Apple Lossless Audio CODEC (ALAC),, and most laptop manufacturers, use RAM DDR3 for their own products, but this could change during this year. Micro, one of the main suppliers of RAM for Macs, will release new modules DDR4 during this year, they following a double the bandwidth, the battery autonomy being improved at the same time. If DDR3 RAM now has a bandwidth of 17GB/s, for DDR4 we can expect 34GB/s, the performances will increase accordingly.
Since the introduction of the iPhone, the industry has responded with an evolutionary transition from 2.6 GB/s LPDDR1, to 8.5 GB/s LPDDR2, to 17 GB/s LPDDR3, the technology currently powering today's high-end devices in volume production. DRAM bandwidth has roughly doubled with each generation to keep pace with demand. The next generation of low-power DRAM (LPDRAM)—also known as LPDDR4—addresses these constraints by doubling the bandwidth of LPDDR3 while maintaining power neutrality. For example, LPDDR4 targets 34 GB/s of total bandwidth for a x64 memory subsystem, doubling the bandwidth target from LPDDR3.
Although it will arrive in Macs first, RAM DDR4 will arrive later and in iPhoneor tablets iPad, and from here you can imagine how much the performances will increase. With a new processor and RAM DDR4, Apple can once again double the performance of its iDevices and would leave many manufacturers of mobile terminals without a reply, at least for a few months. Even if everything is presented now as a simple rumor, the transition to DDR4 will be made during this year, even if not with the MacBook Air.
