Kabuto: I went to a computer store today. Tell him I need a video card that has a 300W power supply requirement. Sure he says. We're getting them in tomorrow. One $65 card and another $90 for a 500W power supply. Wait what? I said 300W power supply. Is it rated for 300W? Yes he replies. But I'm not covering the warranty if you don't buy a power supply. What?
I'm getting pretty annoyed at this point. He then asks what processor I have. Answer with Q6600. He goes on how 300W won't even power the processor alone. What? What the hell has it been doing for the past two and a half years then? My parents certainly haven't been staring at a blank screen for two and a half years. The conversation basically ended there. I understand safety factor but there's no way in hell I need a 200W safety margin especially given the card he's selling has a lower max power usage than the card that came with the pc.
These guys drive me insane with their dishonesty. Yesterday HP wanted to charge $117 for a replacement 9500GS (a scaled down 9500GT) video card. The card isn't even worth half that.
Since it's my parents PC, they don't want to order online. So I'm stuck talking to assholes all day.
For them, it's all about sales coupling. You buy a camera? They'll try to get you to buy
a) memory cards
b) a bag
c) lens cleaning kit
d) a tripod
e) extra batteries
etc.
It's how they work.
And in a way, I can't truly blame the salesperson for trying to get you to buy a 500W PSU because there's a chance he was playing it safe. Most people (including salespersons) are woefully ignorant about PSUs in general and think that any cheap 300W/500W PSU is fine. You'd be surprised how often an inadequate PSU is the source of crashes - because PSUs work with peak power efficiency meaning that 300W means it can perform at 300W at peak moments for brief periods, not for extended use. And hardware wattage on the box is very unreliable as well and often shows the average usage - not when under stress. It's better to be safe than end up with a system that locks up under load ...