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There appears to be confusing and incomplete information about the PCIe SSDs in mid-2013 MacBook Air 11" and 13" (especially the 128GB models), where a different queue depth may result in different speed test results. http://www.anandtech.com/show/7085/the-2013-macbook-air-review-13inch/8

In simple terms, how how much slower is swap on the 128GB PCIe SSD compared to the main memory on the 4GB LDDR3 in the mid-2013 MacBook Air 11" and 13"? What about 256GB?

I cannot really find any comprehensive comparison on the topic specific to the proprietary SSDs used by Apple in mid-2013 MacBook Air, especially comparison between 128GB and 256GB models. A good answer would include methodology through which it's derived.

  • what is the purpose of your question other then wanting to know? – Ruskes Apr 30 '14 at 7:51
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    @Buscar웃, to make a decision whether 8GB of LPDDR3 is worth it, or if 4GB would suffice; to see if upgrading to 256GB drive would make sense instead etc. – cnst Apr 30 '14 at 13:53
  • Going from the 256 and 8 is the best, now it is a question of budget. The only measurable difference (to us humans) is when the SWAP has to be used. The size does matter! so a larger SSD is better if you have a lots of stuff. (but that is purely personal decision). Your first bottleneck is your RAM. – Ruskes Apr 30 '14 at 14:20

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