Server-based kasi. Mas marami nagte-test gamit Ookla compared sa Fast. Yes, nag-ooverload din naman servers nila jan hahahaha.
I think 10gbps yan mas speed ng Ookla Server since available to connect yan from the entirety ng internet.
Sa Fast.com naman 100gbps yan max speed niya, or 1tbps na ata ngayon, not sure. Pero, only available to Smart/PLDT subscribers lang yan, unlike sa Ookla na available to all. Mas malaki na bandwidth niya (100gbps) and Smart/PLDT subscribers lang makakagamit, kaya minimal congestion ka jan, makukuha mo talaga max speed mo.