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Comment I trust them to do the right thing (Score 1, Interesting) 219

I've already seen a bunch of posts mourn the whole bunch of addons that will stop working end of this year. Probably, I'll lose some myself.

But personally, I trust Mozilla to do the right thing here. They've probably weighed the pros and cons, and made their decision. I'll see what the end result is. There's enough browsers to choose from nowadays.

Firefox has some unique things why I use it, first and foremost "search in links". Try it, tap the single-quote key and type text that appears in a link. Then hit enter. It's the fastest way to surf the web without a mouse.

But if end of this year comes and it turns out they screwed it up, fine -- I'll go and use another browser.

Comment Time (Score 1) 197

For some reason, I simply don't make the time to really dive into certain subjects. With a conference, I often come to the US and leave the family in Europe. So there's nothing else that draws away the focus. Lots of times with iOS conferences, you can book a day with an intensive workshop before the talks start, and that's really nice as well.

Comment Re:Walk before you run (Score 1) 267

The GFXBench test is largely irrelevant as that is testing the GPU, not the CPU.

Yes, if we're talking about the CPU then it's not relevant.

However for real world usage in a laptop, it's very relevant. The current crop of 15" MacBook Pros has a discrete GPU. Why? Because Intel's integrated GPU can't handle big external 4K or 5K displays. The discrete GPU sucks up the battery so obviously you'd rather the integrated GPU handles everything. But from what I understood, Intel no longer has a clear roadmap for their integrated GPU. With the A9X chips showing they easily beat Intel's Iris/HD stuff, I hope this lights a fire under Intel's butt.

A9X has nearly double the raw clock speed, and barely beats intel on one test, but loses on the others. This isn't exactly a roaring endorsement.

You can't compare clock speeds like that. What it comes down to, is what can it do within the thermal envelope.

Comment Re:Walk before you run (Score 1) 267

And it is an m-processor that has been intentionally crippled to be slow and use little power.

What do you mean crippled? It's a fine CPU for the thermal constraints of the 12" retina Macbook.

If you're saying that the A9X can only keep up with an m-processor, and not with Intel desktop class stuff, then sure I totally agree.

Comment Re:Walk before you run (Score 5, Interesting) 267

ARM has only been doing 64-bit out-of-order execution and branch prediction for two generations

In a single-core benchmark, Apple's A9X @ 2.25 GHz already defeats Intel's 1.3 GHz Core M7 CPU.

The idea is not to compete with a desktop Xeon but instead, to nibble at Intels feet at the bottom end. Check out this 2016 benchmark between the 12" MacBook (Intel @ 1.3 GHz) and the 12.9" iPad Pro: http://barefeats.com/macbook20...

GeekBench 3 single-core, higher is better:
MacBook Intel @ 1.3 GHz: 3194
iPad Pro: 3249

GeekBench 3 multi-core, higher is better:
MacBook Intel @ 1.3 GHz: 6784
iPad Pro: 5482

GFXBench Metal, more FPS is better:
MacBook Intel @ 1.3 GHz: 26.1 FPS
iPad Pro: 55.3 FPS

JetStream javascript benchmark, higher is better:
MacBook Intel @ 1.3 GHz: 175.68
iPad Pro: 143.41

Comment Re:Why (Score 1) 201

Adiabatic compressed air energy moves the heat from compression into an insulated thermal mass chamber, and uses that to heat the expansion vessel. It recouperates that loss and has 70% total effective energy storage--higher is possible, up to 90%.

The way you describe it sounds not at all like an adiabatic (no heat exchange) process but rather like a thermodynamically irreversible process. Maybe you mean an isothermal process?

And from https://en.wikipedia.org/wiki/... :
"real compressors and turbines are not isentropic, but instead have an isentropic efficiency of around 85%, with the result that round-trip storage efficiency for adiabatic systems is also considerably less than perfect."

Wikipedia doesn't say so much about isothermal compression in practice, but it sounds to me like practically infeasible to reach your 70-90% roundtrip efficiency. You'd need an enormous thermal mass that doesn't change much in temperature despite 1/3 or so of the energy being stored as heat, you need enormous heat exchangers to transfer the heat with negligible temperature differences, and your compressors and decompressors need to have a very high efficiency.

Comment Re:What bugs me about USB power (Score 1) 152

IMHO: A USB device that depends on its power source to limit its input current, and can be damaged by a host that is willing to deliver more current that it requested, is defective by design.

Current limiting is to protect the supplier of the current. Bad current negotiation can damage the power supply, so of course the power supply should limit the current. A bad power supply may break, though. I think the main problem is that USB-C can use a range of voltages and a 5 V device plugged into a 20 V power supply will blow up the device unless the 20 V supply is signaled to throttle back to 5 V.

But maybe I misunderstand. Unfortunately, the reporting about this topic (Leung's findings) is very fuzzy about what happens exactly. But I don't see any scenario where connecting a good quality 5V, 1A or 2A charger to any USB-C device can lead to damage.

Comment There's a reason (Score 4, Insightful) 97

Ninety percent of all bad reviews was about the fact that a crash occurred if you connected/disconnected with the lid closed.

They fixed that bug in the latest macOS update. It came out yesterday. Basically all the reviews wouldn't make sense anymore.

I'm not saying it's a good reason, but I'm guessing that's the thinking in the apple mothership.

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