What is difference betwteen SFP/GBIC (mini GBIC)?

1. What is a GBIC? 


Giga Bitrate Interface Converter GBIC is an abbreviation, is the gigabit optical signal into electrical signal interface devices. GBIC is designed for hot use. GBIC is an international standard interchangeable products. With GBIC Gigabit switch interface design flexibility as interchangeable in the market account for a large market share. 


2. What is SFP? 


SMALL FORM PLUGGABLE SFP is an abbreviation, simply understood as an upgraded version of GBIC. SFP GBIC module module volume ratio reduced by half, the same panel can be configured more than double the number of ports. SFP Module GBIC same basic and other features. Some switch vendors said the SFP module is small GBIC (MINI-GBIC). SFP Module GBIC same basic and other features. 




Summary: 


1.GBIC is larger than SFP. 
2.SFP is in prominent use while GBIC is already obsolete. 
3.GBIC and SFP are equal in performance.