Author

Topic: Running 4 290 on one PSU 1250 Watt (Read 2871 times)

full member
Activity: 350
Merit: 100
January 19, 2014, 10:33:13 PM
#11
Dude, I seriously recommend that you stop doing that right now and wait till you get another PSU.
legendary
Activity: 868
Merit: 1000
January 19, 2014, 09:37:10 PM
#10
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!
hero member
Activity: 882
Merit: 1003
January 19, 2014, 12:28:57 PM
#9
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.
hero member
Activity: 770
Merit: 500
January 19, 2014, 01:09:33 AM
#8
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.
legendary
Activity: 868
Merit: 1000
January 18, 2014, 11:28:12 PM
#7
I am running over at around 1300 but i read overclock forum that  it wont kill PSU. PSU can handle it
full member
Activity: 238
Merit: 100
January 18, 2014, 07:51:22 PM
#6
hook a kilowatt up to the wall. i bet you are running near max if not over
legendary
Activity: 868
Merit: 1000
January 18, 2014, 07:48:56 PM
#5
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
hero member
Activity: 857
Merit: 1000
Anger is a gift.
January 18, 2014, 03:20:08 PM
#4
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 Smiley 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.
legendary
Activity: 952
Merit: 1000
January 18, 2014, 02:40:52 PM
#3
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.
full member
Activity: 238
Merit: 100
January 18, 2014, 11:53:41 AM
#2
I wonder if VBE7 would work on your cards for undervolting
legendary
Activity: 868
Merit: 1000
January 18, 2014, 11:50:17 AM
#1
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 Smiley 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

 
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