Here are some of the best SSDs and RAMs for laptop and desktop computers with 8GB capacity:

SSDs

• M.2 NVMe: These SSDs are the fastest type of SSD available, and they offer the best performance for gaming and other demanding tasks. Some good M.2 NVMe SSDs for 8GB include the:
  • Crucial P5 Plus 
  • Samsung 980 
  • Western Digital SN750 SE 
• SATA: SATA SSDs are a bit slower than M.2 NVMe SSDs, but they are still much faster than traditional hard drives. Some good SATA SSDs for 8GB include the:
  • Crucial MX500 
  • Samsung 870 QVO 
  • Western Digital Blue SN550

RAM

• DDR4: DDR4 is the latest generation of RAM, and it offers the best performance for most computers. Some good DDR4 RAM kits for 8GB include the:
  • Corsair Vengeance LP
  • G.Skill Ripjaws V 
  • Crucial Ballistix 

Here are some specific recommendations for laptop and desktop computers:

Laptop

• SSD: Crucial P5 Plus 8GB M.2 NVMe 
• RAM: Corsair Vengeance LPX 8GB (1x8GB) DDR4-3200 

Desktop

• SSD: Western Digital SN750 SE 8GB M.2 NVMe 

  RAM: G.Skill Ripjaws V 8GB (2x4GB) DDR4-3200 

These are just a few recommendations, and there are many other great SSDs and RAMs available. It is important to do your research and find the best option for your needs and budget.