Transfer Speed

Theoretical Transfer Speed Maximum

Die unten aufgeführten Übertragungsraten stellen jeweils das Maximum dar, das über das jeweilige Protokoll übertragen werden kann. In der Praxis liegen die Werte meist darunter, weil entweder die Peripheriegeräte langsamer arbeiten (z.B. Harddisks an schnellen SCSI-Karten), die Bandbreite unter verschiedenen Geräten aufgeteilt werden muss (z.B. USB) oder der Server die Daten nicht genug schnell über das Netzwerk schickt (z.B. Modem/Internet).

The transfer rates shown below are the theoretical maximum possible using the shown protocol. In daily use these rates are often much lower because the devices do not work that fast (e.g. harddisks on fast SCSI adapters), they have to share the bandwidth (e.g. USB) or the server doesn't send data fast enough (e.g. modem/internet).

Links:

Protocol Mbps MBps Comment
(Mbit/sec) (MB/sec)
ADB 0.010 0.00 Apple Desktop Bus
Serial 0.230 0.03 230 kbps
Serial/Geoport 2.000 0.25  
GSM/Mobile Phone 0.010 0.00 9.6kbps
14.4 Modem/Fax 0.014 0.00 14.4 kbps
28.8 Modem 0.029 0.00 28.8 kbps
33.6 Modem 0.034 0.00 33.6 kbps
56k Modem 0.056 0.01 56 kbps
ISDN 0.064 0.01 64 kbps
ISDN (2 Channel) 0.128 0.02 128 kbps
USB (low) 1.500 0.19 Universal Serial Bus (Intel)
USB (high) 12.000 1.50 Universal Serial Bus (Intel)
USB II (Prototyped) 480.000 60.00 Prototyped
IrDA (Infra Red) 4.000 0.50 PowerBook G3, iMac Rev. A&B
AirTalk 11.000 1.38 Network Wireless
Ethernet 10BASE 10.000 1.25 Network
Ethernet 100BASE 100.000 12.50 Network
Ethernet 1000BASE 1000.000 125.00 Network
SCSI 40.000 5.00 ANSI X3.131-1986
SCSI-II (Fast) 8Bit/Narrow 80.000 10.00 SCSI FAST; ANSI X3.131-1994
SCSI-II (Fast) 16Bit/Wide 160.000 20.00 SCSI FAST; ANSI X3.131-1994
SCSI-III Ultra Narrow 160.000 20.00 SCSI FAST-20 (8Bit)
SCSI-III Ultra Wide 320.000 40.00 SCSI FAST-20 (16Bit)
SCSI-III Ultra2 Narrow 320.000 40.00 SCSI FAST-40 (8Bit) - Ultra2 = LVD, Low Voltage Differential
SCSI-III Ultra2 Wide 640.000 80.00 SCSI FAST-40 (16Bit) - Ultra2 = LVD, Low Voltage Differential
SCSI-III Ultra3 Narrow 640.000 80.00 SCSI FAST-80 (8Bit)
SCSI-III Ultra3 Wide 1280.000 160.00 SCSI FAST-80 (16Bit)
FireWire 400.000 50.00 IEEE-1394
FireWire II (Prototyped) 800.000 100.00 Prototyped
ATA 66.400 8.30 IDE
ATA-2 132.800 16.60 IDE
ATA/33 (UltraATA) 266.666 33.33 IDE
ATA/66 533.333 66.67 IDE
CD 1X (Audio) 1.200 0.15 Audio-CD
CD 2X 2.400 0.30  
CD 4X 4.800 0.60  
CD 8X 9.600 1.20  
CD 16X 19.200 2.40  
CD 24X 38.400 4.80  
CD 32X 76.800 9.60  

ChartObject Theoretical Transfer Speed in MBps (MB/sec)

ChartObject Theoretical Transfer Speed in MBps (MB/sec)