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Old Feb 6, 2011, 08:08 AM   #1
KPOM
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How fast is your SSD, and when did you buy your MacBook Air?

DeBilbao's recent review of the MacBook Air raised some interesting disk speed results. Specifically, he is getting read and write speeds about 12-20% faster than what the rest of us are seeing.

He downloaded Aja System Test (http://www.aja.com/products/software/) and ran the disk test with a 4GB file at the 1920x1080 and 10 bit video frame setting. Most of us are getting write speeds around 184 MB/s and read speeds of about 208 MB/s. He's getting 207 MB/s and 250 MB/s, respectively.

I'm wondering if Apple has made a running change to the MacBook Air (Rev D). I propose an informal survey. First, what are your read/write speeds running this same test? Second, when did you purchase your MacBook Air? Third, what is your Apple SSD revision number?


I'll start:

Read: 208 MB/s
Write: 184.3 MB/s

Purchased: November 2010

Revision: CJAA0201

Last edited by KPOM; Feb 6, 2011 at 08:52 AM.
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Old Feb 6, 2011, 08:27 AM   #2
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I ran it yesterday and got similar results to yours. The SSD is the same revision as yours. Got it in late November.
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Old Feb 6, 2011, 08:57 AM   #3
c0052350
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Faster

Mine are as follows write: 211.8MB/S read:263.3 MB/S 35gb of 128gb used
purchased jan 31st 2011 revision is AXM09A1Q
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Old Feb 6, 2011, 09:10 AM   #4
Narkotiq
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Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5)

How do I find out this info?
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Old Feb 6, 2011, 09:13 AM   #5
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Quote:
Originally Posted by Narkotiq View Post
Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_2_1 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8C148 Safari/6533.18.5)

How do I find out this info?
Click  > About this Mac > More info > Serial-ATA > Select the SSD > Revision

Too lazy to check that but I think that's how you find it. As for benchmarking the SSD, use the AJA System Test linked in the first post.
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Old Feb 6, 2011, 09:29 AM   #6
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I got 184/205. Interesting! I should add I bought mine on like november 24th i believe.
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Old Feb 6, 2011, 09:35 AM   #7
drison
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Revision: CJAA0201

184/204
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Old Feb 6, 2011, 09:39 AM   #8
mmonnh
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Cjaa0201
w 181.6
r 206.4
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Old Feb 6, 2011, 09:52 AM   #9
jamesryanbell
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This is the THIRD time I've read about later models being faster (SSD). I think there's something to this.
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Old Feb 6, 2011, 10:10 AM   #10
rkaufmann87
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Read: 204.0 MB/s
Write: 176.9 /MB/S

Purchased January 2011 (think it was old stock from ABT)

Revision: CJAA0201
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Old Feb 6, 2011, 10:14 AM   #11
samiznaetekto
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Similar results for CJAA0201. January 2011 from MacMall.

Can we be more specific? 11.6" or 13"? 64, 128, or 256GB? SSD model? How much space used/left?

Mine: 11.6", 128GB, APPLE SSD TS128C, 68 used/53 available.

Last edited by Mitthrawnuruodo; Feb 21, 2011 at 11:53 AM. Reason: Merging posts, please use EDIT to add to a post...
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Old Feb 6, 2011, 10:51 AM   #12
Mac32
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Yes, this is important. Larger capacity SSD models tend to be faster than smaller capacity ones. This could be why the speed is varying...
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Old Feb 6, 2011, 10:55 AM   #13
mmonnh
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13" MBA 2.13 Ghz - 4 GB Ram - 256GB SSD
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Cjaa0201
W 181.6
R 206.4
Apple Store Des Moines 1/30/11
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Old Feb 6, 2011, 10:59 AM   #14
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Quote:
Originally Posted by Mac32 View Post
Yes, this is important. Larger capacity SSD models tend to be faster than smaller capacity ones. This could be why the speed is varying...
Actually, the capacity is pretty irrelevant. When it comes to HDs, that is true because bigger capacity means the drive is denser (assuming they are the same form factor), meaning that more data can be read or written each time the HD spins.

