Freeman

It's a technique called Pulse and Glide and it does work to save fuel. As far as I know, in some countries it's not allowed because the uneven speed makes it harder to drive in a motorway, with people constantly coasting and accelerating.
 

 
Efficiency just depends on the engine and operating conditions of the engine. The chart above tells you that this particular engine has an optimal RPM/Torque at which it gives the best efficiency from chemical potential energy to mechanical energy. The further away, the lower the efficiency.
 
So rather than driving at a constant speed maybe in the yellow region, it's more efficient to operate the engine in a burst in the red region, then coast, then burst again and repeat.
 
This chart also tells you the best efficiency you get 40H to 80HP, and if you want the best acceleration instead you can operate at the peak where the engine is giving you 124HP, which is where you are at high RPM, and the engine is giving you high torque. (Power = torque*rpm*conversion constant)

In WAN show on 12th April at around 3rd hour, Linus and Luke talk about light acceleration being more efficient than stronger acceleration. This is a very common misconception, that I've encountered way to often, when working in this field.
 
Engines work optimally at optimal load, which, for ICE engines, is close to full load. For electric motors, it varies greatly based on design.
 
For optimal efficiency and best fuel mileage, you'd want to accelerate at near full load in highest gear, until reaching the revs where the friction of the piston against the the cylinder causes too much drag and a speed where the wind resistance causes too much drag.
 
In fuel mileage competitions, when a driver reaches this speed, they shut off the gas and let the kinetic energy turn the engine, or they just switch the engine off and shift into neutral, if they can save more fuel than what it takes to start the engine.
 
I'm not saying anybody outside a competition should drive like this, that would be horrible, but don't feather that gas pedal either. Keeping the engine at minimal load all the time won't help it and you are not winning on efficiency either.

In WAN show on 12th April at around 3rd hour, Linus and Luke talk about light acceleration being more efficient than stronger acceleration. This is a very common misconception, that I've encountered way to often, when working in this field.
 
Engines work optimally at optimal load, which, for ICE engines, is close to full load. For electric motors, it varies greatly based on design.
 
For optimal efficiency and best fuel mileage, you'd want to accelerate at near full load in highest gear, until reaching the revs where the friction of the piston against the the cylinder causes too much drag and a speed where the wind resistance causes too much drag.
 
In fuel mileage competitions, when a driver reaches this speed, they shut off the gas and let the kinetic energy turn the engine, or they just switch the engine off and shift into neutral, if they can save more fuel than what it takes to start the engine.
 
I'm not saying anybody outside a competition should drive like this, that would be horrible, but don't feather that gas pedal either. Keeping the engine at minimal load all the time won't help it and you are not winning on efficiency either.

It would be very nice to have a written version of this video. This was a very nice compilation of quite a lot of useful advice.

Yes, correct. They are on XBFS.

sp_s.cfg, smc_s.cfg and certkeys.bin is the config from the donor.

Also, about the console ban:

This XDK I have was banned permanently on Xbox Live since the ID@Xbox team the console was managed by reported it as lost.
However, after playing around with fire and partially burning savings in this ridiculously fun project, along with the advice from TitleOS (a very known Xbox security researcher) who kind of gave me some clues on what to do, I decided to reflow the Xbox's APU with the one of a retail Series X, and after fiddling here and there, removing the developer certificate, copying the Security Processor (SP) certificate from the donor's console and facing countless boot errors because SMC mismatch, I managed to boot in retail mode and afterwards in DevMode with a new UWA Devkit developer certificate.

However, the ODD (Optical Disk Drive) paid the price of it since it was no longer authorized by the SP.  Good fun times!

Hey all, just giving an update on this. We reached out to Volta, had them pull this video segment as it was done without our permission, and we won't be sponsoring with them until their distribution issues have been resolved. They're shipping the product out now in batches, with 3000 more of the chargers arriving at their offices soon. Our contact said everyone should receive their GIGA charger by the end of the month, so we are going to keep an eye on this and how they continue to support their customers ahead of resuming any partnerships with them. 
 
As @CPotter said, Volta was a long term partner of ours, and we just were recently made aware of these issues with distribution and customer support. Thanks so much to @nutzaalex for bringing this to our attention so we could get it taken care of. The trust you guys place in us is super important, so we want to make sure we're dealing with stuff like this as soon as it comes up. Appreciate you all! 

Hey!
 
