There isn't even a chromium x86-64 for windows even, so until that happens, don't expect it from nw.

@damianb There is one: http://commondatastorage.googleapis.com/chromium-browser-continuous/index.html

This is not a good idea. Chromium does not officially support Windows 64-bit. What you're looking at is a dev/experimental build. Not only are there are quite a few bugs still filed for 64-bit but there are essential features still missing from Chromium Win64, this would create an incredibly instable build and cause issues to be filed for node-webkit that are actually upstream in chromium's source. This wastes a lot of time.

What still doesn't work in Windows 64bit:
NACL
PPAPPI plugins
DevTools
webrtc/websockets
SVG has many known crash-able bugs
Hardware accelerated video/audio support
Hardware acceleration
Memory mapped files
Full JIT optimization on v8

What has bugs:
http://code.google.com/p/chromium/issues/list?can=2&q=win64&sort=-modified&colspec=ID%20Pri%20M%20Iteration%20ReleaseBlock%20Cr%20Status%20Owner%20Summary%20OS%20Modified

Until chromium officially announces its supported there's no point in trying to build/distribute this.

@damianb @be5invis

As a exercise I built a 64-bit Windows node-webkit version (0.8.1). If you want to try a beta it out, feel free to file any feedback here: trueinteractions#89

Performance seems OK.

Download is here: http://www.trueinteractions.com/tint_preview_x64.zip

close as duplicate of #296