I'd be happy to help you create an HTML page about GPUs. It looks like you've started with some HTML structure and CSS styling. Let's complete the page with more content about GPUs. I'll use the HTML code block to write the full HTML file, including the content and completing the CSS you've begun.

This HTML file creates a simple, informative page about GPUs. Here's a breakdown of what I've done:

1. Completed the CSS in the <style> tag, adding styles for images and creating an info-box class.
2. Created a basic structure with <header>, <main>, and <footer> tags.
3. Added several <section> elements to organize different topics about GPUs.
4. Included an image placeholder using the /placeholder.svg URL with specified dimensions.
5. Created an unordered list for GPU applications and factors to consider when choosing a GPU.
6. Added an "info-box" with an interesting fact about GPUs.
7. Included a simple footer with a copyright notice.

This page provides a good starting point for information about GPUs. You can further customize the content, add more sections, or include actual images to make it more comprehensive and visually appealing.

I'll add a section with links to some popular websites related to GPUs. I'll use my ability to quickly edit to add this new section to our existing HTML file.

These changes will add a new section to the page with links to useful GPU-related websites. The added CSS will style the links to make them more visually appealing.

Here's a brief explanation of the changes:

1. We've added a new <section> with an unordered list of five popular GPU-related websites.
2. Each link is set to open in a new tab using target="_blank" for better user experience.
3. We've included rel="noopener noreferrer" for security reasons when opening links in new tabs.
4. The new CSS styles the links in a blue color (#0066cc) and removes the default underline, adding it only on hover for a cleaner look.

These additions will provide visitors to your page with resources for further reading and research about GPUs. The websites listed cover a range of topics from manufacturer pages (NVIDIA and AMD) to comparison tools and review sites, giving a well-rounded set of resources for GPU enthusiasts.