On Wed, Apr 26, 2017 at 09:41:34PM +1000, Wayne Blaszczyk wrote: > On Wed, 2017-04-26 at 21:37 +1200, Simon Geard wrote: > > On Tue, 2017-04-25 at 23:36 +1000, Wayne Blaszczyk wrote: > > > As mentioned in my previous email, I got a Sumsung 250GB SSD 960 EVO > > > M.2. Apparently the M.2 SSD drives are much faster than the SATA SSD > > > drives. > > > FYI, the device shows up as /dev/nvme0n1. > > > > > > > Depends on the drive. A SATA-based SSD over M.2 will not be > > significantly quicker than one over a regular SATA connection... > > they're limited more by the SATA controller than the method of > > connection. > > > > But an SSD drive using NVME (as yours is) will be a lot quicker, > > because the storage is wired straight to the PCI bus, without going > > through a SATA controller. Manufacturers claim about 4 times quicker, > > for what that's worth... > > > > However, they're also significantly more expensive - the 960 EVO you're > > using is priced at about 80% more than the SATA-based 850 Bruce is > > using. I'd love one - but not at that price point. > > > > Simon. > > Hmm, maybe I'm getting mixed up in what M.2 actual means. I though M.2 was > NVME. > BTW, before my new purchase, I never heard of M.2 or NVME. Its shows how out > of touch > I've been in regards to new hardware technology. It was the sales person > who suggested it after I initially when for the "regular" 850 EVO SSD. > > These are the prices from the local store that I got my system from. > Samsung 250GB SSD, 960 EVO Series, m.2 (PCIE), Read up to 3200MB/s, Write up > to 1500MB/s $189AUD > Samsung 250GB SSD, 850 EVO Series, m.2 (SATA), Read up to 540MB/s, Write up > to 500MB/s $145AUD > Samsung 250GB SSD, 850 EVO Series, SATA III, 7mm, Read up to 540MB/s, Write > up to 520MB/s $144AUD > That's about a 30% difference. > > Regards, > Wayne. >
Thanks to both of you for this thread - I had assumed that only DataCenter-grade products (as in "unaffordable") were nvme, and those (of course) have ridiculous prices. But I had also been puzzled about why the few M2 SSDs that I looked at on my main supplier's website mentioned 'SATA' - now I understand. So, if I do get a new box to attack my backlog of photos, I guess I'll want to get a SATA SSD for the system and an M2 nvme for /home where the photos live while I'm manipulating them. Did I ever mention that writing in gimp-2.9.4 is slow ? Cheers ĸen -- I live in a city. I know sparrows from starlings. After that everything is a duck as far as I'm concerned. -- Monstrous Regiment -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