Apologies, we didn't see this or the original thread. This video and its use was NOT sanctioned by our team. We've been working with VOLTA since 2017, and haven't seen or heard any issues around their products or delays until recently.
 
@SeanLMGis messaging them and their founder now, and we'll be pausing any sponsorships with them until they get these issues resolved.

Everyone! 

Thanks for bringing this up. We decided to remove the Nikon Z9 video due to the glaring issue regarding the specific auto focus mode that was never tested, which ultimately lead to the wrong conclusion. We weren't able to simply fix it by our typical methods or refilm as the loaner camera was sent back after the video was released for retesting and posting a new video. 
 
We're going to develop a few new ways to address we don't run into this issue again, but thanks for your patience with us on the matter.

I'm really not sure how a video confusing "open source" with "open hardware" gets past any final reviews if you conducted a 5 hour interview with the "founder" of the Open Compute Project.  Making a false claim in a video that "The entire project is open source" really isn't a great look for LTT.  The project is open hardware, but not entirely open source in its current state.  That's a major misstep in communication of the proper factual information to your audience that I would strongly urge LTT to correct.

12:44 (timestamp)
"...and since again the whole project is open source anyone can implement it and change it however they want."

Open source means that the source code is readable, but it says nothing about the right permits to other users.
Are you allowed to use that code yourself, are you allowed to modify the code, to distribute the original and the modifications?

This is where the licenses come in.
Although, the license that the project comes with DOES permit those things, it's the MIT license, so that's okay, but still - a bit weirdly said.

P.S. I hope they switch to one of GPL licenses though o.o

At 48.8 billion years, the half life of Rubidium 87 isn't particularly short. So a banana is way more radioactive to say the least.
The atomic clock part doesn't even care about the radioactivity, but rather the fact that Rubidium has a convenient absorption band at 6 834 682 610.904 Hz (about 6.8 GHz)
Ie, send in a continuous RF wave at that frequency, and it will get attenuated fairly noticeably, be slightly off by a few fractions of a Hz, and the attenuation reduces noticeably. The impressive thing with these standards is how they know what direction they skirted off at, after all, the VCO running the show isn't an atomic clock in itself, just carefully balancing on a needle.
 
Though, normally one wouldn't have an atomic clock for each computer, but rather one central one and then simply distribute the reference signal to all of them. And this might sound hard, but depending on how far one has to send the signal and the quality of one's cabling it can be fairly trivial.
 
I also do have to argue against a lot of the "examples" at the end.
Gaming were honestly one of the most true examples where it would have a minor impact. (But no reason to use an atomic clock for that, considering how game loops aren't sub ms as is... A good oscillator and the occasional high accuracy ping can get your system clock to within a few µs with fairly bog standard network equipment.)
 
Using timing of packages to detect the failure of fiber repeaters on the ocean floor might sound like a cool application. Or one can just look at the phase shift between different fibers in the lump. Send a pair of packages down them and you know how far apart they normally appear on the other side, if this changes, then you know that something has changed. The time stamps of the packages themselves doesn't matter in the slightest. Or one can just bring down the fiber and light up a dark one and simply do a bit of round robbing testing them on a daily basis. And it isn't like fishing boats trawls straight through ocean fiber cables on a monthly basis as is, so they need to be pulled up and repaired regardless. (Fishing boats ripping up fiber cables isn't that super common, but it does happen every now and then. But there is a lot of fiber cables on the ocean floor, so in the grand scheme it isn't a major disruptor, but surely an interesting catch non the less.)
 
In regards to using fiber cables for gravitational waves, well. Network packages isn't that ideal as a medium. Here one would likely instead use a pure tone, ie, a single wavelength of light with no data modulated on top. (And there is such a fiber network in existence, that currently is a reference synthesized from some 400 atomic clocks all over the world, creating a time reference that is excessively accurate.)
 
Security is a hard one. Unless one owns the explicit route, then latency of a given link can vary by a good few hundred µs with ease for even relatively short distances. And this is plenty of time for some types of man in the middle attacks. (Though, good key exchange and proper encryption makes these attacks infeasible to start with. Especially if one sends the keys via a secure carrier (like on a thumb drive and simply transport it in person between the sites in need of secure communication. And yes, this is a thing that some companies, organizations and governments do, though hard drives stores more keys. (But, loose sight/control of the drive, and the keys are void, so send new ones until you succeed without ever loosing the drive out of your hands.)))
 
