Was it causing heavy CPU usage @Chris Timothy ? There are a couple of graphical things (built-in CSS animations) that I've noticed do that on a few browsers, despite supposedly being 'seamlessly' integrated into modern browsers.
I was gonna say, my 11 year old CPU handles the site fine... but it's an i7-860 so it still packs more punch than most modern laptops on the cheaper side offer.
You may begin noticing some new thread prefixes. We're using Social, Official (for the PD Index mega-threads like the Big & Dandies), and Warning. We may implement some others to categorize thread types, but haven't decided yet.