while the CPU natively supports DDR5-5600; your kit will run at its XMP/EXPO profile if it is within that range.

How can I confirm the PhantomLink back-connect interface is functioning after I install a graphics card?

The motherboard includes an onboard display and quick control buttons that show real-time POST codes and temperatures, letting you verify the link is active.

Does the combo package include the WiFi 7 and Bluetooth 5 antennas, or must I buy them separately?

The motherboard ships with the external antenna required for WiFi 7 and Bluetooth 5 connectivity; no separate antenna purchase is needed.

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