Slower Initial Boot Times (Memory Training): AM5 motherboards, including this ASRock model, typically experience very long boot-up times (often 30 to 45 seconds of a blank screen) during the first few startups or whenever memory settings are changed. A BIOS update and enabling "Memory Context Restore" speeds this up later.
DDR5 Stability at Ultra-High Speeds: Even though the board is rated for 8000+ MT/s, achieving stable operations above 6400 MT/s depends heavily on the silicon quality of your specific processor's internal memory controller. Running four sticks of RAM simultaneously instead of two will drastically cut your maximum stable speed down, sometimes as low as 3600 to 4800 MT/s.
PCIe Bandwidth Sharing Limitations: Because the X870 platform allocates a fixed number of lane tracks from the CPU, using the primary PCIe Gen 5 M.2 solid-state drive slot alongside heavy USB4 usage or multiple expansion cards can occasionally force your primary graphics card slot to drop from its maximum x16 width down to x8 width. Also, the board implements restrictive lane-sharing rule. Its third M.2 slot drops to a slower PCIe Gen 3 speed and completely deactivates if certain SATA ports are heavily utilized
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ASRock X870 PRO RS WiFi AM5 $160 at Newegg
$160
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