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Old 08-02-2009, 01:40 PM   #1
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Default Crossfiring with this psu

Hey guys been a while since I made a topic lol
anyway
I currently have this psu: http://www.newegg.com/Product/Produc...82E16817182032

and I want to get another 4850 and crossfire them soon.

I was reading about crossfiring and how the psu needs enough voltage coming from the rails to supply power to both cards.
however, I couldn't figure out if my psu would be able to power both of them

Anyone help me out here?
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Old 08-02-2009, 01:42 PM   #2
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Default Re: Crossfiring with this psu

I would suggest a little more 12v amperage. It's 19A per 12v rail and it features 2 rails. Let me see if I can dig up some specs on the 4850.

EDIT: Based on the specs for a single 4850, I would suggest ~650watt PSU with about 50A between the 12v rails. Yours only has 38A and 600W which would be acceptable, but in the case of a flux, you might corrupt a data process and BSOD. Corsair makes a really nice 650 watt.

Corsair 650Tx.
Has 650 watts and 52A on a single 12v rail.
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Old 08-02-2009, 02:00 PM   #3
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Default Re: Crossfiring with this psu

Crap
I didn't really wanna buy another psu too lol
for the price of the card and psu, I could just buy a 260 or something like that

Thanks for the help though
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Old 08-02-2009, 02:40 PM   #4
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Default Re: Crossfiring with this psu

The Rosewill 600W should do the job. ATI recommends at least a 550W PSU for two HD 4850's running in Crossfire.

ATI Radeon™ HD 4850 Graphics System Requirements
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Old 08-02-2009, 02:45 PM   #5
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Default Re: Crossfiring with this psu

Hmm that gives me hopes

But would 2 4850s outperform a gtx260 core216?
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Old 08-02-2009, 03:11 PM   #6
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Default Re: Crossfiring with this psu

Nope, not necessarily: Sapphire HD 4850 CrossFire Review: Worthy Rival to Nvidia GeForce GTX 280?

You can get an overclocked GTX 260 that runs on par with a GTX 280: MSI N260GTX-T2D896-OCv4 GeForce GTX 260 896MB
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Old 08-02-2009, 03:19 PM   #7
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Default Re: Crossfiring with this psu

just get 2 4850x2's lol....

that would so sweet to have...
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Old 08-02-2009, 11:08 PM   #8
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Default Re: Crossfiring with this psu

It wouldn't be 2 x2's
It would be just 2 plain 512
Its just that I would rather crossfire than buy another complete card.
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