Thanks, this is what I feared. Though going 500GB should help a bit you say?
This review only includes the 2TB and 512GB models, but it gives you an idea:
http://www.anandtech.com/show/9451/the-2tb-samsung-850-pro-evo-ssd-review/3
I had to go look for a review that includes three different sizes - here's one for the Cruical models:
http://www.anandtech.com/show/9144/crucial-bx100-120gb-250gb-500gb-1tb-ssd-review/4
For Samsung's part, they list the performance as follows (for the 850 Evo):
Random Read (4KB, QD32)
- 120 GB : Up to 94,000 IOPS
- 250 GB : Up to 97,000 IOPS
- 500GB, 1TB, 2TB : Up to 98,000 IOPS
Random Write (4KB, QD32)
- 120,250 GB : Up to 88,000 IOPS
- 500GB, 1TB, 2TB : Up to 90,000 IOPS
The gap seems to have closed a bit in the 850 series (or Samsung is cooking the numbers) - the difference is a bit more prominent in the 840 Evo series:
Random Read (4KB, QD32)
- Max. 98,000 IOPS (500GB / 750GB / 1TB)
- Max. 97,000 IOPS (250GB)
- Max. 94,000 IOPS (120GB)
Random Write (4KB, QD32)
- Max. 90,000 IOPS (500GB / 750GB / 1TB)
- Max. 70,000 IOPS (250GB)
- Max. 36,000 IOPS (120GB)
It is:
SATA1 = 1.5G
SATA2 = 3G
SATA3 = 6G
And Neoprod is right: I have a 2011 MBP (Sandybridge) and it has SATA3 controllers.
For what it's worth, I picked the 850 Pro over the 850 Evo for the following reasons:
840 Evo 850 Evo 850 Pro MTBF 1.5 million hours 1.5 million hours 2 million hours TB Written ? (840 Pro was 73 150 300 Warranty 3 years (or TBW limit) 5 years (or TBW limit) 10 years (or TBW limit)
The 480 GB OCZ Vertex II in my MBP is on its last legs, and since I replace my laptops roughly every 5 years, its replacement will spend maybe a year in the MBP and the rest of its life in my PC, where it will mostly be used for video editing, so I'd like it to last a while
(side note: anyone know how to make a new line after a table?)
Thanks again for the detailed info. I suppose the 850 Pro will be about as good as it gets. Great warranty too, of course.
One thing that concerns me is that the 850 Pro has been out a while now. I wonder if its replacement is imminent or not.
Samsung or Intel.
Would have preferred Intel but it doesn't look like they're competing too well with Samsung in this segment.
One thing that concerns me is that the 850 Pro has been out a while now. I wonder if its replacement is imminent or not.
Doesn't make the 850 any less good. You're not going to get much better performance (if any) out of a new model - they're performing very close to the limits of SATA3 already. For what it's worth, I have a SATA2 SSD in my MBP - it does about 250MB/s - but despite being much slower than the PCIe based flash in my MBA, the difference is only obvious when I write out large file from a source that's fast enough.
The thing to remember is that virtually all these SSDs should outlast their software and CPUs.
That very much depends on what your workload is like. If you do work that does a lot of writing to disk, you shorten the lifespan. I do a fair bit of video - writing 10s of GB, sometimes 100s of GB per day. My old SSD, which I've only bought about 2 years ago, is starting to fail. Granted, modern SSDs - have better reliability, but they'll still fail eventually.
Another thing to address your comment: Even with the video work I do, my 4-year old MBP comfortably handles 4K video, so I don't see a reason to replace it until 8K rolls around. What's that, another 10 years?
That very much depends on what your workload is like. If you do work that does a lot of writing to disk, you shorten the lifespan. I do a fair bit of video - writing 10s of GB, sometimes 100s of GB per day. My old SSD, which I've only bought about 2 years ago, is starting to fail. Granted, modern SSDs - have better reliability, but they'll still fail eventually.
Another thing to address your comment: Even with the video work I do, my 4-year old MBP comfortably handles 4K video, so I don't see a reason to replace it until 8K rolls around. What's that, another 10 years?
Still did you see that old Samsung 830 benchmark?
http://www.xtremesystems.org/forums...25nm-Vs-34nm&p=5136732&viewfull=1#post5136732
180 days of non-stop erasing and writing. Now that's 6months.