Linux Live CD runs slowly in VirtualBox

Linux Live CD runs slowly in VirtualBox

So, I googled for solution, and found this https://forums.virtualbox.org/viewtopic.php?f=3&t=59456

Another problem is that there is no x64 enabled in VirtualBox, despite running Windows x64

Why does virtualbox only have 32-bit option, no 64-bit option on Windows 7?

Why does virtualbox only have 32-bit option, no 64-bit option on Windows 7?

I have downloaded and installed the newest virtualbox 4.3.20 for my Windows 7 (64-bit OS), but when I want to install 64-bit Linux, the New->Create Virtual Machine only displays 32-bit option, no 6…