Hardkernel released their first Samsung Exynos 5422 octa-core board in July 2014 with ODROID-XU3, which at the time was really a powerful board, but also
Review of Ubuntu 18.04 on ODROID-XU4Q Development Board - CNX Software
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Review of Ubuntu 18.04 on ODROID-XU4Q Development Board - CNX Software
ODROID-XU4 — ameriDroid
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RockPro64 RK3399 Board Linux Review with Ubuntu 18.04 + LXDE - CNX Software
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