if you've been watching the development of solid state drives or ssds you might
have noticed a trend over the last few years Peak throughput the maximum speed
that you can read from or write to an SSD was increasing by Leaps and Bounds
approaching 600 megabytes per second and then poof it
stopped now that's not because ssds can't be faster but because SATA 3 6
gbit per second the interface that they use to connect to your PC tops out at
around that speed creating a bottle NE of course this problem is nothing new
history lesson time Serial ATA or SATA was actually
introduced way back in 2003 to replace
parallel ATA or paa which you might remember as those bulky flat gray cables
that you saw inside your parents old Packard Bell P topped out at around 133
megabytes per second which was fine for slow mechanical hard drives and since
ssds were virtually unknown in the consumer PC space there wasn't much need
for anything faster for most users I mean even the jump from P 100 to P 133
was considered Superfluous at the time with the first revision of SATA we saw
throughput modestly increased to 150 megabytes per second then it doubled to
300 megabytes per second on the second rev and doubled again to 600 megabytes
per second on the third to try to keep up with user demands as ssds became more
ubiquitous and at this point you may be asking okay then lonus why don't they
just double it again and give us 1,00 megabytes per second of throughput with
those little SATA cables that are so good for case air flow well one of the
main hurdles is actually power simply boosting the speed of the SATA
connection Beyond 6 gbit per second takes a lot more juice so the powers
that be decided to go in a bit of a different direction enter SATA Express
unlike previous SATA revisions this isn't just a faster version of the same
fundamental technology SATA Express is
truly different in that it really isn't its own interface at all what C Express
does is it connects your ssds directly to your computer's PCI Express Lanes PCI
Express is such an efficient and fast interface that even the previous
revision PCIe 2.0 wouldn't bottleneck
the latest graphics cards in most situations so it should be pretty easy
to imagine the performance gains you could get by using PCIe to connect to
your storage devices modern implementations of SATA Express can
achieve anywhere from one Gigabyte per second to 4 gabt per second and can
continue to scale in the future there are some other cool things about SATA
Express 2o one is called m.2 which is okay not quite SATA Express but a
closely related standard that allows little tiny high performance ssds to be
mounted on addin cards with m.2 slots
and a second is called NVMe or nonvolatile Memory Express this is a new
logical way to access storage that is correctly optimized for highpe speed
solid state devices it replaces ahci the
older driver that controls SATA drives and was designed for magnetic drives
NVMe was specifically made for PCI
Express based ssds and will offer lower latency and take better advantage of the
high degree of parallelization that is possible with these sorts of devices
among other performance improvements well lonus all this sounds just peachy
but how do I get my hands on SATA Express the answer is that you can't yet
many motherboards with either an Intel h97 or z97 chipset will have SATA
Express ports which are thankfully backwards compatible with a couple of
SATA plugs to regular 6 gbit per second drives but at this time there are no
SATA Express drives available to general consumers to plug into them of course if
you're a real speed demon who just can't wait remember that right now you can
pick up true PCI Express ssds that slot
directly into the board or m.2 ssds that
also utilize the PCI Express Bus as I mentioned before both of these will be
able to give you speeds far beyond what you'd be able to get with SATA 3 in
theory although in practice ah the difference might not be
that noticeable to most people speaking of differences that are noticeable to
most people do you ever feel like it's time to take your personal potential
beyond what most people think it is wow
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