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What PSU do I need for this rig?


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Hi, I am looking for a new PSU (moving the current PSU to another rig). My current setup is:


Q6600 OC 3.6Ghz @1.42v.

4GB RAM (2GBx2)

HD 4850

Asus Rampage Formula

Water cooling

X-fi sound card

4 HDD Seagate Barracuda


655 Water pump

Total of 8 120mm fans (5 on radiators)

6 CCL lights


I'm planning to purchase another 4850 for Crossfire. Not sure if the 620HX will hold, if it works what is my headroom? Should I go for the 750?

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