You may very well be able to enable those other 4 pipes,but they may or may not work properly.If you enable them and nothing bad happens,great.But if you enable them and something bad does happen then you may be sol so to speak.However,I did try enabling extra pipes in a 6600gt I had and it made the graphics all screwed up.Fortunately A fresh re-install of the operating system fixed the problem.Worst case scenario,you have to buy a new graphics card.Goodluck.
Dahak
AMD X2-4400+@2.6 TOLEDO
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