Streaming? Really....
"It should be possible to have much higher image quality and fewer chances of corruption occurring along the way" Just no... Basic data integrity and time stamping aren't really all that related. And a fair bit of stream corruption happens due to things outside of one's control. Like the streaming system getting overburdened for a few ms by a group of background tasks, or one's internet connection suddenly getting a flood of data down it by other devices on one's network leaving too little room for the stream to run smoothly. Or similar bandwidth issues on the ISP's end. Streaming is though suffering from fairly small buffering windows, meaning that any small interruptions in service quality will quickly provide negative results. Better time stamps doesn't solve any of that.
 
In the end, this isn't the first clock reference time stamping card I have seen. But normally one would just use an FPGA and an SMA input for some distributed reference clock. A simple 10MHz input and call it a day. After all, fairly pointless to have more than one or two (one as backup) atomic clocks for a whole building to be fair. (Though, distributing reference clocks of this nature isn't a trivial affair, but usually has some major advantages.)

Hi, software dev here first time.

I am confused. Routing of IP packages is not fixed over WANs, the distance and nodes are not clear hence you can also not predict how long it takes for one package to arrive on the other endpoint. While in a LAN this might have some advantages (in closed networks) even there collisions can happen, causing delays or dropped packages. In other words no matter how precise your clocks are running, the road have different speed limits and you often don't know which one is used or if the road is blocked entirely. So most examples brought in the video are just not applicable, because in practice you won't ever use timestamps (oh god, that's what people did in the 80ties/90ties) but concurrency tokens in combination with CQRS.

Or what am I missing here?

Even at $425 USD they're not really worth it in 2021. It's cool that they're about 79% cheaper than MSRP now, but that's for good reason.
 
Their IPC is about 30+% slower than 11th Gen Intel and Ryzen 5000, even with the extra cores/threads that's difficult to justify in niche workstation uses.
 
A 10900/K or 5900X would be much better all-round, and they're not even THAT much more expensive (+$63 for 10900, +$124 for 5900X).
 
Good quality AM4 and/or LGA1200 boards are easier to find than X99's for reasonable prices as well, plus there's no need to buy them used.

I genuinely didnt expect the Intel HEDT to fell off this bad. Jeez.
 
Whilst its cool and all, im very very surprised that we didnt talk about the heat output. At about 200W Peak for the same performance of the ryzen 3000 series that runs at 50W less, all the savings could just be burnt off solely from having to get a beefier cooler.
 
But i do see it in the case of high pcie lane usage as Linus eluded to. Its great to see for budget workstations, but in a value conscious normies? Yeah, still a no.

C'mon dude, you should know how this works - no one is asking you to do the packet sniffing or traffic captures yourself. But if you're aware of the situation, you should be able to fairly easily grab a source that did go through the research that confirms what you're saying.
 
You're effectively saying "do your own research". You made a claim, you back it up.
 
For the record, I wouldn't be surprised if you're right. But post a source that confirms it, or else it's just something some guy said on the internet.
 

True, but I think it's still important to report on it, both to make sure we don't forget about their plight, but also to make sure we don't go down the same way. It's crazy that I still do know people that think China is a great country we should learn from.

The recentl iPhone exploit discovered by Project Zero has apparently been utilized for more than two years by the chinese government to spy on its Uyghur population living in the Xinjiang province.
 
Original exploit disclosure
China backed group behind many of the incidents

True, but I think it's still important to report on it, both to make sure we don't forget about their plight, but also to make sure we don't go down the same way. It's crazy that I still do know people that think China is a great country we should learn from.

The one stand out comment you made in this video that annoys me somewhat is your encouragement for people to choose the 240hz IPS display for gaming.
 
240hz and IPS ..hell even 240hz and TN ...just ..240hz in general is stupid.
LCD Pixels can NOT transition fast enough for 240hz.
240hz requires a full 100% MAXIMUM (not average) pixel response time of 4.1ms. There is no LCD display i have seen reviewed and tested that can achieve such low pixel response figures. I havnt even seen one that can technically handle 144hz yet.
When the pixels cant transition fast enough then the image you get , even if ur getting more frames each second, isnt accurate both in color and in sharpness. Slow pixel response = ghosting/blurring.
 
