The system I am interested (a GT3 mini pc) has a built in 350w power supply.
I am upgrading the graphics card to a Radeon 5770. As far as I know this card requires a 500w-600w power supply. I contacted AVAdirect and questioned them as to how they are offering an upgrade to the Radeon 5770 when the power supply is only 350w.
Here's there response:
"These video cards take anywhere from 70 to 135 watts to operate. Even with
the best CPU we have available the system will only take around 330W total.
We've done extensive testing with these components to make sure it will
operate and continue to do so for years to come."
Are they wrong or are all the other sites requiring you to upgrade to a 500-600w power supply for high end graphics cards wrong?
I did a search on the forums and found out that it is dangerous to run a PSU so close to its maximum output. Why would AVAdirect sell a system that does this?
Yea I would think 350w would be pushing it a bit with that system. Also if you ever want to go CF, you will have to change the PSU anyway. Might want to look elsewhere or even try to build your own. Probably see some decent examples over in the homebuilt section.
While getting a bundled psu, in extreme cases, be prepared for random system crashes, graphic artifacts, etc, & then having to deal with replacements, warranty claims, etc, which, no matter how much you trust your vendor, are always a pain in the ass.
The wise thing, then, would be to buy a quality psu. But therein lies the issue of whether your new psu is compatible with the case (& there's no way of knowing that, unless you buy the system)
The best thing to do would be to go ahead with the purchase w/ the bundled psu; & persist with it until it conks out. Then you could order a replacement. In the meantime, try to find another psu (but a better qulity one) which will fit within the case. The replacement which arrives afterwards can then be used as a backup psu.
350 watts is about the exact amount your system will need to run with a 5770 so it should be fine especially if the manufacturer said it would be OK considering I would imagine they would replace the PSU if it does fail so I am sure they made sure it would be ok before makeing that an option for an upgrade.