Transfer speed (bandwidth)

NIC (Network Interface Card) : 1 Gbps / 10 Gbps / 56 Gbps (infiniband)
HDD (Hard Disk Drive) : ~ 1-2 Gbps (150-250 MB/s)
SSD (Solid State Drive) : ~ 4-5 Gbps (450-550 MB/s)
SATA1 : 1.5 Gbps (150 MB/s)
SATA2 : 3.0 Gbps (300 MB/s)
SATA3 : 6.0 Gbps (600 MB/s)
SDRAM (Synchronous Dynamic Random Access Memory) : 66 MT/s, 100 MT/s, 133 MT/s
DDR SDRAM (Double Data Rate SDRAM) : 200-400 MT/s (1.6-3.2 GB/s)
DDR2 SDRAM (Double Data Rate Two SDRAM) : 400-1067 MT/s (3.2-8.5 GB/s)
DDR3 SDRAM (Double Data Rate Three SDRAM) : 800-2133 MT/s (6.4-17.1 GB/s)
DDR4 SDRAM (Double Data Rate Fourth SDRAM) : 1600-3200 MT/s (12.8-25.6 GB/s) (102.4-204.8 Gbps)
Cache memory (by channel, DDR3-1600) : Q 37 GB/s, D 21.2 GB/s, T 19.9 GB/s (theoretical max 51 GB/s)
GDDR5 : 8 Gbps
GDDR5X : 12 Gbps
GDDR6 : 18 Gbps
NVIDIA NVlink : 32-300 GB/s
USB 2.0 : 480 Mbps
USB 3.0 : 5 Gbps
USB 3.1 Gen 1 : 5 Gbps
USB 3.1 Gen 2 : 10 Gbps
USB-C 3.1 Gen 1 : 10 Gbps
USB-C 3.1 Gen 2 : 20 Gbps

1 MB/s (Giga-bits-persecond) = 8 Mbps

1 MT/s (Megatransfer per second) = 8 MB/s

RAID