Accelerated weekly payments of $500 will save you significantly amounts of interest over paying $2,167 per month.  Even accelerated bi-weekly payments of $1,000 will yield substantial benefits.  But the equivalent amount paid on a monthly basis is certainly not virtually the same thin.

In addition to the benefit of 52 payments a year accelerated weekly also means you are drawing down your mortgage every week rather than every month.  Over a 25 amortization period that amounts to about $22K in interest savings on a $150K mortgage.  The reason - interest is computed daily regardless of your payment frequency.  

So yes if you could pay hourly it would be even better.