[OSX-Users] Re: New 2015 MacBook

Fri May 22 13:06:04 BST 2015

There's the risk of an overheating 5W power supply though...

On Friday, May 22, 2015, Hugh Davis <hcd at soton.ac.uk> wrote:

> Ok - 29W is not so big - my current MacBook Air transformer is 45W , so
> presumably this is  lighter.
>
> Charging off 5W would he slow -  but not necessarily useless. A useful
> trick Dder once showed me was that you can run a MacBook off a 12V power
> supply using the now unavailable 24V airplane charger. It does not charge
> the MacBook but it stops it discharging with use.  This is really useful if
> you spend lots of time in a car or campervan without access to 240V
> supplies e.g at a festival!
>
> ========
> Hugh Davis
> Sent from my iPhone so please excuse typos.
> Co-ordinates at http://users.ecs.soton.ac.uk/hcd/
> My calendar is at http://users.ecs.soton.ac.uk/hcd/hcdcal.html
>
>
> On 22 May 2015, at 12:37, Jules Field <Jules at ecs.soton.ac.uk
> <javascript:;><mailto:Jules at ecs.soton.ac.uk <javascript:;>>> wrote:
>
> The MacBook comes with a 29W USB-C charger. Your usual USB power supplies
> are only 5W, or at most 12W in the case of newer iPad models. It would take
> one a *very* long time to charge a MacBook at 5W.
>
> Jules.
>
> On 22/05/2015 11:58, Hugh Davis wrote:
> But presumably that means an enormous heavy transformer, which rather
> defeats the purpose!
>
> /h.
> Hugh Davis
> Professor of Learning Technologies
> Director of Institute for Learning, Innovation and Development (ILIaD)
> Tel:  +44 (0)23 8059 3669
> Building 32 Room 3045
> Highfield Campus, University of Southampton, SO17 1BJ, UK
> Co-ordinates at http://users.ecs.soton.ac.uk/hcd/
> My calendar is at http://users.ecs.soton.ac.uk/hcd/hcdcal.html
>
>
>
>
> On 22/05/2015 11:13, "Steve Harris" <steve at totl.net <javascript:;><mailto:
> steve at totl.net <javascript:;>>> wrote:
>
> Yes, the new MacBooks are charged over USB-C.
>
> USB-C can carry 100W, so in theory lots of things could run off USB-C in
> the future. Itąs enough power to run a 50˛ TV.
>
> On 22 May 2015, at 10:54, Hugh Davis <hcd at soton.ac.uk <javascript:;>
> <mailto:hcd at soton.ac.uk <javascript:;>>> wrote:
>
> I saw a few reviews suggesting that the CPU power would be a downgrade
> on existing MacBook airs.
>
> Iąm not sure that CPU speed is ever an issue for the sort of activities
> I undertake  its usually been disk speed,  and even that seems to have
> been an insignificant problem since I got SSD or hybrid disks.
>
>
> ALSO
> Still slightly worried about the single USB C slot.  In effect I have
> to always remember to carry around some extra device in order to charge
> my iPhone from my PC. when its charging?
>
> And Finally.
> It would be nice if they produced a PC that could be charged from a USB
> supply as an iPad can!  I presume this is not the case here?
>
> Any thoughts.?
> /h.
>
>
> Hugh Davis
>
> Professor of Learning Technologies
>
> Director of Institute for Learning, Innovation and Development (ILIaD)
>
> Tel:  +44 (0)23 8059 3669
>
> Building 32 Room 3045
>
> Highfield Campus, University of Southampton, SO17 1BJ, UK
>
> Co-ordinates at http://users.ecs.soton.ac.uk/hcd/
>
> My calendar is at http://users.ecs.soton.ac.uk/hcd/hcdcal.html
>
> From: Jules Field <Jules at ecs.soton.ac.uk <javascript:;><mailto:
