Not really however, DDR4 does not require an external V REFDQ, but it does provide an internally generated V REFDQ that requires calibration by the DRAM controller. Are there any features on DDR3 that have been eliminated by DDR4? Where are DDR4 devices manufactured?ĭDR4 is produced in Micron fabs around the world, including Virginia, Japan, and Taiwan. For systems that do not need speed increases above DDR3-1333 and DDR3-1600, DDR4 can support these slower bandwidth requirements with substantially lower power requirements. Optional Command Address Latency (CAL) Can DDR4 operate at slower DDR3 speeds?ĭDR4 is backward compatible as far back as DDR3-1333. Optional Maximum Power Saving Mode featureĤ. Optional ODT Input Buffer Disable Mode For Power-Down featureģ. Lower power pseudo-open drain drivers for the DQ pinsĢ.
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