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RDNA 4 + 32Go de GDDR6 + passives : deux nouvelles cartes graphiques séduisantes chez AMD, mais uniquement pour les pros

Sans faire de bruit, AMD a ajouté il y a deux jours, le 10 décembre 2025, deux nouvelles cartes graphiques à base de l'architecture RDNA 4 si populaire ces derniers mois. Il ne s'agit pas, par contre, de nouvelles Radeon RX 9000 et nous continuerons donc à devoir nous contenter de 4 cartes destinées...

Intel Core Ultra 9 290K Plus et Core Ultra 7 270K Plus : les caractéristiques confirmées par un revendeur ?

On garde le conditionnel de rigueur car rien n'est officiel, mais voilà une rumeur de plus allant dans le même sens que les précédentes au sujet de la nouvelle série Arrow Lake-S Rrefresh qu'Intel devrait annoncer très bientôt, pour tenter de relever la tête en LGA1851 avant l'arrivée fin 2026 (si t...

[Bon plan] GeForce RTX 5080 + alimentation 1000W à 1099,99€

Alors que tout semble indiquer que les prix des cartes graphiques vont augmenter début 2026 à cause de l'envolée des courts de la DRAM, voici peut-être l'une des dernières belles offres de cette fin d'année 2025 sur une NVIDIA GeForce RTX 5080. Il s'agit en fait d'un pack, qui se destine à ceux qui...

[MàJ 01/01] [Bon plan] Fil rouge : les jeux PC offerts pour les fêtes de fin d'année 2025 !

Comme nous le faisons chaque année, nous allons suivre les jeux PC qui sont offerts durant cette seconde moitié du mois de décembre 2025, et déborder un peu sur le début 2026. C'est bien sûr l'Epic Games Store qui nous motive cette année encore à faire ce Bon plan "fil rouge" puisque la plateforme v...

The Game Awards 2025 : et les gagnants sont... !

Ce 12 décembre 2025, à 1h30 en France, débutait la cérémonie des Game Awards 2025. Elle dura environ 3h30 et le grand favori, Clair Obscur: Expedition 33, établit le nouveau record de l'évènement en emportant 9 prix à lui seul, détrônant Baldur's Gate 3 qui en avait reçu 8 en 2023. Les Game Awards 2...

ZOTAC a mis au point une GeForce RTX 5060 Ti sans connecteur d'alimentation externe, mais pour un usage précis

Une GeForce RTX 5060 Ti avec un TGP de 180 W entièrement alimentée par son slot principal ? Aucun connecteur additionnel PCIe 8pins ou 12V-2x6, pas même un petit HC-PWR planqué en dessous ? C'est bel et bien ce qu'a réalisé ZOTAC, mais dans un cadre précis qui ne laisse absolument pas espérer que la...

MSI lance ses cartes mères AM5 X870(E) MAX et EVO, en route vers les AMD Zen 6 alias Olympic Ridge !

Nous y voilà. Cela aura pris du temps car cela fait des semaines et mêmes mois qu'on entend parler de l'arrivée des nouvelles cartes mères AM5 séries "MAX" et "EVO" de MSI et (notamment) de leurs capacité à accueillir des BIOS faisant jusqu'à 64 Mo, contre 32 Mo au maximum sur les cartes avec chipse...

[Bon plan] Pack Intel Core Ultra 7 265K + AIO MSI 360mm à 317,99€ livré

Le prix est excellent, mais l'offre on s'en doute n'intéressera probablement pas grand monde entre la mauvaise réputation des processeurs Arrow Lake-S, mais aussi les difficultés actuellement à monter une configuration à cause des prix démentiels des barrettes DDR5. Après, comme à notre habitude, no...

Un laptop gaming OLED 16/9 dont l'écran peut s'étendre en 21/9 ? Lenovo devrait présenter cela au CES le 6 janvier 2026 !

Mise à jour du 19 décembre 2025 : Windows Latest vient de publier quelques informations supplémentaires au sujet de ce laptop à l'écran "enroulable", donc une qui est tout de même très intéressantes : les dimensions de la dalle. L'écran ferait de base 16" de diagonale, qui serait baptisé par Lenovo...

Samsung envisagerait d'augmenter sa production de DRAM grand public, mais ce n'est pas par générosité...

