_hypx

10 ms·

121.
by _hypx 3y ago
I suspect CPUs in the future will do away with hyperthreading/SMT. There are just too many cores, and more importantly heat is the limiting factor. We will just have much more advanced clock throttling/boosting behavior, with the
122.
by _hypx 3y ago
Hydro is energy storage. It incurs losses. It also requires you to have hydropower.
123.
by _hypx 3y ago
Except you are ignoring energy storage losses for BEVs. Take that into account and it drops to the same level as doing it with hydrogen. It also helps to stop living in the past with hydrogen. Efficiencies are significantly better than you
124.
by _hypx 3y ago
That isn't biofuel. That's synthetic fuel.
125.
by _hypx 3y ago
Growing food and converting it to fuel is not carbon neutral. Farming is very resource intensive at the scales needed. In fact, it is literally the same idea as carbon capture, but via biology instead of synthetic. As a result, it is entire
126.
by _hypx 3y ago
BEVs are the biggest example of greenwashing today. You will need a vast increase in raw material demand and it is arguably completely unsustainable. Especially once you realize that we are making battery powered SUVs. In reality, people ar
127.
by _hypx 3y ago
Biofuels are fundamentally not green. You might as well suggest we use fossil fuels forever.
128.
by _hypx 3y ago
With renewable energy, you will have to deal with intermittency too. That requires energy storage and more transmission losses.
129.
by _hypx 3y ago
This entirely ignores the problem of intermittency. The wind does not blow all the time and the sun does not shine all the time. To solve this, you will need grid energy storage. The problem is that adds significant energy losses for a hypo
130.
by _hypx 3y ago
Factually no. There is no straightforward method of taking energy from renewable sources and getting it to a charging station. In reality, this is one of the hardest parts of green energy. You simply have to ask the question, "what hap
131.
by _hypx 3y ago
That has nothing to do with the subject at hand. You cannot charge a battery at 100% efficiency, especially from the source electricity. People are simply creating an apples-to-oranges comparison here. You're just distracting from this
132.
by _hypx 3y ago
You cannot magically put electricity directly into the battery. There is a significant loss between production and powering the wheels. This is the biggest source of misunderstanding about the subject.
133.
by _hypx 3y ago
Because a lot of people in SV agree with him. There’s a huge dark side to Silicon Valley.
134.
by _hypx 3y ago
The problem is that we have conflated BEVs with all EVs. There is more than one way of making EVs. Most of the problems of EVs will go away once we realize that. But until then, we are stuck in a fantasy that BEVs is the only solution or th
135.
by _hypx 3y ago
Stop repeating BEV propaganda. There are real reasons why BEVs can't work. By suggesting that oil companies are behind these criticisms is a conspiracy theory. Once you realize that those problems you brought up don't have magical
136.
by _hypx 3y ago
Most freight trains are diesel. Electric trains are usually passenger lines in dense areas. Also, this is direct electrification, so they just use the grid. But batteries imply another separate infrastructure on top of that. If batteries co
137.
by _hypx 3y ago
There are only two answers for planes: Hydrogen or synthetic fuels. That is because weight is the overwhelming critical factor for planes. And batteries are about 100x too heavy for this purpose. No amount of handwaving can get around that
138.
by _hypx 3y ago
Hydrogen powered vehicles will approach 100% of all transportation. That is because it is the only that scales across all sectors, as well as being the only one that is really sustainable. Even things like methanol or syn-fuels will be made
139.
by _hypx 3y ago
Agreed. Like I said elsewhere, we have conflated EVs with the BEV. We are demanding a one-size-fits-all, even when its impossible or too expensive. This is doomed to failure and there must be more flexibility.
140.
by _hypx 3y ago
This is why the entire plan is totally ridiculous and ultimately doomed. There is no flexibility on any level. No hybrids, PHEVs, hydrogen cars, etc. Just demanding everyone to look exclusively at BEVs and only BEVs.
141.
by _hypx 3y ago
The fundamental problem is that we have conflated the EV with the BEV . These are not the same thing. But because we have done that, we've created a car market that is something akin to what we saw in the Communist bloc. Basically, th
142.
by _hypx 3y ago
TSMC is not untouchable. If they really drop the ball on yields, someone else will gain marketshare.
143.
by _hypx 3y ago
When the battery dies, the replacement cost will exceed the value of the car itself. As a result, used BEVs that have gone past the warranty period are basically disposable cars. This is much worse than ICE cars that can be repaired. In rea
144.
by _hypx 3y ago
Battery powered cars pre-date ICE cars. Every car company can make one with no difficulty at all. The real challenge is moving past just putting a giant battery into every car, which is a huge waste of money and resources. It is Tesla that
145.
by _hypx 3y ago
That’s a ridiculous statement. Hydrogen fuel cells will eventually power all cars.
146.
by _hypx 3y ago
> The uninstalled capital cost of proton exchange membrane (PEM) electrolyzer systems has been reduced by over 90% since 2001 (and 80% since 2005) https://www.hydrogen.energy.gov/pdfs/22002-historical-cost-r...
147.
by _hypx 3y ago
For those totally unelectrified sections, you need something like hydrogen trains. This allows you to go hundreds of miles without power. But battery trains require catenaries at both ends for charging anyways. And the limited range of batt
148.
by _hypx 3y ago
I didn't say they didn't exist. But there's very little need for them. The wiki article itself makes this pretty clear that they are rarely needed.
149.
by _hypx 3y ago
A rare event. And the solution is to keep these unpowered sections short. Not spend millions on a fleet of battery powered trains.
150.
by _hypx 3y ago
The only scam here is the battery train. You can simply electrify the rail lines fully and eliminate all battery needs. That is the obvious solution. At least hydrogen makes sense for rail lines with no electrification.

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