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ASUS TX GAMING B650EM WIFI W motherboard with Ryzen 9 9900X CPU in AM5 socket

ASUS

ASUS TX GAMING B650EM WIFI W AMD motherboard with Ryzen 9 9900X CPU

SKU CH-QQXY-E9MGW

A motherboard and CPU combo with 12 cores, 24 threads, 5.6 GHz max boost, 64 MB L3 cache, 12 MB L2 cache, DDR5 memory up to 128 GB and PCIe 5.0 support

  • CPU Socket TypeAM5

model TX GAMING B650EM WIFI W

+CPU +Ryzen 9 9900X

  • 12-core Ryzen 9 9900X delivers 5.6 GHz max boost for demanding workloads
  • DDR5 memory scales to 8400 MT/s overclocked with Ryzen 8000 series processors
  • Dual-channel architecture supports up to 128 GB capacity across two DIMM slots
  • AMD EXPO and ASUS AEMP profiles simplify memory overclocking for stable performance
  • AM5 socket platform enables PCIe 5.0 connectivity on compatible motherboards

Combo foundation

The bundle pairs an ASUS TX GAMING B650EM WIFI W motherboard with a Ryzen 9 9900X processor for Socket AM5 builds. It targets enthusiasts who want a ready matched platform for high core count workloads and gaming. The board provides two DDR5 DIMM slots supporting up to 128GB total capacity. The CPU delivers 12 cores and 24 threads based on Zen 5 architecture.

Memory ceiling

The single specification that decides fit is the board's validated DDR5 overclock ceiling of 8200+ MT/s with Ryzen 9000 series, 8400+ MT/s with Ryzen 8000 series, and 8000+ MT/s with Ryzen 7000 series. Dual channel architecture, EXPO and AEMP profiles are supported for both ECC and non ECC unbuffered modules. Actual speeds depend on the specific CPU and memory kit combination used.

Sustained throughput

Under continuous load the 9900X maintains its 5.6 GHz max boost across 12 cores with 64MB L3 and 12MB L2 cache feeding data. The platform enables PCIe 5.0 connectivity on select motherboard lanes for high bandwidth peripherals. No cooler is included so thermal solution choice directly determines how long boost clocks hold during extended rendering or compile sessions.

Highlights

  • 12-core Ryzen 9 9900X delivers 5.6 GHz max boost for demanding workloads
  • DDR5 memory scales to 8400 MT/s overclocked with Ryzen 8000 series processors
  • Dual-channel architecture supports up to 128 GB capacity across two DIMM slots
  • AMD EXPO and ASUS AEMP profiles simplify memory overclocking for stable performance
  • AM5 socket platform enables PCIe 5.0 connectivity on compatible motherboards

Specifications

BrandASUS
ModelTX GAMING B650EM WIFI W+R9 9900X
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

Will this board fit a standard ATX case and what memory type do I need?

The motherboard uses the AM5 socket and has two DDR5 DIMM slots supporting up to 128GB; check your case manual for ATX clearance.

Does the Ryzen 9 9900X come with a cooler in this bundle?

The processor is sold without a cooler, so you must supply an AM5-compatible CPU cooler separately.

What memory speeds can I expect with the included 9900X?

With the Ryzen 9000 series CPU the board supports DDR5 up to 8200+ MT/s when overclocked, while the CPU itself is rated for DDR5-5600.

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