Samsung aurait-il "pitié" des pauvres consommateurs que nous sommes, acculés par la montée des prix de la DDR5 et alors que les cartes graphiques devraient également voir leurs tarifs augmenter d'ici peu à cause de leur VRAM ? Évidemment que non, ce genre de considérations n'a guère sa place par les...

Les USA autorisent la vente du NVIDIA H200 à la Chine, mais est-ce qu'elle en voudra ?

Le bras de fer, qui se transforme également en poker menteur, continue entre les États-Unis et la Chine. Les USA avaient finalement accepté en aout 2025 que NVIDIA recommence à vendre son GPU H20 à la Chine, avec en contrepartie le fait que NVIDIA devait reverser à l'administration 15 % de ces recet...

Le mini PC ZOTAC de 8,5L avec une véritable GeForce RTX 5070 Ti arrive en boutique

Thibaut vous l'avait brièvement présenté en amont du Computex 2025 au mois de mai, mais nous n'avions pas eu trop l'occasion de reparler sur H&Co du ZOTAC ZBOX MAGNUS ONE EU27507TC. Il faut dire qu'il s'est ensuite fait plus que discret (on va même dire inexistant) dans le commerce et une autre...

Quelles cartes graphiques s'en sortent le mieux sur Dying Light: The Beast avec Ray Tracing ?

Fin novembre, Techland gratifiait les joueurs de Dying Light: The Beast d'une mise à jour 1.4 du jeu apportant une nouvelle fonctionnalité graphique intéressante : le fameux ray tracing. Thibaut vous en avait d'ailleurs déjà parlé dans cette actualité, qui vous présentait via une vidéo de MxBenchmar...

Idaho Lab Produces World's First Molten Salt Fuel for Nuclear Reactors

8 décembre 2025 à 12:34
America's Energy Department runs a research lab in Idaho — and this week announced successful results from a ground-breaking experiment. "This is the first time in history that chloride-based molten salt fuel has been produced for a fast reactor," says Bill Phillips, the lab's technical lead for salt synthesis. He calls it "a major milestone for American innovation and a clear signal of our national commitment to advanced nuclear energy." Unlike traditional reactors that use solid fuel rods and water as a coolant, most molten salt reactors rely on liquid fuel — a mixture of salts containing fissile material. This design allows for higher operating temperatures, better fuel efficiency, and enhanced safety. It also opens the door to new applications, including compact nuclear systems for ships and remote installations. "The Molten Chloride Fast Reactor represents a paradigm shift in the nuclear fuel cycle, and the Molten Chloride Reactor Experiment (MCRE) will directly inform the commercialization of that reactor," said Jeff Latkowski, senior vice president of TerraPower and program director for the Molten Chloride Fast Reactor. "Working with world-leading organizations such as INL to successfully synthesize this unique new fuel demonstrates how real progress in Gen IV nuclear is being made together." "The implications for the maritime industry are significant," said Don Wood, senior technical advisor for MCRE. "Molten salt reactors could provide ships with highly efficient, low-maintenance nuclear power, reducing emissions and enabling long-range, uninterrupted travel. The technology could spark the rise of a new nuclear sector — one that is mobile, scalable and globally transformative. More details from America's Energy Department: MCRE will require a total of 72 to 75 batches of fuel salt to go critical, making it the largest fuel production effort at INL since the operations of Experimental Breeder Reactor-II more than 30 years ago. The full-scale demonstration of the new fuel salt synthesis line for MCRE was made possible by a breakthrough in 2024. After years of testing, the team found the right recipe to convert 95 percent of uranium metal feedstock into 18 kilograms of uranium chloride fuel salt in only a few hours — a process that previously took more than a week to complete... After delivering the first batch of fuel salt this fall, the team anticipates delivering four additional batches by March of 2026. MCRE is anticipated to run in 2028 for approximately six months at INL in the Laboratory for Operation and Testing (LOTUS) in the United States test bed. "With the first batch of fuel salt successfully created at INL, researchers will now conduct testing to better understand the physics of the process, with a goal of moving the process to a commercial scale over the next decade," says Cowboy State Daily. Thanks to long-time Slashdot reader schwit1 for sharing the article.

Read more of this story at Slashdot.

