The symmetric circuit structure allows the value of a memory location to be read much faster than in a DRAM.
Fast SRAM is faster than DRAM and is used where speed is the most important requirement. Slow, low-capacity SRAMs are used where low power consumption and low cost are the most important requirements. The power consumption of SRAM varies widely depending on its speed. Fast SRAM requires more power than DRAM. Slow SRAM, such as the battery-powered "CMOS" RAM on PC motherboards, has very low power consumption.
