A comparison between single data rate, double data rate, and quad data rate.

In one embodiment, the rate request indicator is a Data Rate Request (DRR).

It is the second version of Double Data Rate Synchronous Dynamic RAM.

Bluetooth® version 2.1 with enhanced data rate

Connectivity: Bluetooth 2.0 with Enhanced Data Rate

The computer comes with double data rate 2 synchronous dynamic

Version 2.0 of Bluetooth: EDR (Enhanced Data Rate)

A high data rate communication system operating at frequencies greater than 70 MHz and at data rates of about 1.25 Gbps or greater.

DIMMs are available in four variations: SDR (single data rate), DDR (double data rate), DDR2, and DDR3.

They include single data rate (SDR) SDRAM, double data rate (DDR) SDRAM, DDR2 SDRAM, DDR3 SDRAM and DDR4 SDRAM.

Types of SDRAM include single data rate (SDR) SDRAM, double data rate (DDR) SDRAM, DDR2 SDRAM, DDR3 SDRAM and DDR4 SDRAM.

Generations of SDRAM include SDR (Single Data Rate) SDRAM, DDR (Double Data Rate) SDRAM, DDR2 SDRAM, DDR3 SDRAM and DDR4 SDRAM.

DDR means Double Data RAM or Random Access Memory.

DDR2 (double data rate, second generation) appeared in 2004.

DDR2 (second generation double data rate) technology began to appear mid-2004