Also, only some of the projects here find prime numbers. Some of the projects are sieves, which will never, be definition, find a prime number. Their purpose is to rapidly eliminate composite numbers from the pool of candidates that are to be tested for primality. They help the prime finding process, but don't themselves find prime numbers.
So, as Pyrus said, if you want to find your first prime, your best bet is to run PPS-LLR or SGS-LLR.
If you want to put your GPU to work looking for prime numbers, the only GPU projects that find primes are GFN (short or long). On your 570, the short WUs should take about 3 hours and the long worl record WUs about 6 days. (Note that at this moment, the GFN short WU queue appears to have run dry, but that should be fixed soon.)
My lucky number is 75898524288+1