Can you find out a server spec's without talking to the host or
having any correspondence with them ..

iprober.php Upload to the server and it gives all the server information.

If you don't trust your host, find a new host. There are far too many available to spend time worrying about one.

The php function phpinfo() can tell you some details about the server. If it's Linux/FreeBSD/Unix, the shell command 'dmesg' will detail basically all of the hardware on the box.

OK cool, no I was just wondering ..

There is also PHPSysInfo
http://phpsysinfo.sourceforge.net/

Login to server via ssh.
Run:
dmesg
lspci -v

Originally posted by andreyka
Login to server via ssh.
Run:
dmesg
lspci -v
That kind of relies on your current host having enabled SSH for you... previously mentioned methods are better imho.

If he can binshell php, then can view output.