AMD’s Upcoming Radeon R9 390X Could Feature 4096-bit Memory Bus!
We only just posted two articles about a couple of NVIDIA GeForce GTX 900 series cards, so maybe AMD noticed and thought it would be a good time to tease their upcoming Radeon R9 390X. We only reported on the Fiji XT a couple of days ago, but now we’re hearing much more detailed specs on what this behemoth will end up arriving as.
According to leaked information, the R9 390X would have a 4096-bit memory bus, and while that might sound impressive – consider this, the current GeForce GTX 980 has a 256-bit memory bus, and memory bandwidth of around 224GB/sec. The R9 390X on the other hand, according to these rumors, would be plugging away inside of your PC with 640GB/sec of memory bandwith.
This is all thanks to the use of High-Bandwidth Memory chips (HBM) that have a 1024-bit IO interface – four of those stacked together (2Gb DRAM dies) equals a huge 4096-bit memory bus. My head is still spinning at this, so let’s just hope these rumors turn out to be true.
4096 bit? are you sure?
Holy smoke!!! Is it already 2025? I don’t believe it, not yet anyway.
well it’s stacked ram…yeah, the way gpu works so they add up.