SilverStone ST85F-GS 850W PSU For R9 290 (overclock)

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Marundanation

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Sep 17, 2013
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Hello,

I am interested in buying the SilverStone ST85F-GS 850W Power Supply for the R9 290 Vapor-X.
The reason why I choose this PSU is because it is only (W/H/L) 150 x 86 x 150mm in size which could just barely fit in my case, any PSU more than 160mm in length would not fit (because I added a Jetflo 120mm fan on the bottom of the case therefore I should have a 10mm headroom with this PSU).

But the question is this powersupply good enough to handle a FX-8350 (~200W) with a will-to-be overclock R9 290 (~500W power consumption when overclocked) and later on I might put it back at stock speed (~400W power consumption) so I can use crossfire (~600W) as said here: http://www.guru3d.com/articles-pages/radeon-r9-290-crossfire-review-benchmarks,4.html

I have 5 CoolerMaster Jetflo 120mm fans so that adds up to 24W (4.8W each)

I tried looking in the tiered power supply list but I couldn't find this or I missed it.
But if anyone feels that this is not a suitable power supply please inform me a better one - but only from Umart store http://www.umart.com.au/umart1/pro/Products_list.phtml?id=10&bid=9&id2=140 (Australian retail)

It must not be no longer than 160mm in length (150 width and 86 height is fine) and less than $200 (Australian dollars) and it must be only from that shop! They are cheap for Australians and there is a Umart store 5-8mins where I live so its more convenient that way. http://www.umart.com.au/umart1/pro/Products_list.phtml?id=10&bid=9&id2=140

Thanks!
 
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My recommendation would to be get a bigger case if you are struggling this hard to find a PSU that will fit then there is no way that the rest of your computer is getting the air circulation that is needed, in the long run this could cause an issue for all components within the case, but if you are going to carry on with the one you got the one you picked out dose have enough power to run it but as I said just be careful as some brands of PSU do not run at the W they say they do some ive tested have run anywhere from 1%-25% below the power that is stated on the box, Ive never tested the one that you posted but be careful as you are cutting it fine
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Hawkshot

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My recommendation would to be get a bigger case if you are struggling this hard to find a PSU that will fit then there is no way that the rest of your computer is getting the air circulation that is needed, in the long run this could cause an issue for all components within the case, but if you are going to carry on with the one you got the one you picked out dose have enough power to run it but as I said just be careful as some brands of PSU do not run at the W they say they do some ive tested have run anywhere from 1%-25% below the power that is stated on the box, Ive never tested the one that you posted but be careful as you are cutting it fine
 
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M

Marundanation

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Sep 17, 2013
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Thanks for the answer. The reason why I need a small PSU is because the fans I installed on the bottom will be blocking PSUs over 160mm. My current PSU is 140mm and I measured with a ruler that the space between the PSU and the fan is ~25mm apart. So if we add 25mm on top of 140mm that would be 165mm but to be sure I will make it 160mm max.

My case has good airflow capabilities, it keeps the motherboard cool at 21C Degrees. I installed 5 fans including 1 on the bottom and I prefer not removing it since I spent so much money on those fans.

 
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Hawkshot

Hawkshot

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Most PSU that come with what they say are 8 pin are Usually 6pins+2, which means that you can use it as a 8 pin connector but its 6 plus another 2 that you can use but it can also be used as a 6 pin, also recommending another PSU becomes very hard because all the ones I would say go for are over the 160mm limit that you have given
 
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M

Marundanation

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Sep 17, 2013
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Ah ok. If that's the case then lets just say I might remove the bottom fans so then the length could be as long as it can. What would you recommend? Remember I may crossfire or not.
 
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Marundanation

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I might consider this. Thanks.
 
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