Now i will concede this... some people may not notice ghosting once pixel speeds reach a certain point, but may perceive smoothness of more frames.
However, it does not change the fact, and it is a fact, that blurring/ghosting WILL still be present and WILL still be negatively impacting the advantage of the higher refresh rate and, depending on the pixel response times, it can be a better idea to drop down to a lower frequency screen with a faster pixel response as it would have a sharper looking moving image.
For example a certain 240hz screen has been tested and shown to have certain pixel transitions as slow as 22ms, thats to slow even for 60hz. In that instance it would be a far better idea to get a 120hz or 144hz screen with much faster pixel response.
 
Anyway the point i want to make is that it would do everyone a great favor if more tech youtubers openly talked about and used full (so not just 'averages') pixel response time tests and results to better suggest and talk about good gaming monitors in regards to speed. I far to often see people buying or thinking about buying these 144hz and 240hz gaming monitors with absolutely no idea about pixel response times and how important they are in regards to image clarity, theres no point having all those frames if they are not clear and crisp.
 
 
That out of the way though .. great vid ..gotta love OLED displays. Though with nothing really in the monitor space still, im now more looking forward to ULED and HybridOLED

There's already colored e-ink technology, imagine what they could have done with that.

Fun fact, if you need a webcam, you don't need to buy a whole different laptop.............
There is this thing called a "USB webcam" that you can buy separately.
 
Not sure how ya'll missed this when you literally mentioned bundling one in the box only seconds before.

Thanks for posting the doc ❤️ .

One thing to note is that not all Type-C ports are equal. Some phones might have a Type-C ports but they only carries data and power, not the crucial display signal.
 
Plus, HDaRen't.

Galaxy Fold Screens Breaking
Source 1: Blade of Grass https://linustechtips.com/main/topic/1055645-don%E2%80%99t-remove-the-samsung-galaxy-phone-%E2%80%9Cscreen-protector%E2%80%9D%E2%80%94four-reports-report-dead-phones-after-removing/
Source 2:
 
Four separate reviewers of the Galaxy Fold have had their screens break.
Two of them (Marques and Mark Gurman of Bloomberg) pulled off what they thought was a screen protector but turned out to be part of the screen
Dieter from the Verge got a bulge under the screen somehow and it eventually died
Steve Kovach from CNBC unknown cause of death
Samsung says it will still sell the Fold
The review units did not have a warning on the box cautioning users to leave the peel on. Samsung says future customers will be warned.
why does a $2,000 phone keep its screen together with a cover that’s so easily removed?
Will the Mate X design have a similarly high number of failures?
 
Sony Internally Regulating Sexual Content in Games
Source 1: matrix07012 https://linustechtips.com/main/topic/1055592-sony-now-internally-regulates-sexual-content-in-video-games/
Source 2: https://nichegamer.com/2019/04/16/sony-now-internally-regulates-sexual-content-in-video-games/
Source 3: Affected games list https://www.oneangrygamer.net/sony-ps4-censorship-policy-censored-games/
 
Last October, Sony altered their approval process, placing more scrutiny on sexual content in Japanese games
Western games have been censored for years
In December Sony finally made a statement: “About the censorship, we tried to meet global standards,”
We’ve now learned that the company has adopted a new internal regulatory board to enforce new in-house standards that limit sexually explicit content in games submitted to be published on their platforms – separate from national rating boards.
they desinged their guidelines so “creators can offer well- balanced content on the platform” so that gaming “does not inhibit the sound growth and development” of young people.
The new policy has been forcing Japanese developers to censor their games even for release in Japan, as the new policies have been affecting their home market, not just western markets.
Two key factors leading to Sony’s new internal crackdown on sexual content are
reportedly the #MeToo movement in the United States, which Sony officials say pointed to the “dangers of being associated with content that some might see as demeaning to women.”
Sony officials noted executives at the company have become concerned their global reputation could be tarnished from sexually explicit content sold in a few markets. One of the biggest concerns is focused on content released in Japan that features near-nudity and “images of young women who might appear underage.”
the rise of video channels on YouTube and Twitch, where gamers can stream explicit content from Japan, who traditionally have had lax standards on sexual content.
Impact on developers:
“You don’t know what they will say until you complete the work and submit it for review,”
“And if they are not happy, even if they allowed the same degree of sexuality a few days before, we need to take it back and ask our staff to make adjustments. That’s very costly.”
Nintendo confirmed they do not regulate sexual content beyond the game developers obtaining a rating from various national rating boards, and that their game consoles allow parents to restrict content based on the rating.
 
