Magento

hi everyone,
I’m new magento.
I have question about speed:
Ex:
I have a page: {{block type="catalog/product_Encrypt" name="test" template="bnm/RelatedProductHistory.phtml"}}

and a page: {{block type="catalog/product_Encrypt1" name="test1" template="bnm/RelatedProductHistory1.phtml"}}
{{block type="catalog/product_Encrypt2" name="test2" template="bnm/RelatedProductHistory2.phtml"}}
{{block type="catalog/product_Encrypt3" name="test3" template="bnm/RelatedProductHistory3.phtml"}}
{{block type="catalog/product_Encrypt4" name="test4" template="bnm/RelatedProductHistory4.phtml"}}

Both have same data

which does speed better?

and when I use 2 columns left or right: my site always load left/right before, and 1s or than it load all
what’s problem?

Thanks all,
Dong