I perfectly get your point buddy. But there must have been a reason for the under rating right. They are playing safe. Not contesting your say. Thanks for the link. It equivalent to OC'ing the PSU, which I would not.
Up to the information seeker what he wants to do.
I totally agree with asigh. It is better to go with the rating given by manufacturer than to push the PSU to the limits.
you get a 450W PSU, you make sure that you draw 450W or less power from it.
You have a rig that takes 550W, then you better get a PSU that is RATED to give 550W power.
Thanks guys for the suggestions .I agree with that...we should consider the safe rating given by the manufactures. But even with an OC'ed 9600GT, the system's total power consumption wont go beyond 500W+. If a single 9600GT needs a 500W+ PSU, all those people with high-end GPUs must use some 1kW+ PSUs.
My whole point is that, there is no point in suggesting and using higher rated PSUs without the need for it.
To me it does not make much sense. With a poor 600W unit like the CM Extreme 600W, the probability of PSU failure is much much higher at lower loads than the rated 600W. With VX450W, the PSU can easily take loads higher than its rated output. In real world there are like less than 5% of rigs which take 600W power. Most rigs consume much much lesser. Even an i7 rig which is overclocked along with a great GPU takes about 350-450W power as read in an article at Guru3D.^^
The VX450 is an excellent PSU. But as per the manufacturing company it is rated to support 450W of equipment. Tests have proven that it 'can' support upto 570W. At this condition it is being heavily stressed. Personally when pertaining to PSU I am not in favor of this model.
Your PSU is calibrated to support 600W. Which is good. With all your equipment you will have over head, and not be stressing the PSU beyond its 100% capacity. But if you follow the vx450--->570W model, you can make do with that too, but you are running the PSU beyond its certified/tested strength.
Constantly running it at vx450--->570W, there is a higher probability of PSU failure. Please note, not saying 'it can happen', but the probability goes up. With your 600W, the probability is much lower.
Hope this makes sense. You have a good PSU. Enjoy.