Brad ChacosSenior Editor, PCWorld

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Brad Chacos spends the days jamming to Spotify and digging through desktop PCs. He covers the gaming, graphics cards, and how-to beats for PCWorld, and spends his mornings running the news desk for PCWorld, Macworld, Greenbot, and TechHive. Reach him at bchacos@pcworld.com.

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Ask Cortana anything: Sassy answers to 59 burning questions

If nothing else, the digital assistant in Windows Phone 8.1 proves she’s more fun than Siri and Google Now put together.

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New Windows 10 preview build drops with Edge browser improvements, UI polish

Windows 10 preview build 10122 doesn't add many new features and is a lot more stable than previous versions—unless you're trying to use the new Edge browser with an AMD Radeon GPU.

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These 20 deep, absorbing PC games will eat days of your life

These majestic games demanded to be played for days, not hours—and your tenacity will be rewarded.

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AMD's new flagship Radeon graphics card pictured by Battlefield's tech guru

This is it, folks: The first official glimpse at AMD's forthcoming HBM-powered Radeon graphics card.

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YouTube takes aim at Twitch with 60 frames-per-second HD livestreams

Google may not have won the bidding battle for Twitch, but it's not giving up the war for live game streaming.

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AMD Radeon graphics run Witcher 3 just fine, unless Nvidia HairWorks is enabled--and that's OK

Don't let all the sound and fury on the Internet fool you. The Witcher 3 plays just fine on Radeon hardware, despite using Nvidia's GameWorks middleware.

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Xbox One will get Windows 10 sometime after PCs

Add Microsoft's game console to the list of devices that won't receive Windows 10 until sometime after it lands on PCs.

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Nvidia offers Witcher 3 for free to Titan X users willing to be GeForce guinea pigs

If you're a Titan X user willing to beta test Nvidia's GeForce Experience software, the company has a free copy of Witcher 3 with your name on it.

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Microsoft will charge for Windows 10 upgrades after one-year freebie offer lapses

It's official: If you want to upgrade to Windows 10 without spending a dime, you'll want to do so in the first year after it launches. Afterwards, it'll cost money.

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Malicious keylogger malware found lurking in highly publicized GTA V mod

This hidden mod malware puts the Grand Theft in Grand Theft Auto V.

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10 utterly wonderful technologies you shouldn't buy yet

These are great! But be patient, 'cause they need a bit more time to be fully baked.

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The original Raspberry Pi Model B+ receives a long overdue price cut

The Raspberry Pi 1 Model B+'s original $35 cost would never break the bank, but it lost luster once the faster Raspberry Pi 2 launched at the same price.

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How to install the Windows 10 Preview: Everything you need to know

Try the Windows 10 beta safely: Here are the hardware requirements, and how-to's for preparing virtual machines and partitioned hard drives.

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AMD's next-gen Radeon flagship is insanely small if these pictures are real

Numerous images purporting to show the AMD Radeon R9 390X reveal a water-cooled graphics card that's almost impossibly tiny.

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Confirmed: AMD's next-gen Radeon graphics will use high-bandwidth memory

The rumors about AMD's next flagship graphics card using cutting-edge high-bandwidth memory technology are true, the company confirmed Wednesday.