Here are some of the best browser for computers using 64-bit Operating System.
MaxthonThis browser is really light, and smooth. Easy to navigate with the added features on the side.
The best feature I like about Maxthon is the SkyNote. It allows you to multi-task by taking down notes while browsing and it automatically save through the clouds like SkyDrive which allows you to access it anytime you need it.
With regard to the browsing experience, it's quick to play videos, browsing is smoother, and the feel looks lighter. For all 32 bit version of browser, I believe this one will rule.
WaterFox
One of the advantage for WaterFox browser is that, it's really fast since it's dedicated to x64 bit. If you're browsing multiple sites, we'll this one's for you. You will notice a big difference compared to the traditional 32bit firefox browser. For me, this has a slight edge faster than Chromium 64-bit.
Chromium 64-bit
Like Waterfox, Chromium 64-bit is a dedicated browser for 64-bit operating system. It's also superfast and is very useful if you're browsing multiple website at the same time. The browsing is really smooth and fast to open web pages. It's twice the speed of google chrome.
This browser looks exactly like firefox. This is also dedicated for 64-bit operating system. Overall rating for this is the same with WaterFox.
Download link Resources:
WaterFox
Pale Moon
Maxthon
Chromium 64bit