Technologies

Data Centers Are ‘AI Factories.’ Google and Meta Are Spending Big Bucks to Build Them

It’s not just the spending that will be big. Meta’s Mark Zuckerberg envisions a single data center, the footprint of which would occupy as much acreage as a good chunk of Manhattan.

Tech giants Google and Meta have a lot riding on the growth and success of AI, and to support those efforts, they’re also committing significant sums of money to build the data centers they’re going to need to run that power-hungry technology.

On Tuesday, Google announced that it plans to invest $25 billion in data centers and other AI infrastructure tied to the PJM Interconnection, the biggest electric grid in the US. The PJM Interconnection reaches across 13 states in the eastern half of the US. The new data centers are expected to be in and around Pennsylvania.

To help meet the energy demands of the new data centers, Google also said it will invest $3 billion in hydropower. That use of a renewable energy source fits in with Google’s goal to become carbon-free by 2030. (Similarly, Meta is aiming to achieve net-zero emissions by 2030.)

«I think there is a race on to co-locate data centers close to reliable, plentiful and inexpensive sources of energy,» Ramayya Krishnan, professor of management science and information systems at Carnegie Mellon University’s Heinz College.

The advent of generative AI tools like ChatGPT, Google’s Gemini and Meta AI is accelerating the demands on data centers, which also support everyday cloud computing tasks like photo sharing and movie streaming.

«Data centers are a critical part of the AI production process and its deployment,» said Krishnan. «Think of them as AI factories.»

Google already operates dozens of data centers worldwide.

Google’s announcement comes on the same day that President Donald Trump is attending an energy summit at Carnegie Mellon University in Pittsburgh, where investment in AI is a key topic.

On Monday, Meta CEO Mark Zuckerberg said that his company will invest «hundreds of billions of dollars» in the computing needed to build superintelligence, a lofty aspiration to create AI that surpasses human capabilities.

Zuckerberg said that Meta has «several multi-[gigawatt] clusters» in the works, referring to the power consumption of the data centers. «We’re calling the first one Prometheus, and it’s coming online in ’26. We’re also building Hyperion, which will be able to scale up to 5GW over several years.» Earlier this year, Zuckerberg introduced one of Meta’s newest data centers, a 2GW facility being built in Louisiana.

These facilities could be mammoth. In a post on Threads, Zuckerberg showed the outline of a single data center that would cover «a significant part of the footprint of Manhattan.»

As the big new data centers get built, that could bring both opportunities and stresses to the communities near them

In a recent Airedale by Modine survey of 600 Americans, 70% of respondents said they wouldn’t mind living near a data center and remained hopeful that the facilities would positively impact their community. Among those who opposed data centers being built near their homes, their top concerns involved increased energy demand, noise pollution and hits to property value.

Krishnan noted the potential pluses and minuses. Data centers could raise energy prices for residential customers if the energy supply is limited, and they also use significant amounts of water, which could create environmental concerns.

«On the positive side,» Krishnan said, «data centers could create an eco-system of partners increasing employment opportunities in the region and [consequential] growth.»

Technologies

TMR vs. Hall Effect Controllers: Battle of the Magnetic Sensing Tech

The magic of magnets tucked into your joysticks can put an end to drift. But which technology is superior?

Competitive gamers look for every advantage they can get, and that drive has spawned some of the zaniest gaming peripherals under the sun. There are plenty of hardware components that actually offer meaningful edges when implemented properly. Hall effect and TMR (tunnel magnetoresistance or tunneling magnetoresistance) sensors are two such technologies. Hall effect sensors have found their way into a wide variety of devices, including keyboards and gaming controllers, including some of our favorites like the GameSir Super Nova.

More recently, TMR sensors have started to appear in these devices as well. Is it a better technology for gaming? With multiple options vying for your lunch money, it’s worth understanding the differences to decide which is more worthy of living inside your next game controller or keyboard.

How Hall effect joysticks work

We’ve previously broken down the difference between Hall effect tech and traditional potentiometers in controller joysticks, but here’s a quick rundown on how Hall effect sensors work. A Hall effect joystick moves a magnet over a sensor circuit, and the magnetic field affects the circuit’s voltage. The sensor in the circuit measures these voltage shifts and maps them to controller inputs. Element14 has a lovely visual explanation of this effect here.

The advantage this tech has over potentiometer-based joysticks used in controllers for decades is that the magnet and sensor don’t need to make physical contact. There’s no rubbing action to slowly wear away and degrade the sensor. So, in theory, Hall effect joysticks should remain accurate for the long haul.

How TMR joysticks work

While TMR works differently, it’s a similar concept to Hall effect devices. When you move a TMR joystick, it moves a magnet in the vicinity of the sensor. So far, it’s the same, right? Except with TMR, this shifting magnetic field changes the resistance in the sensor instead of the voltage.

There’s a useful demonstration of a sensor in action here. Just like Hall effect joysticks, TMR joysticks don’t rely on physical contact to register inputs and therefore won’t suffer the wear and drift that affects potentiometer-based joysticks.

Which is better, Hall effect or TMR?

There’s no hard and fast answer to which technology is better. After all, the actual implementation of the technology and the hardware it’s built into can be just as important, if not more so. Both technologies can provide accurate sensing, and neither requires physical contact with the sensing chip, so both can be used for precise controls that won’t encounter stick drift. That said, there are some potential advantages to TMR.

