Please help me upgrading

George002000 · Dec 3, 2014

Help me upgrading please.

Hello I've gotten dual R9 290 Tri-X GPU's in my PC as I said up ^ and I've made a post in the past asking why when I turn CrossfireX on for Call of Duty there isn't any FPS difference and they told me my PSU isn't high enough as it's a 850W so can someone please tell me a good PSU for this PC. Thanks.

i7 4790k. (CPU)
ASRock Fatal1TY. (Motherboard)
Dual Sapphire R9 290 Tri-X. (GPU)

And I think that's all I need to tell you for the parts, thanks so much for reading and helping.

junkeymonkey · Dec 3, 2014

games may need to be optimized for x-fire or sli to see any benefit from it

junkeymonkey · Dec 3, 2014

Note: Players using AMD cards are encouraged to disable CrossFire, as enabled CrossFire may reduce performance or make the game unplayable. AMD is working to release drivers to fix this issue, but there is no ETA at the moment.

http://support.activision.com/articles/en_US/FAQ/Call-of-Duty-Advanced-Warfare-Minimum-System-Requirements

George002000 · Dec 3, 2014

junkeymonkey :

So is my PSU fine to support my two R9 290's?

junkeymonkey · Dec 3, 2014

I guess whats its brand and model ?? lots of folks ask this but I don't see anywhere its stated on really what is needed its like even the manufactures don't know -- I would think if the 850w puts out 70amps and the 2 cards use up 62 amps ???

George002000 · Dec 3, 2014

junkeymonkey :

It's an PRO850W XFX Black editon.

junkeymonkey · Dec 3, 2014

seemed like they were a nice solid unit I know you looked at forums on this and see they all got a wide different opinion on that psu thing like one says oh you need a 1000w then the next says a 750w is fine and so on its crazy and these no real solid answer on it , but I feel the 850w is fine and I would not go lower than it for myself ?????

synphul · Dec 3, 2014

I'm not sure if you're overclocking these cards or not and each brand may handle a little differently. However there have been people posting their results on power consumption on air cooling vs water cooling (water cooling helps some). Under certain overclocking circumstances, their crossfired r9 290 x3's are pulling over 900w. So it may be possible even if just to have some headroom, that you may need a larger psu in the 1050-1200w range.

Something like this evga supernova g2 - $200 but has a $30 rebate on newegg right now. $170 isn't a bad price for a top tier 1200w psu. http://www.newegg.com/Product/Product.aspx?Item=N82E16817438011

Also as junkeymonkey said, some games don't really benefit from dual graphics cards. Much of the benefit/horsepower of running crossfire or sli is the additional gpu and video ram grunt for keeping high frame rates on higher visual settings across multiple monitors.

junkeymonkey · Dec 3, 2014

thing is like I said every place you look for the power info it swings so wide you don't know what to believe.. I would think non overclocking 850w is bottom line 1000w safe with the 850w at its 70a rating its close to its limit and no overhead to play with

at full load each card is rated at 31a so that's 62 then say you got a 85w cpu that's another 7a at full load so your now at that 70a of the 850w [opinion]

just like you go to a manufacture site for the cards sapphire says 750w min psu power color may say 600w msi may call for a something else for theres .. so who do you believe as fact ??

George002000 · Dec 3, 2014

synphul :

I'm not sure if you're overclocking these cards or not and each brand may handle a little differently. However there have been people posting their results on power consumption on air cooling vs water cooling (water cooling helps some). Under certain overclocking circumstances, their crossfired r9 290 x3's are pulling over 900w. So it may be possible even if just to have some headroom, that you may need a larger psu in the 1050-1200w range.

Something like this evga supernova g2 - $200 but has a $30 rebate on newegg right now. $170 isn't a bad price for a top tier 1200w psu. http://www.newegg.com/Product/Product.aspx?Item=N82E16817438011

Also as junkeymonkey said, some games don't really benefit from dual graphics cards. Much of the benefit/horsepower of running crossfire or sli is the additional gpu and video ram grunt for keeping high frame rates on higher visual settings across multiple monitors.

I'd love to Overclock these two cards but then they'd get even hotter then they are. How much hotter will they get if I overclock them both?

junkeymonkey · Dec 3, 2014

I don't know as you said the heat may cost you in the end ???? don't forget the one card is kinda blocked from air flow by the 2ed card .. that cant help much on that

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