Power Supply good or bad?

im running a 850W power supply with a AD x6 core, and 2x MSI 5830 twin frozers, 2 hard drives and 2 200mm fans, and 4 120mm fans, is this enough power? i notice in AMD overdrive my second card just stays at 300mhz and it should be at 800mhz

I think that this calculator will give you a precise answer. If you do not have all the informtion, you can download and use speccy for the additional information
eXtreme Power Supply Calculator
http://www.piriform.com/speccy

i tried that, its just im worried tat my PSU is failing or isn reaching capasity

What I know from here is that you have enough power. That would have been the results of the test that I supplied. To see if your psu is a problem, a $20 meter is required to test.
Power Supply Test - How Do I Test the Power Supply in My Computer? - PSU Test

Whats the requirements for ATI crossfire x3? will a 850w take it?

I hAd my sli gtx260s overclocked, q6600 overclocked in a antec 900 case.

My APC UPS reported 520W running everything 100% load.

The ati cards and x6 are less power hungery than my setup.... You'll max out bout 500W i bet.

What psu is it? A lesser quality won't put out 850, but more like 780-800W.

its a OCZ GameXstream OCZ850GXSSLI

OZC 850W powersupply

Youre all good.

While OCZ aren't my top ranked psu, its far from being crap.

It'll be okay... Whats telling you your gpu is stuck in 2d mode?