Hi Bunty,
         I am SBI PO, I am also Computer Graduate and has 
worked with an IT company for 1.5 years. Due to some reason 
I had to decide to work in public sect/Govt. org and left 
job. Believe me Salaries in Banks are negligible.  For 
working 10 years continuously in a bank you will be able to 
get hardly around 30 to 40k while working for private firm 
or switching may get you double of that, moreover doing job 
as a banker is burdensome cuz there is a lot of trouble
(sometime you may get job to market your bank's product or 
to find customer which is shear marketing job) managers 
never get to home before 7:00 and you are responcible for 
keys too. sometime the loan you have given to the person 
change into NPA, so it will be your mistake for becoming a 
LOAN into NPA and you may get a Memo for that(booked for 
five years->no promotion) suppose if you get 2 or 3 memos 
in your bank life, that's enough for you to be at same 
position for atleast 15 to 20 yrs.
If you are thinking to join as IT Manager, take my advise 
you are going to ruin your career, I'm with IT officers, 
they do nothing except making salaries + mending computers 
+ making payments to private venders like Hcl, ncr, 
Datacraft. and also they are always be asked to set emails 
and resetting password. nothing else cause SBI and other 
banks have outsourced management of their whole computer 
systems and networks to private companies(surprisingly they 
are happy doing this). 

Salary after wage revision : 14500 + 6000(other allowance) 
HRA is Negligible hardly 8%

If you are desperate for govt job/psu/job surety and are 
not getting other class-2 jobs than bank PO is your last 
resort.