It's easy for SEOs to get bogged down in the details and forget that Google's algorithm is all about relevance to the user. They desperately want anyone who searches to use Google, and to ensure that, they need to provide the most relevant results. So let's put this to the test... would a dedicated IP vs. a shared IP affect relevance to the user in any way? As far as I know, users don't know and don't care, so it's a pretty safe bet this has no impact on SEO.
