The difference is the Elite has 6 TECs to help with the cooling. It would definitely provide lower temperatures than the non-Elite, but your current setup should be sufficient for keeping a Q9450 cool.
__________________ Project: Black and White i7 920 D0 | 3 x 2GB DDR3 | EVGA X58 SLI LE
XFX 4890 | Corsair HX750 | Corsair Obsidian |