Slightly overloading the PSU?

[Demiqas]

Hey, so I was thinking about crossfiring 260x (I already have one so it's cheap to do so) on a 450 watt PSU. I'm just not sure if it would work. My CPU is an un-overclocked 8320 and I have a 5400 rpm drive + 1 ram module.
I think it would be slightly above what my PSU can handle, but would that really be an issue? The games I play won't stress both GPU's to 100% so there's that. But if it does overload, what would happen?

My psu is a branded Coolermaster G450M which is bronze + rated.

Would it overall be a good idea to do it or could it have horrible consequences? I only game a few hours per day too, max.

 

[MongGrel]

Probably a bad idea.

Does your PSU even have the cables for that ?

450 would be pushing it a bit I would think, or near the edge.

I forget what a 260X pulls solo, I have one in the HTPC.

 

[MongGrel]

But I have an Antec gold 550 in that thing.

I tend to overbuild, but two on a 450 seems s little much.

 

[VirtualLarry]

I've done one R9 260X (ok, really a 7790, same thing), with an IB i3 CPU, on a 350W NAXN PSU. Two might work on a really stout (underrated) 450). Don't think that I was try it with a CM tho. Maybe a Seasonic Gold or Corsair.

 

[dave_the_nerd]

Some PSUs will supply more than their rated wattage, most won't. Most will just turn themselves off (overcurrent protection) if they're overloaded. But cheap power supplies may damage your hardware.

A 260X will typically pull around 100w, so if you have two of them, a <100w CPU, and a few odds and ends, you're probably okay.

Running Furmark, Prime95, or other "power virus" burn-in utilities isn't something I'd recommend, though.

 

[spat55]

I would just sell the old card, crossfire has to many issues and isn't worth it with low end cards.

 

[dave_the_nerd]

I would just sell the old card, crossfire has to many issues and isn't worth it with low end cards.

Technically, yes. However, I counter; "because it is there."