Which cheap Power supply for 2x AMD RX 480?

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Math Geek
right now we don't know about power needs for the cards. amd says 150w with a 6 pin connection but custom cards are sure to exceed this. give me a few minutes and i'll scan amazon for a decent psu that should be able to handle any 2 480's even if they use more power. that fsp is not very good and not worth buying at all

bottom of the barrel for a unit is this antec 600w https://www.amazon.de/Antec-0-761345-06425-5-VP600P-internal-Kingdom/dp/B00K64HZI0/ref=sr_1_52?s=computers&ie=UTF8&qid=1466698643&sr=1-52&keywords=power+supply 75 euros

this is the cheapest quality unit i see https://www.amazon.de/EVGA-110-B2-0850-V3-SUPERNOVA-BRONZE-MODULAR/dp/B00LM1V0EQ/ref=sr_1_67?s=computers&ie=UTF8&qid=1466698935&sr=1-67&keywords=power+supply...
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Math Geek

Math Geek

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right now we don't know about power needs for the cards. amd says 150w with a 6 pin connection but custom cards are sure to exceed this. give me a few minutes and i'll scan amazon for a decent psu that should be able to handle any 2 480's even if they use more power. that fsp is not very good and not worth buying at all

bottom of the barrel for a unit is this antec 600w https://www.amazon.de/Antec-0-761345-06425-5-VP600P-internal-Kingdom/dp/B00K64HZI0/ref=sr_1_52?s=computers&ie=UTF8&qid=1466698643&sr=1-52&keywords=power+supply 75 euros

this is the cheapest quality unit i see https://www.amazon.de/EVGA-110-B2-0850-V3-SUPERNOVA-BRONZE-MODULAR/dp/B00LM1V0EQ/ref=sr_1_67?s=computers&ie=UTF8&qid=1466698935&sr=1-67&keywords=power+supply 147 euro

you're trying to go high end on low end budget which rarely works out. the antec is the cheapest psu i would trust to my system with 2 480's in it. it'll handle a couple 150w cards .
 
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JackNaylorPE

JackNaylorPE

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EVGA B2 750 - $49 ... should do it unless we see a huge jump in power consumption from the 380
http://pcpartpicker.com/product/JYyFf7/evga-power-supply-110b20750vr

http://www.guru3d.com/articles_pages/asus_radeon_r9_380_strix_review,5.html

This is Guru3D's generic power supply recommendation for the R7 and R9 series:

AMD R9 380 - On your average system the card requires you to have a 500 Watt power supply unit.
AMD R9 380 Crossfire - On your average system the cards require you to have a 700 Watt power supply unit as minimum.

If you are going to overclock GPU or processor, then we do recommend you purchase something with some more stamina.
Click to expand...

Still, I wouldn't buy the PSU or the cards till at least 6-8 weeks after they are in sufficient supply
 
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JackNaylorPE

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PCpartpicker works by just changing the country drop down. Unfortunately, that PSU (SF Golden Green) isn't sold in Germany under that name.... and PC partpicker lists the other PSUs made on that platform but no pricing from among the limited amount of outlets they check.

NZXT Hale90
Rosewill Capstone
Rosewill Lightning

However, SF does sell their own version of that PSU in Germany (Actually the Golden Green HX) for about €100

http://de.pcpartpicker.com/product/zpdqqs/super-flower-power-supply-sf750p14xehx

Considering that a Corsair (CX) CrappyXtreme sells for €85, that's a perty good price.

Another one to look at is the XFX TS which is similar to the Seasonic M12 an goes for about €90
http://de.pcpartpicker.com/product/RYyFf7/xfx-power-supply-p1750gts3x
 
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Math Geek

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i have always hated amazon's site and i'm sure it did not list all the psu's they sell. there is no subsection just for them. partpicker has a few more listed for sure. i stuck to amazon since that's what he posted first.

here are a few more partpicker that would work. again i am assuming 2 x 480's at up to 200w and an 8 pin power connection each.
http://de.pcpartpicker.com/products/compare/super-flower-power-supply-sf650p14xehx,xfx-power-supply-p1650gts3x,xfx-power-supply-p1750gts3x/
 
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JackNaylorPE

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I wouldn't go 650.... not with what we know as yet since there are no reviews and Guru3d stipulating 700 as a minimum w/ NO overclocking for the 380.

Using the 1.5 x rated TDP rule of thumb and your TDP (380 was 196 TDP and pulled 240 watts from the wall) .... two 200 watt TDP cards x 1.5 = 500 watts just for the cards. Unless the 480 proves to be significantly more efficient and overclocking CPU and / or GPU is off the table, I can't get behind those 650s.
 
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Math Geek

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amd has said 100w during gaming load for the 480!! i doubled it to 200w for custom cards. i can't imagine it taking more than that. so while the 500w might be a good estimate for other cards. 400w is a bit high more than likely for a couple 480's. we won't know for sure until we see reviews but i feel pretty safe with 650w for a couple cards that will probably average 150w for custom models.
 
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JackNaylorPE

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AMD says lots of things lotta things ... "Mantle will change everything" , so does nVidia ...as we saw actual load temps way way above the temps in the show demo. I wouldn't want someone to make a buying decision today on what might turn out to be true in a month ... especially when there no real money to be saved.

I am also talking with respect to load %, overclocking and noise. Voltage stability goes south, ripple and noise increases the closer you get to full load. Nice if you can get operate at a level most of the time where the fan doesn't have to kick up into high gear or perhaps not at all.

I think we agree tho that its better to wait till the data is there and make a decision at that time. If the OP needs to buy now, the TS 750 (on both our lists) I think would be the safe choice. If the card drops in mid July, I also wouldn't touch one till at least mid September ... when the improved designs and later steppings arrive.


 
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ema21del9

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You know I totally agree with you, I took a decision a few yeas ago when searching for a new GPU and "Mantle ready" cards were just released, I bought one because it was going to be like 935672% faster than any card (sarcasm) and turned out to be worthless. Plus I had to deal with a lot of issues with AMD drivers (but that's a different story). Conclusion: buy something truly tested.
 
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JackNaylorPE

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We'll know about the reference cards in 6 days ... the cards people actually want will lag behind somewhat. And still, those other factors (noise OCing, etc) versus cost still need to be considered. How much is an extra 0.1 Ghz OC worth ? How much is a few extra dbA worth ? These will vary by user.
 
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C0ff33Cup

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Go for 750W+

2ef4ah1.jpg


 
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