Just before CES Allyn showed you the process of modifying the ASUS VG248QE to support NVIDIA G-Sync variable refresh rate technology.  It wasn't the easiest mod we have ever done but even users without a lot of skill will be able to accomplish it.  

But at the NVIDIA booth at CES this year the company was truly showing off G-Sync technology to its fullest capability.  By taking the 3840×2160 ASUS PQ321Q monitor and modifying it with the same G-Sync module technology we were able to see variable refresh rate support in 4K glory.

Obviously you can't see much from the photo above about the smoothness of the animation, but I can assure you that in person this looks incredible.  In fact, 4K might be the perfect resolution for G-Sync to shine as running games at that high of a resolution will definitely bring your system to its knees, dipping below that magical 60 Hz / FPS rate.  But when it does with this modified panel, you'll still get smooth game play and a a tear-free visual experience.

The mod is actually using the same DIY kit that Allyn used in his story though it likely has a firmware update for compatibility.  Even with the interesting debate from AMD about the support for VRR in the upcoming DisplayPort 1.3 standard, it's impossible to not see the ASUS PQ321Q in 4K with G-Sync and instantly fall in love with PCs again.

Sorry – there are no plans to offer this upgrade kit for ASUS PQ321Q owners!

Coverage of CES 2014 is brought to you by AMD!

PC Perspective's CES 2014 coverage is sponsored by AMD.

Follow all of our coverage of the show at https://pcper.com/ces!