[OSX-Users] Re: New 2015 MacBook

Fri May 22 12:52:14 BST 2015

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<mailto:Jules at ecs.soton.ac.uk>> 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<mailto:steve at totl.net>> 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. It¹s enough power to run a 50² TV.

On 22 May 2015, at 10:54, Hugh Davis <hcd at soton.ac.uk<mailto:hcd at soton.ac.uk>> wrote:

I saw a few reviews suggesting that the CPU power would be a downgrade
on existing MacBook airs.

I¹m 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<mailto:Jules at ecs.soton.ac.uk><mailto:Jules at ecs.soton.ac.uk>>
Organization: University of Southampton
Reply-To: List for users of Mac OS X
<osx-users at ecs.soton.ac.uk<mailto:osx-users at ecs.soton.ac.uk><mailto:osx-users at ecs.soton.ac.uk>>
Date: Friday, 22 May 2015 11:39
To: List for users of Mac OS X
<osx-users at ecs.soton.ac.uk<mailto:osx-users at ecs.soton.ac.uk><mailto:osx-users at ecs.soton.ac.uk>>
Subject: [OSX-Users] Re: New 2015 MacBook

All models have 8GB RAM.

256GB ssd and 1.1GHz cpu = £902
256GB ssd and 1.3GHz cpu = £1074

512GB ssd and 1.2GHz cpu = £1117
512GB ssd and 1.3GHz cpu = £1220

Then you'll want an AV multiport adapter (either HDMI or VGA version) =
£65
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 = £1285 for the package. But I'm not convinced the
1.2GHz->1.3GHz upgrade is worth having, so you could knock roughly £100
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 what¹s the damage for one of those?

Tim

On 21 May 2015, at 15:21, Jules Field
<Jules at ecs.soton.ac.uk<mailto:Jules at ecs.soton.ac.uk><mailto:Jules at ecs.soton.ac.uk>> 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<mailto:Jules at ecs.soton.ac.uk><mailto:Jules at ecs.soton.ac.uk>
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<mailto:Jules at ecs.soton.ac.uk><mailto:Jules at ecs.soton.ac.uk>
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<mailto:Jules at ecs.soton.ac.uk>
Twitter: @JulesFM

Senior Tutor, Postmaster
Electronics and Computer Science
University of Southampton SO17 1BJ, UK