Yes, but it gets limited a little bit, that you can probably only connect from website server list.
Version 1:
 - See older tutorial: 
https://youtu.be/fEMRvGOO5dc?t=2m24s
 - Go 
http://crymp.net/master.php
 - click JOIN on any server suitable your Crysis version
 - console application launches and asks you to select Crysis.exe
 - go to your Crysis folder (most likely C:\Program Files(x86)\Electronic Arts\Crytek\Crysis\Bin64
 - select Crysis.exe or Crysis64.exe
 - wait until you get connected
Version 2:
 - on your desktop is Crysis-Multiplayer shortcut or something like that
 - click it Right and go to Properties
 - in Target path, change 
Bin32 to 
Bin64 , so it looks like ........\Bin64\Crysis.exe -mod sfwcl
 - click Apply and OK
 - run game through this shortcut
 - open console
 - write "0" (without quotes) to get server-list
 - type number of any server to connect
Please let me know whether any of these works, I don't have 64bit OS, so I could never test, it's only theoretical.