Which to choose an EF or EF + Repository pattern?

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C#

.NET

.NET4

Can any one help me to decide that with Entity Framework do I need to implement the Repository Pattern if the testing is not my concern? OR EF alone is sufficient?

I had searched a lot and till now concluded that the repository pattern is only needed when you want your project to be testable and when there is a possibility of changing the data-store in future so that we can get a isolation.