GTX 550 Ti Wattage

I own a GTX 550 Ti and I came across something rather interesting.

These websites say that my GTX 550ti's max wattage is around 250-300W

http://www.bit-tech.net/hardware/graphics/2011/03/15/nvidia-geforce-gtx-550-ti-1gb-review/10
http://www.anandtech.com/show/4221/nvidias-gtx-550-ti-coming-up-short-at-150/16


Then these websites say that it runs at 116W

http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-550ti/specifications
http://www.hwcompare.com/9745/geforce-gtx-260-vs-geforce-gtx-550-ti/


So naturally I'm curious which one is right. I mean there is more than a 100W difference...
4 answers Last reply
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  1. top 2 are for the whole system, bottom to just the GPU.
  2. rgd1101 said:
    top 2 are for the whole system, bottom to just the GPU.


    How do you know? Just for future reference.
  3. The rated TDP is actually wrong. The 550ti actually draws 140watts so get a decent 450watt PSU atleast.
  4. jaideep1337 said:
    The rated TDP is actually wrong. The 550ti actually draws 140watts so get a decent 450watt PSU atleast.


    Oh ok, I already have 500w power supply and it's running fine, it's just I wanted to make sure i had room to upgrade my cpu and motherboard later down the road.
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