ASUS is an
AMD Technology Partner and an
NVIDIA Authorized Board Partner.
Only ASUS, MSI, and Gigabyte make both AMD and NVIDIA GPU cards.
About a dozen others - including Sapphire, PowerColor, Club3D, XFX, Diamond, HIS - only make AMD GPU cards.
About a dozen others - including EVGA, PNY, ZOTAC, and Galax - only make NVIDIA GPU cards.
ASUS's best GPU cards (typically ROG Matrix Platinums) are always among the best GPU cards, their biggest selling points are their excellent reputation for robustly-overkill engineering/reliability and overall good response to overclocking. The most magnificent factory-overclocked cards are rarely ASUS products, they can rarely push even faster overclocks, and they sometimes have a reputation for being fragile, finicky, cantankerous things which burn bright but also burn out quickly and often.
"All opinions are not equal. Some are a very great deal more robust, sophisticated and well supported in logic and argument than others." - Douglas Adams
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