Two completely separate matters:

 

1. Re: SLI. If my motherboard (Specifically the Asus P8P67) has 2 Graphics ports, and I install 1 card per each port, would my motherboard specifically state it supports SLI in order for it to be SLI'able, or would it suffice just to have the Graphics card support them?

 

Also, if I choose to SLI, would it be better to have similar Graphics card or would it not matter if I had one nVidia and the other ATI?

 

2. Second, regarding IP addresses. Lately my hobby has been picking out scientific inaccuracies within the current TV shows (such as Nuclear experimental physicists depicted as knowing how to arm nuclear warheads), but something boggled me for a while. In a lot of the TV shows (yes, I know they are known for exaggeration) they depict that they were able to track the location of a computer by back tracking an IP address, pretty much almost instantaneously, and were able to give an exact physical address.

 

A. Is back tracking like that possible? Is it that fast?

B. Is it possible, like in the TV shows, to be able to pin point your physical address?

 

Assume legalities are not an issue here.

In theory it is possible to backtrack an ip to an exact-ish location as long as that ip is in current use at that location, as soon as it ceases to be used (eg go offline or changes to dynamic ip) you'd only be able to back track to a rough geographical area at best.

 

But it is certainly not that easy at all and probably not quite so accurate as a precise address. I think shows tend to lean more towards Ip used to back track to a users computer then use the computers inbuilt location tools (most modern computers can locate themselves using wifi triangulation etc.) to an exaggerated gps-style degree to report the location. In the same vane as how a phone company can remotely activate gps/mobile signal triangulation tracking on your phone at police request (in most countries) to allow you to be traced.

.