.NET 4.0 is slower than earlier versions, is that true?

Question

Possible duplicate:
Is the .NET 4.0 runtime slower than the .NET 2.0 runtime?

Hello everybody,

We plan to switch to the .NET framework 4.0 soon ... I don’t remember the link or link, but lately I read that the latter structure is a bit slow in performance compared to its predecessors.

It's true? Has anyone done any tests or had some good arguments to support this?

Answer 1

.NET 4.0 . Microsoft , . BCL, . , , GC 3.5sp1, 4.0. , , , . , .

, .NET 4.0 , (, TPL). , , , .

. .NET 4.0 , . , . , SO , . .

Answer 2

.NET 4.0 VS2010. , , , WPF (afaik) . , WPF . , WPF , .