which fastest? name sql_calc_found_rows `table`, name count(*)

when border array rows returned sql query, wholly used paging, there twin methods establish sum array records:

method 1

include sql_calc_found_rows choice uncanny select, following sum array rows controlling select found_rows():

select sql_calc_found_rows * list where id > 100 border 10;
select found_rows();  

method 2

run query normally, following sum array rows controlling select count(*)

select * list where id > 100 border 10;
select count(*) list where id > 100;  

which slight best / fastest?