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2x 4870's with what power supply?

1068 Views 16 Replies 7 Participants Last post by  Dpak, 
Dpak
Right, the plan is I want to have 2 ati radeon hd 4870's but I noticed that each of these cards need two 6 pin pci-express connectors. That means I'm going to need four 6 pin connectors with the PSU.

I wanna get a 750 watt PSU.

I live in the UK so I'd prefer finding a website that is based on delivering in the UK.

I also wanna know how much cooling i'm going to need, I wanna get the Palit 1gb 4870 though they're quite rare.

So any help on what kind of PSU I could use, your advice on what 4870 I should buy and anything else on the matter.

Thanks in advance
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M
dont buy 4870s now. its previous model. get 5850 or 5870. i dont recommend going crossfire. stick with single gpu cards - if the most powerfull isnt enough then go for crossfire.

to answer your question - i use Antec Quattro 850 for my 4870x2 card but u can find cheaper alternatives. to shop online go to google - shopping - type in desired model - sort by price, only select rated shops with stars.
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Phaedrus2129
Agreed, it probably isn't wise to invest that much money in Radeon 4800 series cards when the Radeon 5700 and 5800 cards are out. If you did use two 4870s, I would recommend something like the Corsair TX650W at minimum, the 750 or 850W models would be better. Note, quality is more important than overall wattage.
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E
Right when they first launched, I had no issues running 2 4870's off a corsair hx620, hell that was even with a decently clocked q9450.
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Dpak
Wow, thanks for the help, that google search is really helpful.

I understand that the 4870's are old, I mean nearly everyone says I should buy the newer models. The thing is, these old models are safe imo, I can see what problems people come across and then judge if I want to buy the model or not, but if I were to buy a new product, I'd be experiencing these problems and then find out the whole products just wasted my money.

I would also be saving money spending on two 4870's costing around £200-£250 than buying the one 5870 for £300.

I would really appreciate your argument against my points, I mean I'm even having trouble deciding between Nvidia and ATI.
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Dpak
bump
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meticadpa
Quote:


Originally Posted by Dpak
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bump

Please refrain from bumping your thread until after 24 hours, it's against the Terms of Service.

That aside, the minimum power supply I'd recommend is this. It has enough power connectors, and more than enough power for your system. It's based on a new(er) SeaSonic design, similar to the M12D, and is very efficient and stable. It's better than pretty much everything in the TX range from Corsair, except the TX950, where it is about equal with.

Here is the link to its big brother - the 750W version.
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Dpak
Doesn't that first 650 watt PSU you mentioned only have one 6 pin connector?

The big brother you mentioned also only has two 6 pin connectors.

Don't I need four 6 pin connectors for two 4870's.

Sorry about the bump anyways, I didn't know.
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EnToxication
Quote:


Originally Posted by meticadpa
View Post

Please refrain from bumping your thread until after 24 hours, it's against the Terms of Service.

That aside, the minimum power supply I'd recommend is this. It has enough power connectors, and more than enough power for your system. It's based on a new(er) SeaSonic design, similar to the M12D, and is very efficient and stable. It's better than pretty much everything in the TX range from Corsair, except the TX950, where it is about equal with.

Here is the link to its big brother - the 750W version.
well recommended.
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EnToxication
Quote:

Originally Posted by Dpak View Post
Wow, thanks for the help, that google search is really helpful.

I understand that the 4870's are old, I mean nearly everyone says I should buy the newer models. The thing is, these old models are safe imo, I can see what problems people come across and then judge if I want to buy the model or not, but if I were to buy a new product, I'd be experiencing these problems and then find out the whole products just wasted my money.

I would also be saving money spending on two 4870's costing around £200-£250 than buying the one 5870 for £300.

I would really appreciate your argument against my points, I mean I'm even having trouble deciding between Nvidia and ATI.
Yes that is true, if you want a stable system right now, go to 4000 series. They will hold up for few more years. 5000 series are pain in the butt right now.
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meticadpa
Quote:

Originally Posted by Dpak View Post
Doesn't that first 650 watt PSU you mentioned only have one 6 pin connector?

The big brother you mentioned also only has two 6 pin connectors.

Don't I need four 6 pin connectors for two 4870's.

Sorry about the bump anyways, I didn't know.
Uh, no.

They both have 4 PCI-E connectors. (2x 6 Pin, 2x 6+2 Pin).

Here is a JonnyGuru review on the 750W model. He does pretty much the best power supply reviews anywhere, if you're not familiar with him.

Quote:
2 x 6 pin and 2 x 8 (6+2) pin PCI-E graphics card connectors for TP-650, TP-750 and TP-750 Blue
Taken from Antec's website, here.
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Dpak
Quote:

Originally Posted by Dpak View Post
Doesn't that first 650 watt PSU you mentioned only have one 6 pin connector?

The big brother you mentioned also only has two 6 pin connectors.

Don't I need four 6 pin connectors for two 4870's.

Sorry about the bump anyways, I didn't know.
Nvm, if I'm right, they're connectors that would then equal the four 6 pin connectors that I need?
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Dpak
Ahh lol, both posted at same time. alright then thanks, and I'll check that review out.
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meticadpa
The confusion you may have had is because the power supply has some modular cables, meaning that you can detach them from the power supply's body if the cable in question is not being used, it helps for cable management and things.
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Dpak
Oh wow o_O I didn't know you could detach them. Isn't that risky? and is it even easy to do?
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Dopamin3
Quote:


Originally Posted by Dpak
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Oh wow o_O I didn't know you could detach them. Isn't that risky? and is it even easy to do?

All modular power supplies are like that.

Oh, and you should go crossfire 5770s. They perform similar but will draw less power because they're 40nm, overclock higher, and support dx11.
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Dpak
Quote:


Originally Posted by Dopamin3
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All modular power supplies are like that.

Oh, and you should go crossfire 5770s. They perform similar but will draw less power because they're 40nm, overclock higher, and support dx11.

Ahh they're really cheap O.O

I may just as well go for it. Just gonna do some research and see if anyone has been having problems with them.

Thanks
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