It is possible of course.

You can always check google for benchmarks to calculate the outcome.

like "monero benchmark" "anycoin benchmark" "gtx 260 monero benchmark"


Keep in mind that as soon as an "Altcoin" gets attention that more people will mine it and difficulty will rise and your profitabilty will lower!

for example watch the difficulty graph for the last 6-12months of your favoured coins