According to the latest reports, AMD's upcoming flagship Fiji XT based graphics card, Radeon R9 390X, could feature 8GB of High Bandwidth Memory after all, by using a dual link interposer to fit two 4-HI HBM components.

According to a fresh report from Bitsandchips.it, citing internal sources, AMD should announce the Radeon R9 390X at Computex 2015 and it will also come with 8GB of memory. Apparently, AMD will use SK Hynix technology called a "Dual Link Interposer", which will allow it have more than 4GB of memory without using 2nd Generation High Bandwidth Memory (HBM).

It was previously believed that AMD will have to stick with 4GB of HBM due to limitations of the 1st generation and wait for the second generation of HBM to come up with higher memory capacity graphics card. Apparently, AMD was quite keen on putting more than 4GB of memory on its flagship graphics card and thanks to Dual Link Interposer technology, AMD will be able to squeeze four, dual 1GB HBM modules via an Interposer (2.5D memory stacking).

This also raises some questions regarding the rumored dual-GPU graphics card which should now end up with 16GB of HBM or keep with the original 8GB, 4GB per GPU.



Source: Wccftech.com.