That depends on your hardware. You will get the same amount of coins over time as with a pool, but the variance will be decreased.

If you are going to get a block once every week on average, you might actually get four in one week and none for three weeks. (And of course difficulty could change in that one month period.)

A hash computation is like going and buying a lottery ticket and letting the computer pick the random numbers. More tickets you buy, greater your odds of winning.

A mining pool is everyone "buying" tickets as fast as they can as a group and splitting the proceeds.