According to Coto Technology, who, in fairness, make TMR sensors, they can be more sensitive, allowing for either greater precision or the use of smaller magnets. Since the Hall effect is subtler, it relies on amplification and ultimately requires extra power. While power requirements vary from sensor to sensor, GameSir claims its TMR joysticks use about one-tenth the power of mainstream Hall effect joysticks. Cherry is another brand highlighting the lower power consumption of TMR sensors, albeit in the brand’s keyboard switches.

The greater precision is an opportunity for TMR joysticks to come out ahead, but that will depend more on the controller itself than the technology. Strange response curves, a big dead zone (which shouldn’t be needed), or low polling rates could prevent a perfectly good TMR sensor from beating a comparable Hall effect sensor in a better optimized controller.

The power savings will likely be the advantage most of us really feel. While it won’t matter for wired controllers, power savings can go a long way for wireless ones. Take the Razer Wolverine V3 Pro, for instance, a Hall effect controller offering 20 hours of battery life from a 4.5-watt-hour battery with support for a 1,000Hz polling rate on a wireless connection. Razer also offers the Wolverine V3 Pro 8K PC, a near-identical controller with the same battery offering TMR sensors. They claim the TMR version can go for 36 hours on a charge, though that’s presumably before cranking it up to an 8,000Hz polling rate — something Razer possibly left off the Hall effect model because of power usage.

The disadvantage of the TMR sensor would be its cost, but it appears that it’s negligible when factored into the entire price of a controller. Both versions of the aforementioned Razer controller are $199. Both 8BitDo and GameSir have managed to stick them into reasonably priced controllers like the 8BitDo Ultimate 2, GameSir G7 Pro and GameSir Cyclone 2.

So which wins?

It seems TMR joysticks have all the advantages of Hall effect joysticks and then some, bringing better power efficiency that can help in wireless applications. The one big downside might be price, but from what we’ve seen right now, that doesn’t seem to be much of an issue. You can even find both technologies in controllers that cost less than some potentiometer models, like the Xbox Elite Series 2 controller.

Caveats to consider

For all the hype, neither Hall effect nor TMR joysticks are perfect. One of their key selling points is that they won’t experience stick drift, but there are still elements of the joystick that can wear down. The ring around the joystick can lose its smoothness. The stick material can wear down (ever tried to use a controller with the rubber worn off its joystick? It’s not pleasant). The linkages that hold the joystick upright and the springs that keep it stiff can loosen, degrade and fill with dust. All of these can impact the continued use of the joystick, even if the Hall effect or TMR sensor itself is in perfect operating order.

So you might not get stick drift from a bad sensor, but you could get stick drift from a stick that simply doesn’t return to its original resting position. That’s when having a controller that’s serviceable or has swappable parts, like the PDP Victrix Pro BFG, could matter just as much as having one with Hall effect or TMR joysticks.

Technologies

Today’s NYT Connections: Sports Edition Hints and Answers for Feb. 18, #513

Here are hints and the answers for the NYT Connections: Sports Edition puzzle for Feb. 18, No. 513.

Looking for the most recent regular Connections answers? Click here for today’s Connections hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle and Strands puzzles.

Today’s Connections: Sports Edition has a fun yellow category that might just start you singing. If you’re struggling with today’s puzzle but still want to solve it, read on for hints and the answers.

Connections: Sports Edition is published by The Athletic, the subscription-based sports journalism site owned by The Times. It doesn’t appear in the NYT Games app, but it does in The Athletic’s own app. Or you can play it for free online.

Read more: NYT Connections: Sports Edition Puzzle Comes Out of Beta

Hints for today’s Connections: Sports Edition groups

Here are four hints for the groupings in today’s Connections: Sports Edition puzzle, ranked from the easiest yellow group to the tough (and sometimes bizarre) purple group.

Yellow group hint: I don’t care if I never get back.

Green group hint: Get that gold medal.

Blue group hint: Hoops superstar.

Purple group hint: Not front, but…

Answers for today’s Connections: Sports Edition groups

Yellow group: Heard in «Take Me Out to the Ball Game.»

Green group: Olympic snowboarding events.

Blue group: Vince Carter, informally.

Purple group: ____ back.

Read more: Wordle Cheat Sheet: Here Are the Most Popular Letters Used in English Words

What are today’s Connections: Sports Edition answers?

The yellow words in today’s Connections

The theme is heard in «Take Me Out to the Ball Game.» The four answers are Cracker Jack, home team, old ball game and peanuts.

The green words in today’s Connections

The theme is Olympic snowboarding events. The four answers are big air, giant slalom, halfpipe and slopestyle.

The blue words in today’s Connections

The theme is Vince Carter, informally. The four answers are Air Canada, Half-Man, Half-Amazing, VC and Vinsanity.

The purple words in today’s Connections

The theme is ____ back. The four answers are diamond, drop, quarter and razor.

Technologies

Today’s NYT Mini Crossword Answers for Wednesday, Feb. 18

Here are the answers for The New York Times Mini Crossword for Feb. 18.

Looking for the most recent Mini Crossword answer? Click here for today’s Mini Crossword hints, as well as our daily answers and hints for The New York Times Wordle, Strands, Connections and Connections: Sports Edition puzzles.

Today’s Mini Crossword is a fun one, and it’s not terribly tough. It helps if you know a certain Olympian. Read on for all the answers. And if you could use some hints and guidance for daily solving, check out our Mini Crossword tips.

If you’re looking for today’s Wordle, Connections, Connections: Sports Edition and Strands answers, you can visit CNET’s NYT puzzle hints page.

Read more: Tips and Tricks for Solving The New York Times Mini Crossword

Let’s get to those Mini Crossword clues and answers.