Alabama (AL) Sales Tax Rates by City. The state sales tax rate in Alabama is 4.000%. With local taxes, the total sales tax rate is between 4.000% and 11.000%. Alabama has recent rate changes (Tue Sep 01 2015). Select the Alabama city from the list of popular cities below to see its current sales tax rate.
Stands for Double Data Rate Type 3.. DDR3 is a type of SDRAM that is used for system memory. It is available in both DIMM and SO-DIMM form factors. DDR3 RAM is similar to DDR2 RAM, but uses roughly 30% less power and can transfer data twice as fast.
Around the year 2000, double data rate random access memory (DDR RAM) was developed. This moved data twice in a single clock cycle -- at the start and end. The introduction of DDR RAM also seems to have changed the definition of SDRAM, as many sources now define it as single data rate RAM.