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In April 2014, Hynix announced that it has developed the world's first highest-density 128 Gi B module based on 8 Gib DDR4 using 20 nm technology.
Although a low-voltage standard has yet to be finalized (as of August 2014 DDR4 was described as involving a 30 nm process at 1.2 volts, with bus frequencies of 2133 MT/s "regular" speed and 3200 MT/s "enthusiast" speed, and reaching market in 2012, before transitioning to 1 volt in 2013. However, DDR4 test samples were announced in line with the original schedule in early 2011 at which time manufacturers began to advise that large scale commercial production and release to market was scheduled for 2012.As a result, the desired premium pricing for the new technology was harder to achieve, and capacity had shifted to other sectors.SDRAM manufacturers and chipset creators were, to an extent, "stuck between a rock and a hard place" where "nobody wants to pay a premium for DDR4 products, and manufacturers don't want to make the memory if they are not going to get a premium", according to Mike Howard from i Suppli. The minimum transfer rate of 2133 MT/s was said to be due to progress made in DDR3 speeds which, being likely to reach 2133 MT/s, left little commercial benefit to specifying DDR4 below this speed.These effectively act as three more bank select bits, bringing the total to seven (128 possible banks).Standard transfer rates are 1600, 1866, 2133, 2400, 2666, 2933, and 3200 MT/s DDR4 memory is supplied in 288-pin dual in-line memory modules (DIMMs), similar in size to 240-pin DDR3 DIMMs.