Bandwidth
From Noah.org
9600 baud is about a screen per second of text
A 9600 "baud" connection is a little less than 1K per second. That's about 1 screen full of human text on an 80x24 terminal every second. ... Really, if every line was filled solid that's about one full screen every 2 seconds. Typical text for humans averages using only 1/2 the screen.
16550 UART
16550 UART chips can handle up to 115.2 kbit/s (115200 bps)
Bandwidth comparisons
kbps = kbit/s = kbits per second = thousand bits per second
MBps = MByte/s = MByte per second = megabytes per second
Connection | Bits per second | Bytes per second | Real World Expected Throughput | |
---|---|---|---|---|
TTY (V.18) | 0.045 kbit/s | TTY uses a Baudot_code code, not ASCII. This uses 5 bits per character instead of 8, plus one start and 1.5 stop bits (7.5 total bits per character sent). | 6 characters per second | |
Modem 300 (300 baud) (Bell 103 or V.21) | 0.3 kbit/s | 0.03 kB/s (30 characters per second ~ about reading speed) | ||
serial 9600 8N1 (close to V.32 9600 baud) | 9.6 kbit/s (10 bits per word) | 0.96 kB/s | ||
Modem 56k (V.92) | 56.0/48.0 kbit/s | 5.6/4.8 kB/s |
| |
DS1/T1 | 1.544 Mbit/s | 0.192 MB/s | ||
T2 | 6.312 Mbit/s | 0.789 MB/s | ||
T3 | 44.736 Mbit/s | 5.5925 MB/s | ||
OC1 | 51.84 Mbit/s | 6.48 MB/s | ||
OC3 | 155.52 Mbit/s | 19.44 MB/s | ||
Ethernet (10base-X) | 10 Mbit/s | 1.25 MB/s | 6 Mbit/s (0.75 MB/s) | |
Fast Ethernet (100base-X) | 100 Mbit/s | 12.5 MB/s | 60 Mbit/s (7.50 MB/s) | |
Gigabit Ethernet (1000base-X) | 1000 Mbit/s | 125 MB/s | 600 Mbit/s (75 MB/s) | |
Bluetooth 2.0+EDR | 3 Mbit/s | 0.375 MB/s | ||
802.11b | 11.0 Mbit/s | 1.375 MB/s | ||
802.11a | 54.0 Mbit/s | 6.75 MB/s | ||
802.11g | 54.0 Mbit/s | 6.75 MB/s | ||
802.11n | 248.0 Mbit/s | 31 MB/s | ||
PCI 32-bit/33 MHz | 1067 Mbit/s | 133.33 MB/s | ||
PCI 64-bit/100 MHz | 6399 Mbit/s | 800 MB/s | ||
Serial ATA (SATA-150) | 1500 Mbit/s | 187.5 MB/s | ||
Serial ATA (SATA-300) | 3000 Mbit/s | 375 MB/s | ||
Serial Attached SCSI (SAS) | 3000 Mbit/s | 375 MB/s | ||
RS-232 Serial max | 0.2304 Mbit/s | 0.0288 MB/s | ||
USB 2.0 (USB Hi-Speed) | 480 Mbit/s | 60 MB/s | ||
eSATA (SATA 300) | 2400 Mbit/s | 300 MB/s | ||
USB 3.0 | 4.80 Gbit/s | 600 MB/s | ||
PC2100 DDR-SDRAM (single channel) | 16.8 Gbit/s | 2.1 GB/s | ||
PC3200 DDR-SDRAM (single channel) | 25.6 Gbit/s | 3.2 GB/s | ||
PC2100 DDR-SDRAM (dual channel) | 33.6 Gbit/s | 4.2 GB/s | ||
PC3200 DDR-SDRAM (dual channel) | 51.2 Gbit/s | 6.4 GB/s |