What PSU do i need?

[Melvis]

Ok Guys, im thinking about playing around with a second 4870X2 and i was wondering what PSU would i need to power both of these cards? I was thinking the Corsair HX-850 PSU would be plenty to run both cards in my system, no OC will be done.

 

[mlee49]

Guru3D did a Quadfire review that showed 740W draw at full load. That was a different CPU and hdd configuration than you:

http://www.guru3d.com/article/radeon-hd-4870-x2-review-crossfire/6

850 should be fine, even at full load you may peak at that which the Corsair can sustain just fine.

 

[codyjansen]

should be great

 

[gpost3]

600 Watts or higher from Enermax, FSP, Seasonic or any 80 Plus certified brand.

Edit: Go with 800 watts or higher as others suggested.

 

[95Viper]

600 Watts or higher from Enermax, FSP, Seasonic or any 80 Plus certified brand.

IMO, I don't think I would be trying to run two 4870X2s on a 600 Watt supply.

My Powercolor 4870x2 would draw 27.5 amps on the 12v at 100% GPU use on stock clocks and that works out to be 330 Watts.
So, 2 of them suckers would, at least, be near double that.

And, the power consumption here for this Sapphire 4870X2 sorta confirms my suspicions. And, if you notice the peak results, it is even greater.

Spoiler

850 should be fine, even at full load you may peak at that which the Corsair can sustain just fine.

So, I would have to go with mlee49's answer on this one.

 

[gpost3]

Just a FYI for OP. Your Corsair is made by Seasonic. So if you can pickup Seasonic brand itself and are able to save some money, then go with that.

 

[Melvis]

Thanks everyone, i went with the HX-850 from Corsair for a total cost of $244 including shipping. Now i just gotta find another 4870X2 to go with mine and see what happens

 

[NdMk2o1o]

Wow thats £40 more than what we woud pay in rip off britain

 

[Melvis]

Wow thats £40 more than what we woud pay in rip off britain

lol yea and thats the cheapest i could find it for from a good well known shop. Whole sale was going to even cost me more :S.

rip off Britain is nothing compared to Up the ass rip off Australia We pay more for many things then any other country in the world, its total BS.

 

[gpost3]

But do you pay taxes in Australia?

 

[Eric_On_Web]

lol yea and thats the cheapest i could find it for from a good well known shop. Whole sale was going to even cost me more :S.

rip off Britain is nothing compared to Up the ass rip off Australia We pay more for many things then any other country in the world, its total BS.

Man you are also near China. Order it from e-bay!

 

[Melvis]

But do you pay taxes in Australia?

Are you kidding me? we pay taxes on our taxes on our taxes Thats true to<

Man you are also near China. Order it from e-bay!

You mean the PSU or Card?

 

[Eric_On_Web]

Mostly all computer parts are made in China...order right away from ebay and order from china for all you can. You gonna skip those dealers who boost the prices.

 

[NdMk2o1o]

Are you kidding me? we pay taxes on our taxes on our taxes Thats true to<

Same here, we pay 20% on everything we earn (earn more than 35K and pay 40%) then we pay 17.5% on everything we buy, we also pay 1k a year council tax, road tax, savings tax, inheritence tax etc etc not to mention duty on fuel/alcohol and cigarettes. Actually most of the £1.37 per litre of fuel is duty I think about 65-70% is duty. Oh we also pay national insurance which is also compulsory and comes straight out of our wage as well as income tax before we can even see it, so the average UK worker pays 30% out of their wages every month and then more and more tax on everything they buy

 

[Eric_On_Web]

From Australia but i dont know if its in your budget
http://cgi.ebay.com.au/Brand-New-800W-Cooler-Power-GX800-Power-Supply-/270672812605?pt=AU_Components&hash=item3f055b5a3d

 

[Frick]

I love taxes, I would hate to have to pay for my medical care, schools (we don't pay anything for collage/universitys) and .. whatnot.

 

[Melvis]

Same here, we pay 20% on everything we earn (earn more than 35K and pay 40%) then we pay 17.5% on everything we buy, we also pay 1k a year council tax, road tax, savings tax, inheritence tax etc etc not to mention duty on fuel/alcohol and cigarettes. Actually most of the £1.37 per litre of fuel is duty I think about 65-70% is duty. Oh we also pay national insurance which is also compulsory and comes straight out of our wage as well as income tax before we can even see it, so the average UK worker pays 30% out of their wages every month and then more and more tax on everything they buy

Yea sounds like us. I dont know all of the figures, i know we pay 52% tax on fuel, 33% for people that earn 30grand a yr and it goes up and up the more you earn. We get taxed on the money we earn, that goes into Super then Taxed when it comes out when you retire, so thats 3 times the same money is taxed before you can have it when you retire. I pay land tax of 1200 a yr and thats considered cheap. States taxes of 10% called the GST. Yea we pay tax on everything, i cant think of anything we dont

 

[wabbitslayer]

Man you are also near China. Order it from e-bay!

ordering something off of e-bay from China???

 

[Eric_On_Web]

ordering something off of e-bay from China???

That's what I always do for thermal paste, cpu coolers, and many other computer parts and I get the same parts you get for my people for sometimes 10X less the price shipping included

If you are lucky enough you find a supplier that can get you the same videocards as in america brand new without the sticker of the company that boost up the prices. Just need to seek deep and know how international business is rolling Trust me on that one