Next to the graphics core, memory is another critical component for a graphics card to become an assured success.
Currently, all graphics cards that are either medium range and high end use of GDDR5 memory as a standard, which offers better performance than expected reaching high frequencies that no one could imagine before. While standard estimates were set at 1.5 GHz QDR, ie 6.0 GHz effectively (speed easy to see in the top end cards of AMD or Nvidia), with overclocking it is possible to achieve 1.85 GHz (7.4 GHz). This leads us to exceed 250 GB/s of bandwidth.
We can say that GDDR5 has reached its life cycle, which is why GDDR6 is already being developed for future memory modules, this future standard should arrive in 2014, ending its life cycle later in 2020. There is no more data regarding GDDR6 memory, which is is normal, there is still much ahead, but we must not forget the XDR2 Rambus memory, which at first we thought were going to give life to the new AMD Radeon HD 7000 Series and offer twice the standard bandwidth of GDDR5.
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