英伟达发布两款个人AI超级计算机
英伟达在GTC 2025大会上推出全新“AI个人超级计算机”系列，搭载Grace Blackwell芯片平台。包括DGX Spark和DGX Station两款新机，用户可在边缘进行AI模型原型设计、微调和运行。
DGX Spark采用GB10 Grace Blackwell超级芯片，算力高达每秒1000万亿次。DGX Station则配备GB300 Grace Blackwell超级芯片和784GB内存。前者已上市，后者预计年内发售。
TechCrunch
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Telegram is riding high, adding tens of million of users this year. Now the bill is coming due.Telegram is one of the few significant social-media challengers to Facebook Inc., FB -1.90% on a trajectory toward one billion users active each month by the end of 2022, up from roughly 550 million today.
Most people buy Bitcoin via exchanges, such as Coinbase. Exchanges allow you to buy, sell and hold cryptocurrency, and setting up an account is similar to opening a brokerage account—you’ll need to verify your identity and provide some kind of funding source, such as a bank account or debit card. Major exchanges include Coinbase, Kraken, and Gemini. You can also buy Bitcoin at a broker like Robinhood. Regardless of where you buy your Bitcoin, you’ll need a digital wallet in which to store it. This might be what’s called a hot wallet or a cold wallet. A hot wallet (also called an online wallet) is stored by an exchange or a provider in the cloud. Providers of online wallets include Exodus, Electrum and Mycelium. A cold wallet (or mobile wallet) is an offline device used to store Bitcoin and is not connected to the Internet. Some mobile wallet options include Trezor and Ledger.
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