UK wants to ban the 'Like' button
Source 1: https://www.techspot.com/news/79654-uk-wants-protect-young-people-banning-like-button.html
Source 2: all rules: https://ico.org.uk/media/about-the-ico/consultations/2614762/age-appropriate-design-code-for-public-consultation.pdf?utm_source=hootsuite&utm_medium=&utm_term=&utm_content=&utm_campaign=codeconsultation
 
In the UK, proposed guidelines have been put forward by the government to improve child safety on social media platforms, including the removal of the Like button.
The Information Commissioner's Office has compiled the draft code (source 2), which says “nudge” techniques such as Likes and Snapchat streaks that are used to keep under-18s online longer should not be allowed.
Also, companies should not use nudge techniques to encourage children to hand over unnecessary personal data, weaken or turn off their privacy protections, or extend their use.
Having a giant YES button and small ‘no’ button is one nudge technique.
“We shouldn’t have to prevent our children from being able to use it, but we must demand that they are protected when they do. This code does that.”
Consultations for the report are set to continue through to May 31, and the final version isn’t expected to come into force until next year.
What’s Coming Out on Floatplane? Go Over Current Week.
Rapid Fire
Facial Recognition to become standard in U.S. airports
Source 1: https://www.theverge.com/2019/4/18/18484581/us-airport-facial-recognition-departing-flights-biometric-exit
Source 2:
 
The Department of Homeland Security plans to use facial recognition technology on 97 percent of departing passengers within the next four years.
The program first started rolling out in 2017, and was operational in 15 US airports as of the end of 2018.
The facial recognition system works by photographing passengers at their departure gate. It then cross-references this photograph against a library populated with images from visa and passport applications, as well as those taken by border agents when foreigners enter the country.
It and allows authorities to identify people who have overstayed their visas.
US authorities have traditionally relied on airline flight manifests to track who’s leaving the country.
Since the introduction of the system, facial recognition identified 7,000 passengers who overstayed their visas on the 15,000 flights tracked.
The US Customers and Border Protection estimates that over 600,000 people overstay their visas every year, an offense that carries a maximum penalty of a 10-year ban from entering the US.
 

TSMC unveils 6nm process
Source 1: CiBi https://linustechtips.com/main/topic/1055272-tsmc-unveils-6nm-process/
Source 2: https://www.tsmc.com/uploadfile/pr/newspdf/THWQWQTHTH/NEWS_FILE_EN.pdf
 
This week TSMC announced its 6-nanometer (N6) process, which provides a significant enhancement over its N7 technology.
By leveraging the new capabilities in extreme ultraviolet (EUV) lithography gained from theN7+ technology currently in risk production, TSMC’s N6 process delivers 18% higher logic density over the N7 process.
‘Risk production’ refers to the initial production runs of a new process.
At the same time, its design rules are fully compatible with TSMC’s proven N7 technology, allowing its comprehensive design ecosystem to be reused.
N6 is scheduled for risk production in the first quarter of 2020
Applications
High-to-mid end mobile
AI,
networking,
5G infrastructure,
GPU,
high-performance computing.
 
LTX 2019
Source 1:  https://www.ltxexpo.com/updates/2019/4/18/byoc-update-amp-last-call-for-early-bird-pricing
 
- LTX 2019 featuring DreamHack!
 
- July 27th and 28th, 2019
 
- 11am to 6pm each day
 
- Vancouver Convention Centre, Vancouver BC, Canada
 
- Focus on bringing people together to offer a hands-on experience with PC-hardware and gaming - workshops, activities, competitions, giveaways
 
- Come learn how to build a PC! Delid a CPU, Learn how to disassemble a - GPU, get some anger out by destroying some PC cases. Or you can watch some of our mainstage panels - check out a bunch of cool retro PCs
 
- VR experiences, play some games, and hang out with us and other creators!
 
- PLUS, we’re partnering with Dreamhack to offer a 500-PC BYOC, 100 PC FreePlay area, and Indie Zone
 
- 90 more BYOC tickets will be made available tomorrow at 12pm PST. Stake them out now on Tixr through ltx expo dot com
 
- Prices for all other ticket tiers will be increasing as of this time as well, so if you don’t have a ticket, and aren’t interested in the BYOC, then you should GET ONE NOW.
 
- Double the amount of space from LTX 2018, and double the number of booths