Need advice with 4x 290x and 990fxa-UD5

[Commodore]

Hi everyone! I need your advice,
already got 4x 290x sapphire Tri-x 4gb OC version,
FX8350 cpu,
G-skill 1866 16gb ram,
and MB Gigabyte 990FXA-UD5

I read motherboard manual and they said there that i can connect only 3 PCI-E x16 cards, is this true? Or i can get riser x1-x16 and it will work fine?

Another question what power supply i need to buy, whats your advise?

Thank you!

[ati6990]

i use ud7 990fxa and run 4x6990 or 5x7970 , no problem , i think ud5 will be the same, if you dont use smal water coolers the space is hard to calculate using big aircooling thinks , but i never handle those rizzzerzzz , but must work... test it and write down if something dont work.

[Commodore]

if you dont use smal water coolers the space is hard to calculate using big aircooling thinks ,

what cooling systems do you use?

There is not enough space with stock coolers

[ati6990]

Because space on my E-atx board is not enough for all 4 i have to move on water, so the space of each card is 50% less then with the old aircooling system.
1cm space between each card on air let the heat grow on a danger level.

btw i use a 1500watt enermax , but i think 1200 watt are eneugh for your cards.
i like your cpu , on water it kickass on oc.

if you wanna use risers , you have to rebuild your tower or use a 80 dollar mining case , but its open air

but a mining naked tower would be the best solution for you i think.

[Commodore]

Because space on my E-atx board is not enough for all 4 i have to move on water, so the space of each card is 50% less then with the old aircooling system.
1cm space between each card on air let the heat grow on a danger level.

Can you make a photo of how it's look with water-cooled system or url where you bought your gpu water-cooled system?

PS: I ordered 1250W chieftec PSU

[epixoip]

1250W PSU is nowhere big enough, 4x 290X can easily draw 1200W by themselves.

[Commodore]

1250W PSU is nowhere big enough, 4x 290X can easily draw 1200W by themselves.

My problem now is fit in 3x 290x tri-x , as i wrote before stock air cooling system is bigger(3mm wider then 2U slot) than i can insert without risers in 1-3-5 pci-e slots. I hope 1250w would enough for 3 cards when i modify stock cooling or buy another cooling, don't want to go for risers yet.

[epixoip]

it has been stated repeatedly on these forums that you should avoid buying OEM-design cards.

[ati6990]

This is only 4x6990 but coolersystem is the same you can buy for 290x or others , watercool , 156 dollars each...

http://oi62.tinypic.com/2wc38ew.jpg
ud7 best.....