QUOTE(mrbob @ Jan 12 2015, 03:35 PM)
Doesn't all technologies require mass adoption to drive down the cost of manufacturing? Look at the current cost of PCIe-based storage and its acceptance among consumers. As you have demonstrated here, most consumers are still contented to be on SATA3 SSDs.
Some problems may go away but I doubt that the PCIE bus bandwidth sharing issue will go away. As GPU tech continues to improve with each iteration, more bandwidth will be required to drive the GPU. It will be interesting to see how the different manufacturers handle this bandwidth problem as the technology matures.
Why is this important? Consider the 4k video technology, at 24fps uncompressed 4K video (3840x2160, 12-bit RGB color) requires the bandwidth of approximately 900MB/s, well beyond SATA3 capability. Then again, we may have to re-engineer our data HDDs to ensure that they ARE capable of supporting 4k video in the near future. As we grow beyond 1080p, the exponential growth of data means that we will need new technology that don't limit us to 2x storage devices per PC (eg SATAe and M.2 on the existing Z97 and X99 motherboards).
Since SATA was developed to replace PATA storage technology in 2003 and successor to this decade old technology has come in the form of SATA Express (SATAe) which has a wider footprint compared with others. While the technology looks promising, its future is hazy beyond Intel Series 9 motherboards considering the shrinking real-estate of PC motherboards and whether Intel decides to integrate it to its future chipsets before we see it go mainstream. In the mean time, the next 2 years will see rapid introduction of new storage technology that promises to double the available bandwidth for storage devices.
first, pcie ssd is a new technology. i should say ssd technologies in general is still at active evolution stage. as storage, it will take quite some time to become as common and affordable as hdd today. to achieve mass adoption they started by using sata technology.
second, about pcie lane sharing, i think the actual question that needs to be answered is how more pcie lanes can be introduced to the system. evolution of new technologies almost always creates limitations to existing ones, and we cannot expect everything else to stop move forward when this happens, right? it's a good thing you know
currently, the ideal consumer systems to make better use of pcie ssd is x99 systems. these systems have more pcie lanes than z97 ones, so you can get the best of both world. (gpu and pcie ssd; well sort of) (ok yeah i just simplify stuff in order to explain things

) things like 4k videos are highend stuff, that need highend hardware, which brings me to another point: price. new technologies are initially all expensive. like 4k monitors, i don't really expect high adoption in consumer space any time soon. then how do these new products earn the keep in this competitive market? before they can go mainstream, they create limitations to the existing ones, so that other hardware in a system need changes as well in order to stay in the market (while maintaining their price as competitive as possible). all in all, we consumers benefit sooner if not later. all we need is to wait for the right time

by the way to solve the issue about storage bandwidth limitations, i think raid with multiple sata ssd's might be a better solution than to use ultra-speed spindle disks. as for satae, i am not really sure of its success in the future. your suggestion of adopting sas drives makes more sense.
QUOTE(1024kbps @ Jan 12 2015, 06:23 PM)
Didn't know it

EFI booting might be good for laptop or low end PC, i don't know about Intel mobo, but AMD 900 series mobo and older does not support RAID anymore if EFI enabled.
My pc still on legacy mode which booting is far much slower than my HTPC lol

Another way to boot the m2 SSD without OPROM probably is install the bootloader on bootable SSD/HDD, but this is just a theory.
i think there will be a day that nvme ssd supports oprom hehe (maybe by that time you already switched your system to a compatible one lol)
edit: one of the few things that makes me feel thrilled about new technologies like ssd is always the chances that technological spin-offs can happen to other matured hardware parts (most of them have only slow and little or no developments)
again, it's up to you to be early adopters of new technologies. there are risks that you must know (like incompatibility to current systems, and then there are these terrible price tags) if you don't wanna be one, tbh you have nothing to lose. we just need to be aware of these new things and put them into our wish lists if the price is right.
there are always cheaper ways to achieve the same outcomes with existing technologies. matured technologies have one common advantage: abundance. for instance, most of our systems have a lot of sata ports. if that's not enough you can grab raid cards (still affordable). the implementation is not that impressive, but it gets the job done. and it's cheaper.
This post has been edited by horns: Jan 13 2015, 10:34 AM