Chanc_

It's a stable, unforgeable currency accepted all across the globe with complete anonymity for the user.
 
It also isn't linked to any single country or person so investors and users feel safe with it, for example the Obama death hoax or the more recent etherium crash when a rumor surfaced about the founder dying.  Bitcoin has no figurehead therefore cannot be swayed by said figure heads death.

Graphics Cards have NOTHING to do with Bitcoin mining, Bitcoin hasn't been profitable on GPU's for a LONG LONG time, GPU pricing has nothing to do with coin value, coin value is like every other currency or "stocks" it fluctuates based on a bunch of factors, like the demand for the coin, the difficulting to mine it and now that Bitcoin went through the fork and split into 2 currencies all the concern of what would happen there is gone so people are now making a run at bitcoin again causing it's value to go up, just like what happens in the stock market, it's 99% speculation, I doubt anyone truly understands it, even people that talk like they understand just use the words, but I doubt they could really explain what all those fancy words actually translate to in terms the average joe could understand.

Personally I'd recommend using Claymore and Mining either ETH, EXP, UBIQ or DBIX with your 480 if you want to mine. Nicehash is easier to setup but usually has lower hashrates and a higher fee than just mining the alt-coin and then converting it to BTC on an exchange.

Also, you will want to make sure your cooling is sufficient on your card for mining if you want your card to live a good amount of time. Try to keep your card under 75C and the fanspeed on the card under 50%. you can check and manually set these things with MSI Afterburner to test things out. Above 80C and you're gonna start hurting the overclocking ability of your card in the longterm and above 66% fanspeed all the time will heavily wearout the fan as well. It would be a good idea to have some good case airflow if you wanna mine with your personal PC