NVIDIA Rubin repoussé ? C'est en tout cas la rumeur du jour

Le 9 septembre 2025, NVIDIA annonçait officiellement sa nouvelle architecture Rubin et le monstrueux GPU qui allait l'exploiter fin 2026 : Rubin CPX. Seulement, certaines rumeurs récentes relayées par ZDNET Corée et rapportées par Jukan sur X laissent à penser que ce ne sera peut-être qu'en 2027 que...

GPU Battlemage haut de gamme BMG-G31 : si même Intel nous dit qu'il existe, on va finir par y croire !

Le 1er novembre 2025, nous vous reparlions de l'arlésienne : le GPU Battlemage BMG-G31 d'Intel. La version haut de gamme du processeur graphique Battlemage n'a toujours pas vu le jour, un an après le lancement du BMG-G21 qui équipe pour l'heure l'intégralité de la gamme de cartes graphiques dédiées...

Was the Airbus A320 Recall Caused By Cosmic Rays?

8 décembre 2025 à 08:34
What triggered that Airbus emergency software recall? The BBC reports that Airbus's initial investigation into an aircraft's sudden drop in altitude linked it "to a malfunction in one of the aircraft's computers that controls moving parts on the aircraft's wings and tail." But that malfunction "seems to have been triggered by cosmic radiation bombarding the Earth on the day of the flight..." The BBC believes radiation from space "could become a growing problem as ever more microchips run our lives." What Airbus says occurred on that JetBlue flight from Cancun to New Jersey was a phenomenon called a single-event upset, or bit flip. As the BBC has previously reported, these computer errors occur when high-speed subatomic particles from outer space, such as protons, smash into atoms in our planet's atmosphere. This can cause a cascade of particles to rain down through our atmosphere, like throwing marbles across a table. In rare cases, those fast-moving neutrons can strike computer electronics and disrupt tiny bits of data stored in the computer's memory, switching that bit — often represented as a 0 or 1 — from one state to another. "That can cause your electronics to behave in ways you weren't expecting," says Matthew Owens, professor of space physics at the University of Reading in the UK. Satellites are particularly affected by this phenomenon, he says. "For space hardware we see this quite frequently." This is because the neutron flux — a measure of neutron radiation — rises the higher up in the atmosphere you go, increasing the chance of a strike hitting sensitive parts of the computer equipment on board. Aircraft are more vulnerable to this problem than computer equipment on the ground, although bit flips do occur at ground level, too. The increasing reliance of computers in fly-by-wire systems in aircraft, which use electronics rather than mechanical systems to control the plane in the air, also mean the risk posed by bit flips when they do occur is higher... Airbus told the BBC that it tested multiple scenarios when attempting to determine what happened to the 30 October 2025 JetBlue flight. In this case also, the company ruled out various possibilities except that of a bit flip. It is hard to attribute the incident to this for sure, however, because careering neutrons leave no trace of their activity behind, says Owens... [Airbus's software update] works by inducing "rapid refreshing of the corrupted parameter so it has no time to have effect on the flight controls", Airbus says. This is, in essence, a way of continually sanitising computer data on these aircraft to try and ensure that any errors don't end up actually impacting a flight... As computer chips have become smaller, they have also become more vulnerable to bit flips because the energy required to corrupt tiny packets of data has got lower over time. Plus, more and more microchips are being loaded into products and vehicles, potentially increasing the chance that a bit flip could cause havoc. If nothing else, the JetBlue incident will focus minds across many industries on the risk posed to our modern, microchip-dependent lives from cosmic radiation that originates far beyond our planet. Airbus said their analysis revealed "intense solar radiation" could corrupt data "critical to the functioning of flight control." But that explanation "has left some space weather scientists scratching their heads," adds the BBC. Space.com explains: Solar radiation levels on Oct. 30 were unremarkable and nowhere near levels that could affect aircraft electronics, Clive Dyer, a space weather and radiation expert at University of Surrey in the U.K., told Space.com. Instead, Dyer, who has studied effects of solar radiation on aircraft electronics for decades, thinks the onboard computer of the affected jet could have been struck by a cosmic ray, a stream of high-energy particles from a distant star explosion that may have travelled millions of years before reaching Earth. "[Cosmic rays] can interact with modern microelectronics and change the state of a circuit," Dyer said. "They can cause a simple bit flip, like a 0 to 1 or 1 to 0. They can mess up information and make things go wrong. But they can cause hardware failures too, when they induce a current in an electronic device and burn it out."

