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.

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Meet Cortana: The ultimate guide to Windows 10's helpful digital assistant

Windows 10's Cortana digital assistant is pretty darn easy to use, but she becomes even more powerful with some tinkering.

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How to disable Windows 10's Wi-Fi Sense password sharing

Wi-Fi Sense in Windows 10 takes the headache out of managing Wi-Fi networks, but some people have security and privacy concerns. Here's how to disable it.

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Windows 10: The best tricks, tips, and tweaks

Windows 10 is chock full of handy, hidden new features worth exploring. Check out the best tips and tricks here.

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The Windows 10 upgrade: Who should do it, who could wait

We answer the question everyone's asking: Should you upgrade to Windows 10? (Spoiler: It depends on what you're using now.)

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Microsoft's upgrade app won't let GeForce GTX 980 Ti owners reserve Windows 10

If you're living on the bleeding edge with a GeForce GTX 980 Ti, you aren't currently able to live on the bleeding edge with Microsoft's new Windows 10 operating system.

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Windows 10: What to expect on July 29

If you're not a Windows Insider, you may have to wait past launch day as Microsoft rolls out the upgrade in waves.

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DirectX 12 FAQ: All about Windows 10's supercharged graphics tech

DirectX 12 is real. Is it amazing? Read on.

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Planning to pass on Windows 10? We want to hear why

If Windows 10 isn't your thing, we want to hear why.

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Here's what Windows 10 won't change: Windows 8's plans to tie you to Microsoft services

Live Tiles and full-screen apps are gone, but Windows 10 will still try to keep you inside its ecosystem.

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AMD's incredibly small, yet insanely powerful Radeon R9 Nano is launching in August

The Radeon R9 Nano video card uses high-bandwidth memory and AMD's powerful Fiji GPU to offer flagship-level graphics performance in a six-inch form factor.

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Asus Strix Radeon R9 390X review: Keeping up with the high-performing Joneses

Sure, the Radeon R9 390X still uses the same GPU as the older R9 290X, but this supercharged version admirably takes the fight to the GTX 980.

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AMD Catalyst 15.7 drivers secretly unlocked CrossFire support between R300 and R200 Radeon GPUs

With the Catalyst 15.7 drivers, AMD's old Radeon graphics cards and AMD's new graphics cards can play nice in the same PC.

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Radeon R9 Fury graphics card review: AMD's furious bid for enthusiast gaming supremacy

AMD's air-cooled counterpart to the liquid-chilled Radeon Fury X doesn't topple its big brother, but the Asus Strix version of the Radeon Fury firmly outpunches Nvidia's GTX 980.

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IBM's crazy-thin 7nm chip will hold 20 billion transistors

Looks like Moore's Law has some life in it yet, though creating a 7nm chip required exotic techniques and materials.

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AMD Catalyst 15.7 drivers add pretty much every feature Radeon gamers begged for

AMD's new Catalyst 15.7 drivers bring a ton of new features to Radeon graphics cards old and new.