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Title: Running 4 290 on one PSU 1250 Watt Post by: Zombie123 on January 18, 2014, 03:50:17 PM So,
I am running 4 XFX 290 with a single PSU 1250 Watt Seasonic GOLD I am running all 4 at 20 Intensity 24Hrs a Day. All cards at 75C Card 1 -- 890 Avg Rest of tha cards 877 Avg IS there any danger of Melting the RIG :) and I guess I am under powered as well using just 1 1250Watt PSU No undervolting 3 cards locked didnt check the card 1 yet Title: Re: Running 4 290 on one PSU 1250 Watt Post by: Gazza1 on January 18, 2014, 03:53:41 PM I wonder if VBE7 would work on your cards for undervolting
Title: Re: Running 4 290 on one PSU 1250 Watt Post by: crazyates on January 18, 2014, 06:40:52 PM I have a 5x 290 rig, and that pulls ~1750W at the wall with 2 80Plus GOLD PSUs. Your 1250 is not cutting it. You need to buy a small secondary PSU, and move at least one of them off to it.
And no, last I checked VBE7, doesn't work on 290 cards. It only works on the 280x, and any Tahiti cards. The 290 and 290x are Hawaii chips. Title: Re: Running 4 290 on one PSU 1250 Watt Post by: daddyfatsax on January 18, 2014, 07:20:08 PM So, I am running 4 XFX 290 with a single PSU 1250 Watt Seasonic GOLD I am running all 4 at 20 Intensity 24Hrs a Day. All cards at 75C Card 1 -- 890 Avg Rest of tha cards 877 Avg IS there any danger of Melting the RIG :) and I guess I am under powered as well using just 1 1250Watt PSU No undervolting 3 cards locked didnt check the card 1 yet I ran 4 7970's off a Corsair 1250W PSU for 6 months. Got around 730k per card. I think the new R290's do pull more power, so I would have to agree you will need another smaller PSU. Title: Re: Running 4 290 on one PSU 1250 Watt Post by: Zombie123 on January 18, 2014, 11:48:56 PM Hmm Ok will think about adding one more card and another PSU... dont want to melt anything..though it seems to be stable for couple of days now
Title: Re: Running 4 290 on one PSU 1250 Watt Post by: Gazza1 on January 18, 2014, 11:51:22 PM hook a kilowatt up to the wall. i bet you are running near max if not over
Title: Re: Running 4 290 on one PSU 1250 Watt Post by: Zombie123 on January 19, 2014, 03:28:12 AM I am running over at around 1300 but i read overclock forum that it wont kill PSU. PSU can handle it
Title: Re: Running 4 290 on one PSU 1250 Watt Post by: Equate on January 19, 2014, 05:09:33 AM I am running over at around 1300 but i read overclock forum that it wont kill PSU. PSU can handle it just wait and watch, when it kill the psu.Then you will regret. Title: Re: Running 4 290 on one PSU 1250 Watt Post by: samsonn25 on January 19, 2014, 04:28:57 PM I had stock 290s pulling 260-270 watts on 95-99% load.
Seasonic 1250 can go hold at least 1500 watts. Adding a secondary PSU wouldnt hurt to spread out one of the cards, no additional motherboard and cpu draw if using a dummY plug for the 24pin atx. Title: Re: Running 4 290 on one PSU 1250 Watt Post by: Zombie123 on January 20, 2014, 01:37:10 AM I had stock 290s pulling 260-270 watts on 95-99% load. Seasonic 1250 can go hold at least 1500 watts. Adding a secondary PSU wouldnt hurt to spread out one of the cards, no additional motherboard and cpu draw if using a dummY plug for the 24pin atx. Thanks Guys I will get another sea sonic and 2 more cards and hash away !!! Waiting for risers.. which I ordered from China lol Risers in US are around 25$ now which is ridiculous! Title: Re: Running 4 290 on one PSU 1250 Watt Post by: maxman190 on January 20, 2014, 02:33:13 AM Dude, I seriously recommend that you stop doing that right now and wait till you get another PSU.
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