Dirty Reads in Procedure

Hi All,

Please Let me know which one is better in terms of performance:-

1.If I am doing dirty Read many time in one procedure 

for example:- select column1 from table1 (nolock)where id = 5

2. Doing dirty read at one time and fetch all column which is needed and put into table variable

for Example:- select column1,column2 from table1 (nolock)where id = 5

and put all this in table variable 

which one is perform better?

I think 1st option is better because we are doing dirty read and nothing to impact searching data many time 

and we have shortage of ram also.

Thanks,