3X 7950 Build? Will it work?

[SingingThroughTheStorm]

I'm thinking about building a PC and I'm wondering how to go about installing three GPU's. I understand it appears lop-sided, but I have specific uses in mind which spec wise it would be capable of.

My biggest concern is whether the case, motherboard, and PSU will support those three GPU's running together. I would pull out the internal storage rack of the Lian Li so the two 140mm intake fans are pulling in enough air and have the 120MM still working as exhaust. If stress testing reveals numbers too high; then side fans will be installed.

Anyways, everything compatible and able to fit?

 

[AMD Radeon]

NO and why?
you need full tower case, or it is better to have EATX mobo and XL size case to get more airflow. and why do u need 3 way SLI? bitcoin?

 

[elfmaslana]

Im not to sure about the compatibility between the cards and the psu.

 

[SingingThroughTheStorm]

NO and why?
you need full tower case, or it is better to have EATX mobo and XL size case to get more airflow. and why do u need 3 way SLI? bitcoin?

The motherboard would support the GPU and the PSU could handle it though, correct?
I do understand what you are saying about the Motherboard, but this will work (not optimally), right?

Anyways it seemed there were enough expansion slots on the Lian-Li to support the three cards.
Comparing it to a full tower it seems the expansion and actual size is the same.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811353009

Also yes, Bitcoin/Litecoin. I don't intend to do the mining though; someone else's build.

 

[Jack Revenant]

NO and why?
you need full tower case, or it is better to have EATX mobo and XL size case to get more airflow. and why do u need 3 way SLI? bitcoin?

The motherboard would support the GPU and the PSU could handle it though, correct?
I do understand what you are saying about the Motherboard, but this will work (not optimally), right?

Anyways it seemed there were enough expansion slots on the Lian-Li to support the three cards.
Comparing it to a full tower it seems the expansion and actual size is the same.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811353009

Also yes, Bitcoin/Litecoin. I don't intend to do the mining though; someone else's build.

The mobo could support it, the PSU not so much. That's not a massively good quality PSU in the first place, and you'd be maxing it out almost completely. The case isn't a very good choice either. With a three-way CrossFire, you REALLY need good airflow, to a degree that few mid-towers can manage.

 

[SingingThroughTheStorm]

NO and why?
you need full tower case, or it is better to have EATX mobo and XL size case to get more airflow. and why do u need 3 way SLI? bitcoin?

The motherboard would support the GPU and the PSU could handle it though, correct?
I do understand what you are saying about the Motherboard, but this will work (not optimally), right?

Anyways it seemed there were enough expansion slots on the Lian-Li to support the three cards.
Comparing it to a full tower it seems the expansion and actual size is the same.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811353009

Also yes, Bitcoin/Litecoin. I don't intend to do the mining though; someone else's build.

The mobo could support it, the PSU not so much. That's not a massively good quality PSU in the first place, and you'd be maxing it out almost completely. The case isn't a very good choice either. With a three-way CrossFire, you REALLY need good airflow, to a degree that few mid-towers can manage.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139029

Coupon brings the PSU down closer to $110 not counting rebate. Should allow for a little more wiggle room with the GPU's power consumption. The case I'm still not quite seeing a way to improve upon it. What I was thinking was having the two 140MM intakes, one rear 120mm exhause, and two 140MM exhausts on the sidepanel. Those two exhausts would cover the GPU area and exhaust hot air that is put into the case by the GPU.

 

[Jack Revenant]

NO and why?
you need full tower case, or it is better to have EATX mobo and XL size case to get more airflow. and why do u need 3 way SLI? bitcoin?

The motherboard would support the GPU and the PSU could handle it though, correct?
I do understand what you are saying about the Motherboard, but this will work (not optimally), right?

Anyways it seemed there were enough expansion slots on the Lian-Li to support the three cards.
Comparing it to a full tower it seems the expansion and actual size is the same.
http://www.newegg.com/Product/Product.aspx?Item=N82E16811353009

Also yes, Bitcoin/Litecoin. I don't intend to do the mining though; someone else's build.

The mobo could support it, the PSU not so much. That's not a massively good quality PSU in the first place, and you'd be maxing it out almost completely. The case isn't a very good choice either. With a three-way CrossFire, you REALLY need good airflow, to a degree that few mid-towers can manage.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139029

Coupon brings the PSU down closer to $110 not counting rebate. Should allow for a little more wiggle room with the GPU's power consumption. The case I'm still not quite seeing a way to improve upon it. What I was thinking was having the two 140MM intakes, one rear 120mm exhause, and two 140MM exhausts on the sidepanel. Those two exhausts would cover the GPU area and exhaust hot air that is put into the case by the GPU.

That PSU is definitely safer, though my paranoid self would tend to prefer 1000w for a three-way CrossFire. You might consider a different case, really. Mid towers aren't really made with triple-high-end-GPU configurations in mind.

 

[edogawa]

This is a bit more, but a lot better build.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor ($189.99 @ Microcenter)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($24.99 @ Newegg)
Motherboard: ASRock Z77 Extreme9 ATX LGA1155 Motherboard ($289.99 @ SuperBiiz)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory ($65.79 @ NCIX US)
Storage: Western Digital Caviar Black 500GB 3.5" 7200RPM Internal Hard Drive ($74.99 @ Newegg)
Video Card: Gigabyte Radeon HD 7950 3GB Video Card (3-Way CrossFire) ($309.99 @ Newegg)
Video Card: Gigabyte Radeon HD 7950 3GB Video Card (3-Way CrossFire) ($309.99 @ Newegg)
Video Card: Gigabyte Radeon HD 7950 3GB Video Card (3-Way CrossFire) ($309.99 @ Newegg)
Case: Cooler Master HAF X ATX Full Tower Case ($179.99 @ Newegg)
Power Supply: Corsair 860W 80 PLUS Platinum Certified ATX12V / EPS12V Power Supply ($199.99 @ Amazon)
Optical Drive: Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer ($19.96 @ Outlet PC)
Operating System: Microsoft Windows 8 (OEM) (64-bit) ($93.98 @ Outlet PC)
Total: $2069.64
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2013-05-04 03:48 EDT-0400)

(edit: selected wrong board)

Power requirements:

 

[giltyler]

You should try to keep the power supply at around 50% output for Efficiency and longevity.
and with a nice multi gpu rig a full modular for cable management.