No, you will actually want to use the pre-installed DLL because it is the one that provides hardware acceleration. It provides the 1.0 API, and it does provide hardware acceleration.
PS: The 1.1 API spec. added features to the API that would only be beneficial for a hardware implementation. For a software implementation, those extensions mostly introduce inefficiencies. However, this does not prevent an efficient hardware implementation of the 1.0 API by itself. Like the one you have on your Dell.
Vincent, like Rasteroid, is a software rendering implementation.
Hardware accelerated implementations are typically only provided by the companies designing/manufacturing the hardware, as these are the only ones who know how to “talk” to a particular graphics processing unit.