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The ASRock B550M Phantom Gaming 4 is a Micro-ATX motherboard for AMD Ryzen 5000, 4000G and 3000 series CPUs on the AM4 socket. It uses the B550 chipset, so it supports PCIe 4.0 on the main graphics slot and the primary M.2 slot, plus AMD Smart Access Memory with a compatible Ryzen CPU and Radeon GPU. An 8-phase power design with 50A chokes feeds the CPU, which is more than most budget B550 boards offer. It suits builders who want PCIe 4.0 and a compact case fit without paying for Wi-Fi, and it gives up features like onboard wireless and a second full-speed M.2 slot that pricier B550 boards include.
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Owners of budget B550 boards like this one generally report stable power delivery and easy setup for mid-range Ryzen chips. Common complaints center on the lack of Wi-Fi and the limited USB and M.2 layout.
The ASRock B550M Phantom Gaming 4 is a desktop motherboard from ASRock's Phantom Gaming line, which is built around gaming-oriented features.
It uses an 8 power phase design with a premium 50A power choke to deliver smooth power to the CPU. The chokes raise saturation current up to three times over traditional chokes, which supports Vcore voltage delivery to the board.
The board supports AMD Smart Access Memory. This widens the data channel so the processor can reach the full graphics memory instead of only a fraction of it, which removes a bottleneck.
