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Laptopmag: 13" 256GB SSD much faster than 11" 256GB SSD.
- Thread starter Philflow
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Probably not, as posted on the first page the 128GB SSD seems to be the same as last year.
yes
That is because you got more NAND dies. Thus each channel has more die to access, providing greater speeds.
So essentially it's like the difference in the speed of a 1TB hard drive versus a 2TB striped RAID0 of two 1TB drives. The RAID will give nearly twice the speed since you are writing and reading from twice the amount of drives at the same time. In the same way I am guessing the 256GB Flash reads and writes to multiple cells (twice the amount) concurrently, offering faster data throughput.
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Maybe the ones reviews were slower? Could be random like before
Maybe the ones reviews were slower? Could be random like before
Some reports are indicating the SSD is soldered, which would make an upgrade impossible. We won't know for sure until FixIt tears one down.
Not necessarily that big difference. The controller and/or the interface (SATA) aren't fast enough to take advantage of all the dies. See this for example. 60GB vs 240GB shows a more significant difference because you only got eight dies (8GB each).
However, to not make this too simple, the manufacturing process affects this as well. 2Xnm provides 8GB die, 3Xnm 4GB die and 5Xnm 2GB die. 60GB 34nm SSD should be as fast as 25nm 120GB SSD because both have the same amount of dies.
My Macbook Air 11" (1.6 ghz i5, 4gb ram, and 128gb SSD) has the SSD model number of APPLE SSD SM128C. I'm guessing that's the samsung one?
Would the 256 SSD in the 2011 translate into a real world performance difference?
Same question as to the i7.
Same question as to the i7.
Unlikely. Without having seen benchmarks I would guess the random performance will be about similar.
The i7 will only be faster during CPU intensive work. Not worth it for 80% of the people.
Okay, I was kind of thinking that...it would be worth it if I was doing FCP or video rendering most of the day.
But do you think the speed difference on the 256 SSD on the 13" will translate into a noticeable difference in daily, real world use?
I'm doing a count of ssd and display models, please share
https://forums.macrumors.com/threads/1192807/
https://forums.macrumors.com/threads/1192807/
From another thread, Frostywinter posted his i7's 13" MBA SSD stats:
https://forums.macrumors.com/posts/12993527/
Looks like the 13" i7's also come with Toshiba SSD
https://forums.macrumors.com/posts/12993527/
Looks like the 13" i7's also come with Toshiba SSD
From another thread, Frostywinter posted his i7's 13" MBA SSD stats:
https://forums.macrumors.com/posts/12993527/
Looks like the 13" i7's also come with Toshiba SSD
Thanks for posting.
Seems like a regular MBA SSD.
It's really strange Laptopmag got such a high benchmark result.
Maybe it's a testing flaw or a bug in the benchmarking software. It will be interesting to see what other testers get.
No, sequential throughput is something very different than effective copy speeds.
WD Black 750GB gets 32 MB/sec at Techreport
http://techreport.com/articles.x/20255/5
I did some more researching. Seems like the fastest a Samsung 256GB SSD can get with copying files is about 115 MB/sec. (source)
I'm still curious to see how the MBA got to 127 MB/sec, maybe the formfactor of the Air SSD plays a role.
So the difference between the 11" and 13" in the chart could well be Samsung vs. Toshiba.
Edit: more explained: http://www.storagereview.com/apple_macbook_air_july2011_ssd_dissected
The Samsung performs very well.
I'm still curious to see how the MBA got to 127 MB/sec, maybe the formfactor of the Air SSD plays a role.
So the difference between the 11" and 13" in the chart could well be Samsung vs. Toshiba.
Edit: more explained: http://www.storagereview.com/apple_macbook_air_july2011_ssd_dissected
The Samsung performs very well.
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