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Philips et AOC annoncent leurs écrans LCD 1000Hz, avec un "mais"...

Le 22 novembre 2025, Philips parlait du lancement proche d'un écran capable d'atteindre 1000 Hz de taux de rafraichissement. C'était lors de la WePlay Culture Expo 2025, qui se déroulait en Chine, à Shanghai. L'annonce officielle vient de son côté d'avoir lieu le 5 décembre, lors d'une présentation...

All of Russia's Porsches Were Bricked By a Mysterious Satellite Outage

8 décembre 2025 à 04:36
An anonymous reader shared this report from Autoblog: Imagine walking out to your car, pressing the start button, and getting absolutely nothing. No crank, no lights on the dash, nothing. That's exactly what happened to hundreds of Porsche owners in Russia last week. The issue is with the Vehicle Tracking System, a satellite-based security system that's supposed to protect against theft. Instead, it turned these Porsches into driveway ornaments. The issue was first reported at the end of November, with owners reporting identical symptoms of their cars refusing to start or shutting down soon after ignition. Russia's largest dealership group, Rolf, confirmed that the problem stems from a complete loss of satellite connectivity to the VTS. When it loses its connection, it interprets the outage as a potential theft attempt and automatically activates the engine immobilizer. The issue affects all models and engine types, meaning any Porsche equipped with the system could potentially disable itself without warning. The malfunction impacts Porsche models dating back to 2013 that have the factory VTS installed... When the VTS connection drops, the anti-theft protocol kicks in, cutting fuel delivery and locking down the engine completely.

Read more of this story at Slashdot.

Can This Simple Invention Convert Waste Heat Into Electricity?

8 décembre 2025 à 02:40
Nuclear engineer Lonnie Johnson worked on NASA's Galileo mission, has more than 140 patents, and invented the Super Soaker water gun. But now he's working on "a potential key to unlock a huge power source that's rarely utilized today," reports the Atlanta Journal-Constitution. [Alternate URL here.] Waste heat... The Johnson Thermo-Electrochemical Converter, or JTEC, has few moving parts, no combustion and no exhaust. All the work to generate electricity is done by hydrogen, the most abundant element in the universe. Inside the device, pressurized hydrogen gas is separated by a thin, filmlike membrane, with low pressure gas on one side and high pressure gas on the other. The difference in pressure in this "stack" is what drives the hydrogen to compress and expand, creating electricity as it circulates. And unlike a fuel cell, it does not need to be refueled with more hydrogen. All that's needed to keep the process going and electricity flowing is a heat source. As it turns out, there are enormous amounts of energy vented or otherwise lost from industrial facilities like power plants, factories, breweries and more. Between 20% and 50% of all energy used for industrial processes is dumped into the atmosphere and lost as waste heat, according to the U.S. Department of Energy. The JTEC works with high temperatures, but the device's ability to generate electricity efficiently from low-grade heat sources is what company executives are most excited about. Inside JTEC's headquarters, engineers show off a demonstration unit that can power lights and a sound system with water that's roughly 200 degrees Fahrenheit — below the boiling point and barely warm enough to brew a cup of tea, said Julian Bell, JTEC's vice president of engineering. Comas Haynes, a research engineer at the Georgia Tech Research Institute specializing in thermal and hydrogen system designs, agrees the company could "hit a sweet spot" if it can capitalize on lower temperature heat... For Johnson, the potential application he's most excited about lies beneath our feet. Geothermal energy exists naturally in rocks and water beneath the Earth's surface at various depths. Tapping into that resource through abandoned oil and gas wells — a well-known access point for underground heat — offers another opportunity. "You don't need batteries and you can draw power when you need it from just about anywhere," Johnson said. Right now, the company is building its first commercial JTEC unit, which is set to be deployed early next year. Mike McQuary, JTEC's CEO and the former president of the pioneering internet service provider MindSpring, said he couldn't reveal the customer, but said it's a "major Southeast utility company." "Crossing that bridge where you have commercial customers that believe in it and will pay for it is important," McQuary said... On top of some initial seed money, the company brought in $30 million in a Series A funding in 2022 — money that allowed the company to move to its Lee + White headquarters and hire more than 30 engineers. McQuary said it expects to begin another round of fundraising soon. "Johnson, meanwhile, hasn't stopped working on new inventions," the article points out. "He continues to refine the design for his solid-state battery..."

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