Colleagues from VR-Zone explain why, the GeForce GTX 970 and GeForce GTX 980 are not released in versions with 8 GB GDDR5 memory . They found the memory manufacturers still do not offer suitable chip that could and operate at frequencies around 7 GHz QDR in 8 GB volume . In particular, corresponding GDDR5 memory chip Samsung will begin to deliver in the form of samples only in the current quarter:
In this case, the GeForce GTX 980 and GeForce GTX 970 might be useful to chip layout 256Mx32, which allows to use 8 GB of eight chip capable of operating at frequencies of 7.8 GHz QDR.
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