Data Rates per Standard ----------------------- 2G 50 Kbps => 0.006 MB/s 3G [orig] 200 Kbps => 0.2 MB/s 2G EDGE 250 Kbps => 0.25 MB/s 3.75G 14 Mbps => 0.2 MB/s BT2+EDR@ 3 Mbps => 0.3 MB/s 3G 4 Mbps => 0.5 MB/s [T-mobile is fastest] 4G 8 Mbps => 1.0 MB/s [T-mobile is fastest] DVD-R 1x 10 Mbps => 1.3 MB/s [10.56 Mbps => 1.32 MB/s] USB 1 12 Mbps => 1.5 MB/s [Full Speed] ISP FiOS 20 Mbps => 2.5 MB/s BT3+HS 24 Mbps => 3.0 MB/s BT4 LE 24 Mbps => 3.0 MB/s ISP Xfinity 28 Mbps => 3.5 MB/s .11 g 54 Mbps => 7.0 MB/s ["65Mbps"; Moto G LTE @ WiFi Router] Fast Eth 100 Mbps => 12 MB/s 4G LTE 100 Mbps => 12 MB/s [4G LTE Internet; 10-30 Mbps is typical/good] WiMAX 100 Mbps => 12 MB/s [144Mbps @ AC1200 adapter @ USB2] DVD-R 24x 253 Mbps => 32 MB/s [253.44 Mbps => 31.68 MB/s] .11 n 300 Mbps => 37 MB/s 2.4 GHz .11 ac 433 Mbps => 54 MB/s 5.0 GHz [per ch [80 MHz], per ant] [.11ac == WiFi] USB 2 480 Mbps => 60 MB/s 35 MB/s [280 Mpbs] effective .11 AC600 600 Mbps => 73 MB/s 54+19 MB/s [433+150 Mbps] [5.0/2.4 GHz] Gb Eth 1000 Mbps => 125 MB/s 90 MB/s effective per LAN_SpeedTest .11 AC1200 1200 Mbps => 150 MB/s 108+37 MB/s [ 867+300 Mbps] [5.0 / 2.4 GHz] .11 AC1750 1750 Mbps => 220 MB/s 162+56 MB/s [1300+450 Mbps] [5.0 / 2.4 GHz] .11 AC1900 1900 Mbps => 237 MB/s 162+75 MB/s [1300+600 Mbps] [5.0 / 2.4 GHz] SATA 2 3 Gbps => 375 MB/s 300 MB/s [2.4 Gpbs] effective[8b/10b] USB 3 5 Gbps => 625 MB/s 500 MB/s [4 Gbps] effective[8b/10b] [3m max] SATA 3 6 Gbps => 750 MB/s 600 MB/s effective[8b/10b] (.11ac target) USB 3.1 10 Gbps => 1.25 GB/s Thunderbolt 1 10 Gbps => 1.25 GB/s SATA Express 10 Gbps => 1.25 GB/s 2xSATA+PCIe connector [bulky & hideous] Thunderbolt 2 20 Gbps => 2.5 GB/s 2 GB/s [16 Gbps] effective[8b/10b] PCIe 3.0 x16 256 Gbps => 32 GB/s 2010 (full-duplex; TX/RX rates are half that) PCIe 4.0 x16 256 Gbps => 64 GB/s 2018 NVLink 1.0 640 Gbps => 80 GB/s 2016 NVLink 2.0 1200 Gbps => 150 GB/s 2017 8b/10b Encoding Effective rate is 80% marketed rate due to mapping; comms rate @ local|network [disk/lan/...]; accommodates peculiarities [DC balance, clocking, ...] @ physical layer. http://en.wikipedia.org/wiki/8b/10b_encoding SATA http://en.wikipedia.org/wiki/Serial_ATA 3/8 = .375, but 8b/10b encoding, so max @ 2.4 Gbps; 2.4/8 = 300 MB/s M.2 <= PCIe 3.0 up to 4 lanes (x4) PCI Express [PCIe] https://en.wikipedia.org/wiki/PCI_Express Versions [history] v1.x1 2 Gbps 250 MB/s v2.x1 4 Gbps 500 MB/s PCIe [x16] v1.x16 32 Gbps 4 GB/s v2.x16 64 Gbps 8 GB/s Lanes [channels]; x1 ["by one"]; that's one lane [channel]. Each lane consists of two differential pairs, TX & RX [each pair @ 2.5 Gbps] Each lane bandwidth is 2 * (2.5 Gbps) = 5 Gbps [625 MB/s] ~ 500 MB/s PCIe 2.0 x1 4 Gbps 0.5 GB/s x2 8 Gbps 1 GB/s x4 16 Gbps 2 GB/s x8 32 Gbps 4 GB/s x16 64 Gbps 8 GB/s PCIe 3.0 x2 16 Gbps 2 GB/s x4 32 Gbps 4 GB/s PCIe ×1, ×4, ×8, ×16, ×32 PCIe vendors use "×size @ ×speed" notation; physical vs. electrical; #-slots vs. #-speed E.g. (common), ×16 @ ×4 - fits x16 slot, but runs in x4 mode; that is, # of actual channels is 4; runs @ x4 speed. PCIe 4.0 ×16 256 Gbps 32 GB/s Data Rates per Interface ------------------------ https://en.wikipedia.org/wiki/List_of_interface_bit_rates