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PSU suitable for O.C ATI HD4890 Crossfire

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December 3, 2009 4:33:43 PM

I have together so far... Intel Core i5 750 2.66 GHz Processor Asus P7P55D LE Motherboard Cosair 4GB DDR3 Ram Western Digital Caviar 1TB hard drive Antec Nine Hundred Gaming Case but im looking for a suitable psu to run the HD4890's in crossfire mode. On the official amd website, it says that a 4x 6-pin connector is needed, but i can find any. Any suggestions would be great.
a b U Graphics card
December 3, 2009 5:11:56 PM

anort3 said:
I would suggest either the Corsair 750TX or 850TX. The 750 is likely enough but the 850 is on sale for the same price at newegg right now.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

+1
You wouldn't have to worry about your PSU until you decide to upgrade to an OctoCore i88 and HeXaFire. ;) 
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a c 140 U Graphics card
December 3, 2009 5:52:49 PM
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1) A 750w is your best bet. Make sure it has (4) 6 pin connectors.
2) Why (2) 4890's? I would spring for a single 5870 and be done with it. Granted (2) 4890's would slightly outperform it, but you will have less headache and DEFINITELY no heat issues. I tried to Crossfire 2 4870's and had HUGE heat issues to the point where I sold them off on eBay and got a 5870. I originally had a single card which was perfect, but a second just heated up the top card and it cooked to 100C and crashed after about 20-30 minutes of gaming.
December 4, 2009 3:37:06 AM

jay2tall said:
1) A 750w is your best bet. Make sure it has (4) 6 pin connectors.
2) Why (2) 4890's? I would spring for a single 5870 and be done with it. Granted (2) 4890's would slightly outperform it, but you will have less headache and DEFINITELY no heat issues. I tried to Crossfire 2 4870's and had HUGE heat issues to the point where I sold them off on eBay and got a 5870. I originally had a single card which was perfect, but a second just heated up the top card and it cooked to 100C and crashed after about 20-30 minutes of gaming.


Ok cheers guys, ive made a few changes and have decided to get a Sapphire HD5870
and a Silverstone Olympia OP EVO 1000W PSU. Thanks for the help :D 
December 4, 2009 3:52:52 AM

Shadow_cloud said:
Ok cheers guys, ive made a few changes and have decided to get a Sapphire HD5870
and a Silverstone Olympia OP EVO 1000W PSU. Thanks for the help :D 

jebius a 1kw psu that's tri/quadfire territory.
a c 243 U Graphics card
December 4, 2009 3:54:07 AM

Thats more power than you need to run 3 HD5870s so you could still save $100 by going with the Corsair 750TX or 850TX. But it is a nice quality unit so if you feel the need to over do it then go for it.

http://www.tomshardware.com/reviews/radeon-hd-5870,2422...
a b U Graphics card
December 4, 2009 3:55:44 AM

A 600W PSU in enough! Leaving a lot of room. The HD4890 CF would consume something around 430W on load. So i think the HX620W of Corsair would do the job!
a c 243 U Graphics card
December 4, 2009 4:00:56 AM

hell_storm2004 said:
A 600W PSU in enough! Leaving a lot of room. The HD4890 CF would consume something around 430W on load. So i think the HX620W of Corsair would do the job!


Once again read before you post dude. OP decided on a HD5870 NOT a 4890........ :whistle: 
a b U Graphics card
December 4, 2009 4:07:11 AM

lol @ a 5870 and 1000w PSU.

i wish i had that kinda money to burn on my rig :( 
December 4, 2009 5:59:48 AM

anort3 said:
Thats more power than you need to run 3 HD5870s so you could still save $100 by going with the Corsair 750TX or 850TX. But it is a nice quality unit so if you feel the need to over do it then go for it.

http://www.tomshardware.com/reviews/radeon-hd-5870,2422...



Yeah i know but i do need to consider future upgrades. I chose that psu to ensure the i would have enough power to crossfire the HD5870 if i really needed to. :) 
December 4, 2009 7:10:11 AM

Shadow_cloud said:
Ok cheers guys, ive made a few changes and have decided to get a Sapphire HD5870
and a Silverstone Olympia OP EVO 1000W PSU. Thanks for the help :D 


geez.. you do have the money to burn..

if i were you, ill get a quality 500/550watt psu to run that 5870.
a c 140 U Graphics card
December 4, 2009 9:45:24 AM

Good decision on the video card change. You will love that card.

Also, you do not need a 1000W PSU. Even to crossfire (2) 5870's. At MOST a 5870 CF setup will consume about 650W at max load (for the full system). To leave a little headroom a 850W would do the job fine. No need for a 1000W beast. It's a waste. You could probably get away with a SOLID 750W but a 850 is a safer bet. But do you REALLY think you will CF? or just sell it and get the next best thing at that time. That is what I always end up doing. I tell myself ill add a 2nd one but never did, up until last time I tried (2) 4870s and had TONS of heat issues. I ended up selling them and getting a 5870. So lets get real here... do you actually have plans to crossfire? If not get a solid 600W and save yourself come bread. Also, Silverstone would not be my brand of choice.
June 18, 2010 3:49:10 AM

Jay2tall i would like to ask you does the cooler master extreme 650w can power up my rig with
power color HD4890 OC. im thinking of upgrading my old 8500gt card with the 4890 do you the PSU
is enough to power up. or should i just go with the cooler master extreme 550w. im low on a budget for PSU here.(but really wanted the hd4890) its been so long playing crysis like a wolfenstein 3d. :pt1cable: 
!