Table variables performance

Comparing table variable performance to #temp table performance.

With 100,000 rows in both tables,

     select sum(numberfield) from #t           takes 20ms

     select sum(numberfield) from @t         takes 118ms

I've compared this with different number of rows and it seems table variables are around 5 - 7 times slower

than #temp tables.

Is there any configuration change that can be done to improve their performance or is this what you'd expect ?