Not enough power for GF7900 message when there is

  tufnut 10:28 11 May 2007

Recently fitted MSI NX7900GTO to my PC: Intel Pentium 4HT 650 3.4 Ghz to replace the ATI Radeon X600..Before starting I fitted a 550 Watt PSU...A message stated that there was not enough power and that the settings would be reduced...So I fitted a 650 Watt PSU and still get the same message the six pin connector is secure and I have chcked to make sure the card is fitted OK...The card seems to run OK..Over clocking a bit also apears to work OK but I am worried!

Can anyone please help?

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