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Print 23 comment(s) - last by Chocobollz.. on Dec 11 at 1:12 PM

New processes push technology to the verge of commercialization

Sources: IBM [1], [2]





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RE: Bandwidth
By Egglick on 12/10/2012 1:40:55 PM , Rating: 2
Yeah, a single 25GB/s lane would be enough for most any current consumer-level addon card. The biggest benefit would be to the System RAM though. This sort of technology would both drastically increase bandwidth, and also lower latency to almost nothing. You could theoretically see system RAM which comes close to the speed of the CPU's onboard cache.


RE: Bandwidth
By jdietz on 12/10/2012 4:13:04 PM , Rating: 2
No it won't. It'll be closer to being a "true" L4 cache.

Modern system latency:
Register: Next cycle
L1 Cache: 4 cycles (Ivy Bridge)
L2: 12 cycles (Ivy Bridge)
L3: 24 cycles (Ivy Bridge)
RAM: 133 cycles (Ivy Bridge @ 3.4GHz)

This tech may help reduce RAM latency. Not sure exactly how much. Other tech might help more at reducing latency, like phase-change RAM.


RE: Bandwidth
By Egglick on 12/10/2012 6:17:35 PM , Rating: 2
Of course I'm not talking about using existing DRAM technology. You would want to design something entirely new in order to take advantage of the exponentially faster interconnects.


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