802.11ac ▪ December 31, 2014

802.11ac ▪ September 25, 2014

Following rumors of a possible Mac mini refresh earlier this year and references on Apple’s own website, a new report says Apple could introduce an update to the product as early as next month. MacRumors cites a source that has provided accurate tips in the past claiming the new Mac mini could launch alongside new iPads and OS X Yosemite expected at an event in October. expand full story

802.11ac ▪ January 22, 2014

802.11ac ▪ September 3, 2013

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MacRumors is citing low stocks of Airport Express base stations as suggesting that a faster 802.11ac model is expected soon to match the capabilities of the latest Macs. This would offer wifi speeds almost three times faster than current 802.11n models, a capability that has already been incorporated into the current Airport Extreme and Time Capsule models.

We’re also hearing similar whispers about constrained supplies of iMacs, alongside price-cuts by resellers …  expand full story

802.11ac ▪ July 22, 2013

802.11ac ▪ June 24, 2013

In its extensive review of the new 2013 MacBook Air, AnandTech notes an issue with the machine’s new 802.11ac WiFi capabilities that it says is limiting the faster Wi-Fi chip’s potential. While it was able to get an average of 533Mbps using the iPerf networking tool, Anand found real world file transfers would only get 21.2MB/s or 169.6Mbps:

I disabled all other wireless in my office. Still, no difference. I switched ethernet cables, I tried different Macs, I tried copying from a PC, I even tried copying smaller files – none of these changes did anything. At most, I only saw 21.2MB/s over 802.11ac. I double checked my iPerf data. 533Mbps. Something weird was going on. I plugged in Apple’s Thunderbolt Gigabit Ethernet adaptor and saw 906Mbps, clearly the source and the MacBook Air were both capable of high speed transfers. What I tried next gave me some insight into what was going on. I setup web and FTP servers on the MacBook Air and transferred files that way. I didn’t get 533Mbps, but I broke 300Mbps. For some reason, copying over AFP or SMB shares was limited to much lower performance. This was a protocol issue.

According to the review, the problem is likely with the OS X networking stack that is for some reason artificially limiting the capabilities of 802.11ac: expand full story

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