If you end up keeping the the Costco PC I would upgrade the cooler and keep a spare power supply around. I bought an Alienware Aurora after Dell bought the company and the only think I have replaced is the PS and upgraded the CPU from a i7-920 to a i7-980 (the 990 is still way too much $$). Still runs great after all these years.
The real drawback of buying pre-built is the proprietary parts they use (I could not find an aftermarket PS that would fit the AW) and may be stuck. I would seriously consider the generous offer of @mkawa .
The real drawback of buying pre-built is the proprietary parts they use (I could not find an aftermarket PS that would fit the AW) and may be stuck. I would seriously consider the generous offer of @mkawa .