Whats the stable temperature for 8800 Ultra.& what is the danger level.

I need an opinion on hardware mainly Processor and mobo.

He is my situation.3 Monts ago I bought AMDX2 4600+ and Asus Crosshair mobo.And I am not realy happy with the performance so I want to upgrade.Since the barcelona is coming out soon I was thinking of just upgrading it.
But the price might be expensive so I was thinkin better I go for Intel e6600 and change my mobo to a p35 chipset cuz what I have read in near future amd will change its socket to AM2+ for phenom procs and I still cant upgrade anymore but Intel still supports 775 even with the new 45 nanometer proc with the p35.So I don't know if I should just upgrade to barcelona or change to intel setup.
Its so hard to keep up with the technology nowdays ..