SN770

It depends on how it was installed. Depending on the adapter, you might have to modify the original backplate a little. If you used a double-sided SSD, there might have been too much pressure on the chips, damaging the BGA solder joint. Furthermore, the adapter might have come loose, or, as mentione

You're paying extra for RAM and SSD. You should buy 32 gigs of DDR5-6000 CL30 RAM for ~$110 and a 1TB PCIe 4.0 SSD (like the WD Black SN770 or similar) for ~$70. You should also change the PSU to a better quality power supply that has 750W or 850W capacity like the Corsair RMx or Seasonic Focus prod

Aqui, eu olhei melhor teu setup e faria algumas mudanças. Um amigo meu me veio com o mesmo questionamento e teto de gasto, vou lhe mandar e você pode usar como base. Peça Processador Modelo Ryzen 5 7600 Motivo AM5, DDR5, ótimo desempenho por núcleo e suficiente para segurar GPU forte em 1440p sem ga