zimmie

titantiger said:

mjtomlin said:

So we’ll be back to WIntel emulation. Will be interesting to see what types of performance these types of applications can pull off.

tjwolf said:

Ok, I don’t get it.  I watched the keynote and could have sworn that I saw Parallels Desktop being run on their ARM Mac to show Linux running...or did I imagine that?

That was a beta version of Parallels recompiled for Apple Silicon, runnning an ARM-based version of Linux.

Right, so if Parallels has been recompiled for Apple Silicon, couldn't it then run Windows in a VM?

To expand on what has been said, there is a bit of confusion regarding processor ISAs (instruction set architectures) and just what virtualization is.

Think of processor ISAs like languages. Intel's processors speak what is called x86, x86_64, or amd64. Apple's processors speak what is called AArch64, or ARMv8-A. Valid commands for one are just gibberish for the other.

Operating systems are like supervisors in a company (in fact, "supervisor" is the technical term for a core part of an operating system). Processes within the operating system are the employees.

In a small company, everybody has to speak the same language.

Now, emulation is like a translator who speaks two languages. Let's say you have an office in the US, and hire a freelancer in Brazil who doesn't speak English. You need a translator who speaks English and Brazilian Portuguese to let you work effectively with this freelancer.

Rosetta 2 will let you run x86 processes (our Brazilian freelancer) with a supervisor who speaks AArch64 in the US.



Virtualization is upper management. It lets you have one supervisor-of-supervisors (called a hypervisor), which lets you run multiple supervisors all doing different things. They all still have to speak the same language, though.

Now, let's say you have five offices in the US and want to open a whole branch office in Brazil (again, let's say nobody at the proposed office speaks English). A translator could potentially sit between the supervisor in the Brazil office and the upper manager over all the offices. This is sort of what VirtualPC (and a few other, similar programs) did back before Apple moved to Intel processors.

Apple's clarification here is that Rosetta 2 won't translate between a supervisor in Brazil (x86) and upper management in the US (AArch64).

This bolt would definitely be weaker than a solid-metal bolt. That doesn't really matter, though, because it's still far stronger than the door frame.

Assuming someone is trying to breach the door in the direction it normally opens (e.g., kicking a door which opens inward), the weakest link in most deadbolt systems is the screws securing the strike plate to the frame. A lot of installers seriously cheap-out here and use screws only 1" or so long. Next is the strength of the frame itself If you have good screws, they can still rip out of (or through) a weak frame.

If someone is trying to breach a door against the direction it normally opens, they might try to saw the bolt, but that's generally a huge waste of time. The real goal of locks is to make attempts to bypass them as noticeable as possible, and few things are as noticeable as someone trying to saw through a deadbolt. You have to either make a lot of noise, or sit there sawing slowly for a long time.

Amusingly enough, this bolt would actually give better resistance to sawing than a normal, solid-metal bolt. High-security deadbolts have hardened steel rollers inside them in voids which let the roller spin. The idea is once a saw breaks through the solid part of the deadbolt, it hits a roller and can't progress further, as the roller just spins. The battery in this bolt can roll. It's softer than the steel rollers in high-security deadbolts, so it wouldn't last as long, but it should do well enough.

libertyforall said:
So you can do different phone numbers on different networks, but you can’t switch between cellular data networks on iPhone?!  Time to lobby Apple for that feature then!:  https://www.apple.com/feedback/iphone.html

JackyChan said:

Too bad there is no network switching for iPhones so if you have an iPhone you’re just buying a TMobile account when you get Google Fi. 

It's a Google limitation. Any phone using Google Fi which isn't "Designed for Fi" only gets service from T-Mobile in the US.

Toho72 said:

So, I am here to seek guidance on purchase for my teen daughter (first Mac ever), unfortunately I cannot wait. She has to do minor video editing (Iphone footage). 

Hope anyone can help or guide me to a side to a side to aske below question:

Question:  I wonder if we should go for MBA and upgrade to I7 + 16 GB to get decent performance? The price tag gets close to the MBP (In Denmark). But is this a duable road to take? or too odd ?  
Thanks

Definitely go for the 16 GB of RAM, but I wouldn't bother with the i7. Due to the way Intel's processors work, an i7 is very rarely worth the upgrade over an i5 in the same machine. Intel's processors adjust their clocks dynamically based on their temperature and how many things they are doing. That is the Turbo Boost speed listed on the spec sheets. The catch is they can only maintain this speed while they have enough cooling. As they get close to their thermal limits, they slow down to avoid overheating.

The MBA's cooling system has significantly less capacity than the two TB3 MBP's. While the tenth generation processors are a bit more efficient, it's not a big enough difference to make up for that big a change in the cooling system. Going from the i5 MBA to the i5 MBP will provide a bigger speed boost than going from the i5 MBA to the i7 MBA or the i5 MBP to the i7 MBP.

Both the MBA and the MBP have Apple's T2, which handles hardware-accelerated AVC and HEVC encoding and decoding. They will both be great for basic video editing for the foreseeable future.

The big metal blocks to the sides of the trackpad aren't reinforcement, they're weights. Just metal slugs to affect the balance so the much-heavier iPad mounted on the top doesn't make the whole thing tip over.