However, this does not apply to SSDs since they don't spin. 40GB SSD is as fast as 480GB one with the same controller. Amount of NANDs may affect the speed but usually they don't.
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Old Feb 6, 2011, 11:07 AM   #15
KPOM
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Quote:
Originally Posted by samiznaetekto View Post
Can we be more specific? 11.6" or 13"? 64, 128, or 256GB? SSD model? How much space used/left?

Mine: 11.6", 128GB, APPLE SSD TS128C, 68 used/53 available.

It shouldn't make too much of a difference, since I think each version uses the same number of channels, but in any case, I have a 256GB SSD with over 50% free right now.
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Old Feb 6, 2011, 11:10 AM   #16
samiznaetekto
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Quote:
Originally Posted by KPOM View Post
It shouldn't make too much of a difference, since I think each version uses the same number of channels, but in any case, I have a 256GB SSD with over 50% free right now.
Maybe, not much difference in terms of speed, but with more detailed info we can track down which models of MBA got new revision of SSD.
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Old Feb 6, 2011, 12:14 PM   #17
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181 write, 209 read. revision CJAA0201

Bought in January from MacMall, prob old stock from original release.

Last edited by Beaverman3001; Feb 6, 2011 at 01:22 PM.
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Old Feb 6, 2011, 12:46 PM   #18
MacRuler
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i get 167 write and 196 read
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Old Feb 6, 2011, 01:09 PM   #19
whuybr0
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write 204.6
read 246.3

rev AXM09A1Q

bought yesterday
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Old Feb 6, 2011, 01:27 PM   #20
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Do you guys know if you can install a Vertex2 2.5 inch SSD in a MBA?
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Old Feb 6, 2011, 01:51 PM   #21
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Xmas 2010 purchase.
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Old Feb 6, 2011, 02:08 PM   #22
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Hmmm.. I'm starting to wonder if the SSD in newer MBAs is made by Samsung instead of Toshiba. In the past, Apple has used Samsung SSDs which were reported as "APPLE SSD SM128" in OS X. The new ones are SM128C now. It would make sense if SM stood for Samsung. Toshiba SSDs are "APPLE SSD TS128C" so again, it's logical if TS stands for Toshiba.

If I had to guess, the SSD in newer MBAs is Samsung 470-series as that has speeds of 250/220 MB/s, which makes sense when looking at the benchmarks. Apart from the speed differences, it looks like the newer ones support Native Command Queuing while older ones don't.
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Old Feb 6, 2011, 02:15 PM   #23
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Quote:
Originally Posted by Hellhammer View Post
Hmmm.. I'm starting to wonder if the SSD in newer MBAs is made by Samsung instead of Toshiba. In the past, Apple has used Samsung SSDs which were reported as "APPLE SSD SM128" in OS X. The new ones are SM128C now. It would make sense if SM stood for Samsung. Toshiba SSDs are "APPLE SSD TS128C" so again, it's logical if TS stands for Toshiba.

If I had to guess, the SSD in newer MBAs is Samsung 470-series as that has speeds of 250/220 MB/s, which makes sense when looking at the benchmarks. Apart from the speed differences, it looks like the newer ones support Native Command Queuing while older ones don't.
how very logical of you are there any negatives to using the samsung chips as opposed to toshiba? i was always very skeptical of them :/
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Old Feb 6, 2011, 02:17 PM   #24
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Quote:
Originally Posted by DoFoT9 View Post
how very logical of you are there any negatives to using the samsung chips as opposed to toshiba? i was always very skeptical of them :/
Well, the old Samsungs suffered from pretty heavy degradation issues or so I've heard but that was something like 2008. A lot has happened in SSD world since that.
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Old Feb 6, 2011, 02:18 PM   #25
PBF
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Ultimate MacBook Air 13 (bought yesterday):

180.9 / 207.7

Revision: CJAA0201

So it turns out I was sold an older revision, right? That's why it's slower, right? I'm mad!!!

Should I have asked the sales person to pull out the latest revision? Is it even possible to identify one?
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