Lenovo thinkbook 14 amd ryzen 7 7840h July 8, 2019 16 32 64 128 Lenovo thinkbook 14+ amd ryzen 7 7840h Lenovo thinkbook 14 ryzen Thinkbook ryzen 7 Lenovo thinkbook 13s g4 arb amd ryzen 7 6800u Lenovo thinkbook 15 g2 ryzen 7 4700u
