Razer blade 15 base 2021 ram July 8, 2019 16 32 64 128 Razer blade 15 base 2021 ram upgrade Razer blade 15 base (2021) Razer blade 15 base gaming laptop Razer blade 15 2021 review Razer blade 15 2019 base Razer blade 15 2022 ram upgrade