I currently have a HP z600 with dual xeon e5520 processors. I purchased a pair of w5590 xeons and installed them, only to find it won't boot because it says not enought power available. The w5590s are 130w each, but I have obly a very low powered video card drawing power, ther than the ssd dvd drive, and of coursse fans. Shouldn't the 650 watt power supply be enough for this rig?
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