I’ve been promising myself for some time now that – as my current MacBook Pro has started to fall to pieces after three year’s perfect service – I would upgrade to a lighter, much more portable MacBook Air as soon as they received a Sandy Bridge processor update.
There is a nice overview of the available options at TechonoBuffalo, whilst MacWorld and Bare Feats are the first places I’ve seen with useful(*) benchmarks. Furthermore, the ever-reliable Storage Review has an interesting set of figures for the (excellent) performance of the new Blade SSDs.
However, what I’ve been unable to find elsewhere (and even wikipedia isn’t overly useful, in this case) is any quantitative comparison of the two MacBook Air processor options: For the 128GB 11″ model, the Core i7 processor is a £150 (~15%) extra for – on the face of it, a 200MHz (a fifth of an iPhone 4 or iPad, or 12.5%) speed increase.
There must be more of an advantage, surely?
As it turns out, the answer is yes and no…
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Feb 13 2015
Determining Gentoo CPU_FLAGS_X86
Gentoo have recently taken the positive step of removing Intel-specific USE flags from builds directly, and introducing the new ‘CPU_FLAGS_X86‘ variable to control platform-specific hardware options.
(Presumably this opens the option for extensions such as ‘CPU_FLAGS_ARM="neon"‘, etc., in the future also…)
There is a new build app-portage/cpuinfo2cpuflags which will determine this information – but really, this feels like something that we can figure out canonically for ourselves without needing to pull-in additional packages 😉
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By Stuart • Apple, Technology, UNIX 1