Articles by John Loeffler, Components Editor

John (He/Him) is the Components Editor here at TechRadar and he is also a programmer, gamer, activist, and Brooklyn College alum currently living in Brooklyn, NY.

Named by the CTA as a CES 2020 Media Trailblazer for his science and technology reporting, John specializes in all areas of computer science, including industry news, hardware reviews, PC gaming, as well as general science writing and the social impact of the tech industry.

John has a Bachelor’s degree in English and is currently in the wrapping up a Master’s program in Computer Science, where he spends his evenings building digital circuits, multiboxing Linux kernels, and coding shell scripts.

You can usually find him on Bluesky (@@johnloeffler.bsky.social) where you’ll get hot takes on stuff as well as reposting content that is almost as good as the worst content you used to be able to find on Vine.

Articles by: John Loeffler

An AMD Radeon RX 7900 GRE from PowerColor on a desk with its retail packaging

AMD Radeon RX 7900 GRE: AMD's China-only card goes global—and upends the midrange market

By John Loeffler last updated 1 May 25

Best in Class

AMD battles Nvidia's RTX 4070 Super for the midrange crown with the global release of the Radeon RX 7900 GRE.

An Asus RTX 4070 Ti and an Nvidia RTX 4070 against a two toned blue background

RTX 4070 vs 4070 Ti: Nvidia's latest graphics cards battle for gamers' respect

By Aleksha McLoughlin last updated 29 April 25

We're comparing the Nvidia RTX 4070 vs 4070 Ti to help you find the right graphics card for your needs and budget.

An AMD RX 7800 vs 4070 from Nvidia on a two tone background

7800 XT vs 4070: the battle for midrange bragging rights

By John Loeffler last updated 29 April 25

We put the RX 7800 XT and the RTX 4070 head-to-head to see which is the best midrange card for you.

An Nvidia RTX 4090, one of the best Nvidia graphics card picks, against a green techradar background

The best Nvidia graphics card in 2025: top picks from Team Green for gaming, creating, and more

By John Loeffler last updated 28 April 25

Updated All the best Nvidia GPU picks, from the best for 4K gaming down to more affordable budget alternatives.

What is DLSS?

By John Loeffler published 28 April 25

If you're wondering 'What is DLSS?', I'm here to answer all your questions about this groundbreaking gaming technology.

An Nvidia GeForce RTX 5070 on top of an RTX 4070 Super

What is Resizable BAR?

By John Loeffler published 23 April 25

I'm here to explain what Resizable Bar is, when you should use it, and more.

Several of the best external hard drive picks on a desk with a laptop

Best external hard drive of 2025: Expert picks based on real-world testing

By John Loeffler last updated 15 April 25

Updated We tested out the best external hard drives for fast transfer speeds and storage capacity.

Fastest external SSD of 2025

By Desire Athow last updated 14 April 25

Updated We've tested the fastest external SSDs for speedy storage expansion.

One of the fastest external hard drive picks, the Seagate Portable 4TB External Hard Drive

Fastest external hard drive of 2025

By Desire Athow last updated 14 April 25

Updated We put the fastest external HDDs to the test - perfect for boosting performance and storage capacity

Best VoIP headset of 2025

By John Loeffler last updated 3 April 25

We tested out the best VoIP headsets for professionals

Best screen recorder of 2025

By Steve Clark last updated 1 April 25

Updated We've tested the best screen recorders for PC and Mac - and these are our top picks for capturing your screen, recording your camera, or streaming.

An Nvidia GeForce RTX 4080 in a testbench in a testing lab

How we test graphics cards at TechRadar

By John Loeffler published 30 March 25

Graphics cards require extensive testing to measure their performance. Here's how I test graphics cards for TechRadar's GPU reviews.

An Nvidia GeForce RTX 5080 resting on an RTX 5090 on a gray crafting mat.

How to choose a graphics card

By John Loeffler published 29 March 25

I've spent hundreds of hours testing GPUs, and I'm here to show you how to choose a graphics card for your PC.

A Samsung 9100 Pro sitting on top of its retail packaging

Samsung 9100 Pro review: Samsung's first true PCIe 5.0 drive is the best there is

By John Loeffler last updated 26 March 25

Recommended

The Samsung 9100 Pro is Samsung's first 'true' PCIe 5.0 drive, and it offers best-in-class performance across the board.

I test SSDs for a living, and this is the best SSD deal I'd spend my money on this week

By John Loeffler published 26 March 25

Grab the Samsung 990 Pro for a huge discount right now

Best Adobe Audition alternative of 2025

By Kieron Moore last updated 21 March 25

Updated We test the best alternatives to Adobe Audition for music and podcast production

Best photo editing PC of 2025: Our top-rated picks for photographers and creators

By Steve Clark last updated 13 March 25

Updated We tested and reviewed all the best computers for photo editing

An AMD Ryzen 9 9950X3D on its retail packaging

AMD Ryzen 9 9950X3D review: truly the best there is

By John Loeffler published 11 March 25

Best in Class

The Ryzen 9 9950X3D offers outstanding performance at every level, but its price will definitely put some people off.

The Apple MacBook Air next to the Dyson Supersonic R and new AMD GPU

ICYMI: the week's 7 biggest tech stories from the best tech at MWC to Apple's new iPads and MacBooks

By Hamish Hector published 8 March 25

The week's 7 biggest tech stories from MWC, Apple, Meta and more for March 8, 2025.

An AMD Radeon RX 9070 XT made by Sapphire on a table with its retail packaging

AMD Radeon RX 9070 XT review: delivering what the market needs with stunning performance at a great price

By John Loeffler published 5 March 25

The AMD Radeon RX 9070 XT is the best graphics card of this generation for gamers, especially those disappointed by Nvidia's latest offerings.

A Mac Studio display, one of the best monitors for Mac Studio, against a techradar background

Best monitor for Mac Studio of 2025: top displays for Apple's creative workstation

By John Loeffler last updated 4 March 25

Updated We reviewed the best Mac Studio monitors for creative professionals.

I really wanted to like the Nvidia GeForce RTX 5070, but it broke my heart and it shouldn't have to break yours, too

By John Loeffler published 4 March 25

The Nvidia GeForce RTX 5070 offers very little over the RTX 4070 Super or competing cards other than Multi Frame Generation.

A chip wafer manufactured at Intel Foundry

Can 18A save Intel from being devoured by its rivals – and Wall Street?

By John Loeffler published 24 February 25

Intel's 18A process technology is finally ready, but will it be enough to fend off the wolves?

Devolo Magic 2 Wi-Fi 6 Mesh on a wooden desk

Best powerline adapter of 2025

By Steve Clark last updated 24 February 25

Updated The best powerline adapters provide a simple route to extending your home network.

A Dell 6K monitor against a techradar background

Best Apple Studio Display alternatives of 2025: top monitors from 4K to 8K

By John Loeffler last updated 24 February 25

Updated We tested out the best alternatives to the Apple Studio Display

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