I need some advice regarding mining using Desktop. I can continuously run my desktop for up to 20 hours a day. But please tell me whether I should go for Bitcoin mining, or altcoins such as Dash or Litecoin. Which one is more profitable?
Did you read the rest of this topic before making this post?
It has been pointed out by tons of people that you can not make a profit mining for BTC using your desktop.
Litecoin uses scrypt, there are ASIC's available, so you can not make a profit mining Litecoin using your desktop.
Dash uses X11, baikal generated an ASIC to mine X11, so you can not make a profit mining Dash using your desktop.
Since you asked the question, you'll lose the least money by mining Dash, since the X11 asic is pretty scarce, so using a GPU might still give you a small negative profit, while mining scrypt or sha256d will give you a big negative profit.
What you mean by negative profit? If I am getting electricity for free, then there will be no loss, right? Anyway, I don't care if I get any profit or not. Mining will be fun, and I want to experience it.