For an in-proc COM component, a vtbl interface is generally in the order of 100 times faster than a dispinterface (although it depends on type of arguments in the function). For a out-of-proc component, the overhead of marshalling is more significant than overhead of IDispatch::invoke and so a vtbl interface is generally 2.5 times faster than a dispinterface. For a remote component however, it doesn


Electric Vehicle Battery Breakthrough
The prices of lithium-ion batteries have seen a considerable reduction, with the cost per kilowatt-hour dipping under $100 for the first occasion in two years,