Any reason why the x64 version should be slower than x86?

[Trevor_Z]

So, I tested both 64 and 32 bit versions of Dolphin a couple of times on a newly installed Windows 7 64, to see just how faster the 64 one would be, based on past comments... and it turns out it's actually slower.

Am I doing something wrong?

I tested rev 7321 from Emu-Cr, on a Phenom II X2 555, GeForce 9600 GT GPU.

Got around 38FPS on NSMBWii with the 32bit version and 31FPS with the 64bit one.

EFB to RAM, and DL Caching on.

[lamedude]

My guess is because you're using EFB to RAM. 64bit pointers need more bandwidth than 32bit ones which in this case is the bottleneck.