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JEMC on 21 May 2015
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Eddie_Raja said:
bunchanumbers said:
I'm definitely not a expert, but wouldn't the speed of the HBM alleviate some of this? I thought that the speed difference of HBM was massive compared to GDDR5.


It is double the fastest GDDR5 cards, and on top of that it is by using a massive bus (Bigger bus > than higher speed if they are equal in total bandwidth).

HBM is not twice as fast as GDDR5, at least not in this first iteration.

A card with 4 stacks of 1GB of HBM will have a total bandwidth of 512GB/s while the TitanX has 336GB/s and the 290X 320GB/s.

http://www.anandtech.com/show/9266/amd-hbm-deep-dive/4



Please excuse my bad English.

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