> Jules at ecs.soton.ac.uk <javascript:;>><mailto:Jules at ecs.soton.ac.uk
> <javascript:;>>>
> Organization: University of Southampton
> Reply-To: List for users of Mac OS X
> <osx-users at ecs.soton.ac.uk <javascript:;><mailto:osx-users at ecs.soton.ac.uk
> <javascript:;>><mailto:osx-users at ecs.soton.ac.uk <javascript:;>>>
> Date: Friday, 22 May 2015 11:39
> To: List for users of Mac OS X
> <osx-users at ecs.soton.ac.uk <javascript:;><mailto:osx-users at ecs.soton.ac.uk
> <javascript:;>><mailto:osx-users at ecs.soton.ac.uk <javascript:;>>>
> Subject: [OSX-Users] Re: New 2015 MacBook
>
> All models have 8GB RAM.
>
> 256GB ssd and 1.1GHz cpu = Ł902
> 256GB ssd and 1.3GHz cpu = Ł1074
>
> 512GB ssd and 1.2GHz cpu = Ł1117
> 512GB ssd and 1.3GHz cpu = Ł1220
>
> Then you'll want an AV multiport adapter (either HDMI or VGA version) =
> Ł65
> That provides a USB-C socket (so you can charge while showing a
> presentation), normal USB, and either HDMI or VGA.
>
> So top-of-the-range = Ł1285 for the package. But I'm not convinced the
> 1.2GHz->1.3GHz upgrade is worth having, so you could knock roughly Ł100
> off that.
>
> All prices include VAT.
>
> One thing I have noticed is quite how fast the SSD is. Installing my
> 30GB system image from a USB disk takes 3 minutes, compared to 6 minutes
> for a MacBook Pro Retina and over 20 minutes for a "spinning rust"
> disk-based Mac.
>
> Hope that helps,
> Jules.
>
>
> On 22/05/2015 10:26, Tim Chown wrote:
> So whatąs the damage for one of those?
>
> Tim
>
> On 21 May 2015, at 15:21, Jules Field
> <Jules at ecs.soton.ac.uk <javascript:;><mailto:Jules at ecs.soton.ac.uk
> <javascript:;>><mailto:Jules at ecs.soton.ac.uk <javascript:;>>> wrote:
>
> If anyone would like to see one in the flesh, I've got one in my office
> you are welcome to come and look at.
> Zepler 4211, by the lift.
>
> - Weight under 1kg (lighter than MacBook Air)
> - Thinner than the MacBook Air
> - Brand new keyboard
> - Force Touch trackpad
> - No fans, no moving parts at all (even the keys only *just* move)
> - 10 hours battery life
> - 1.1/1.2/1.3GHz Core M cpu
> - 8GB RAM
> - 512GB SSD storage
> - Retina display (12", 2304x1440 pixels)
>
> Jules
>
> --
> Jules Field MEng MBCS CITP CEng
> email+iMessage: Jules at ecs.soton.ac.uk <javascript:;><mailto:
> Jules at ecs.soton.ac.uk <javascript:;>><mailto:Jules at ecs.soton.ac.uk
> <javascript:;>>
> Twitter: @JulesFM
>
> Senior Tutor, Postmaster
> Electronics and Computer Science
> University of Southampton SO17 1BJ, UK
>
>
>
>
>
> Jules
>
> --
> Jules Field MEng MBCS CITP CEng
> email+iMessage: Jules at ecs.soton.ac.uk <javascript:;><mailto:
> Jules at ecs.soton.ac.uk <javascript:;>><mailto:Jules at ecs.soton.ac.uk
> <javascript:;>>
> Twitter: @JulesFM
>
> Senior Tutor, Postmaster
> Electronics and Computer Science
> University of Southampton SO17 1BJ, UK
>
> 'There is silent poetry in the stillness of morning;
> in the calm, the cries & sighs of life sound like gentle music.'
> - @Astro_Wheels
>
>
>
>
>
>
> Jules
>
> --
> Jules Field MEng MBCS CITP CEng
> email+iMessage: Jules at ecs.soton.ac.uk <javascript:;><mailto:
> Jules at ecs.soton.ac.uk <javascript:;>>
> Twitter: @JulesFM
>
> Senior Tutor, Postmaster
> Electronics and Computer Science
> University of Southampton SO17 1BJ, UK
>
>
>
>
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