And again !!!
Samsung are just showing off now !!!
AND I LOVE IT (proud 850 evo owner now)
Cant wait till these get built into the latest batch of phones !
Samsung’s latest small form factor PCIe flash drive shunts data at up to 2.15GB/sec, making it a right speedy little critter. It’s also much more power-efficient, using its “L1.2 low power standby mode (which allows all high-speed circuits to be turned off when a PC is on sleeping or in hibernation) as defined by PCI-SIG (the …
I hate to break this to you, but these will never go in phones. They're too big, too high power (they need > 4w at full chat) and use the wrong kind of interface (PCIe rather than ONFi for example). These parts are designed for laptops, and possibly at the outside desktops.
AFAIK it is the drive interface that is the prob... The OS regularly polls the drive, (of course) thinking it is still 'rotating' media to keep it ready...
B U T the picture of this SSD above is not clear -- it does not look like a PCIE connector, and it looks a bit long to fit in a SATA slot (the number of contacts may be ok, if no 'hot swap' capability... )
must be some 'simple' PCIE, but then a device driver would be needed to make it look like a drive... :(
SATA is much simpler, just plug it in...
read this to see why PCIE is not THAT better... Until the get a *another* new spec that will do it... {yawn}
It's an m.2 connector, most mid-range or above motherboards come with the ports now. They come in either PCIE or SATA formats, and the PCIE versions can be a _lot_ faster. There aren't many PCIE drives out yet though. This one looks pretty tasty, depending on price and if you can get them retail.
EDIT: also, that article is from 2010, so yeah, a bit behind the times..
No, they got it right. They're saying it would take the reading of a total of 450MB of sequential data for the device to consume 1W of power and 250MB for writing. Meaning it's probably able to selectively power storage chips up and down as needed. A random operation would require more chips to be online at a time, reducing the power efficiency somewhat, but perhaps you get the picture now.
They didn't get it right.
A Watt is 1 Joule per second. Your interpretation makes no account of read speed. You say that reading a total of 450mb would consume 1W. What if that read took 10s? Would it stil consume 1W over all those seconds?
You can't actually consume 1W of power. What you can do is draw 1W of power for a certain amount of time.
From the article:
"more than 50 per cent of improvement in performance per watt over that of the XP941 SSD"
"50 per cent faster for sequential reading and writing. "
Looking at both sentences, does that mean this drive uses about the same total power as the previous gen, albeit with higher performance?
Based on the stats and the article, it's somewhere in between "more performance for the same power consumption" and "the same performance for less power consumption". It has somewhat better performance than before while also using less power than its predecessor.
>> The XP941 was rated at 73TB written (40GB/day) and had a 3-year warranty.
So is the idea that SSD drives are now *designed* to only work for a few years? Seems to me that SSD is actually big step backwards if that's true. I've had the same mechanical hard drives in my PC for maybe 10 years now with no problems.
The lifespan is inherent in the way flash memory works. A combination of how often you re-write data blocks and how many spare blocks are set aside in the device to account for write-worn ones determines actual life.
If you are determined, you can wear out a flash drive in minutes, if you (or more accurately your software stack*) are careful, you can make it last well beyond the manufacturer's spec.
* Current-gen OSes and applications aren't really optimised for this. As using flash for the OS/App/Immediate-data storage device becomes ubitiquous I imagine they will be tuned that way.
>> So is the idea that SSD drives are now *designed* to only work for a few years?
Not so much designed only to work for a few years, more a case of a technology that will only work for a few years before wearing out. More accurate to say can only be written to so many times, read operations don't affect drive life.
Worse as cell geometry shrinks (and IOPS goes up) endurance falls off.