[synnix]

I recently had an 8600gt go bad on me after three years of faithful service. Its being replaced with a BFG geforce gts 250, already purchased for a price that beat out everything else.

This particular card requires a [combined] rating of 24A on the +12v rail, and a single 6-pin connector.

The generic psu (no brand labeled, came with el cheapo power-up case) I'm running on for the moment is 450w and 25A on a single +12v rail. I wouldn't trust it with my new investment, and barely trust it with my newer build. I can't get a new psu just yet. A friend sent me one via mail, but they didn't know all the specifications and didn't have whatever paperwork would have come with it. I couldn't locate a non-broken link to the company's website.

To get to the point, it is an Ultra xFinity 800w. Model# ult-xf800g. It has four +12v rails, each rated at 20A, combined wattage 660. There are two 6-pin connectors, one labeled "+12v 3" and the other "+12v 4". Are these all single, then? Or combined?

I need to know if its worth the risk connecting my new card to them. If not, I'll just wait and get the corsair I have my eye on. I would, however, like to have a graphics card again.

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The amperage is shared between multiple +12v Rails. If you look at the diagram on Ultra's Website HERE you can see that. Notice the 660 watt is spread across all +12v rails.

Using the equation Volts x Amps = Watts you can divide 660watts by 12volts to get a total(combined) of 55amps. It is a fairly beefy power supply. You should be able to run the GTS 250 with no problems.

I'd still recommend a Corsair PSU though, as it is 80 plus certified and will provide clean and stable power to your system, especially when under load when gaming.

I hope that helps.

Edited by Ferrari, 19 February 2010 - 05:31 PM.

[Ferrari]

The amperage is shared between multiple +12v Rails. If you look at the diagram on Ultra's Website HERE you can see that. Notice the 660 watt is spread across all +12v rails.

Using the equation Volts x Amps = Watts you can divide 660watts by 12volts to get a total(combined) of 55amps. It is a fairly beefy power supply. You should be able to run the GTS 250 with no problems.

I'd still recommend a Corsair PSU though, as it is 80 plus certified and will provide clean and stable power to your system, especially when under load when gaming.

I hope that helps.

Edited by Ferrari, 19 February 2010 - 05:31 PM.

[synnix]

That helps perfectly. I'll definitely be getting the corsair at some point - this one won't fit in the case that's also set as a future purchase. Just have to solve the lack-of-employment issue first. I wasn't going to turn down a free psu!

[Ferrari]

I wasn't going to turn down a free psu!

I don't blame you!

According to the link I gave you, it is 78% efficient, which is close to 80. I've seen worse, trust me.