On windows systems XP and newer... yes it is. I read the boxes :P

what is beta?!?!?!?!?!?!?!?!?!?!?!

System:
Microsoft Windows XP
Professional
Version 2002
Service Pack 2

Computer: (Is this the processor?)
Intel(R)
Pentium(R) 4 CPU 2.00GHz
2.02GHz, 512MB of RAM

My computer runs on 32 bit (Highest).


For version 45.2, files sse1 and sse2 worked but kept rebooting/restarting my computer after a few seconds of playing. The sse3 file did not work (it wasn't supported by my computer).

For version 46.1 BETA, file sse1 kept rebooting/restarting my computer after a few seconds of playing, sse2 was also the same but only once did it reboot/restart my computer after 1 minute of playing (that was because I removed the toolbars from my internet browser). I then just deleted TPT from my computer becuse my computer kept rebooting/restarting.

@Simon
https://powdertoy.co.uk/Download/Test/powder-win32.zip
This website doesn't even work for some reason. When I put it into the URL, a page appeared saying "404 - Not Found".

Windows 7 Starter
Packard Bell (laptop)

SSE - works fine
SSE2 - works fine, but takes long to load
SSE3 - unknown, but I'm guessing it's the same as SSE2.

Question: What may make SSE2 long to load?

EDIT: This bug is on both 45.2, 46.1 and 46.2.
EDIT2: Actually, I don't know about 46.2.