7970 unpowered risers

[ebmx66]

Is it safe to use unpowered x16 risers on 7970s? I have two sitting here unused because they won't fit on my board without risers and the only thing I have right now are unpowered.

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[boozer]

I have several rigs with 3 7970's on the m/b and one on an unpowered riser and it works fine.  I have 1 rig with 2 7970's on the board and 2 on unpowered risers, but whenever I connect the fourth card I have to down clock one of the other cards on the board for some reason... I didnt think about it till now, but maybe its because of the riser, but I dont know what the symptoms would be...

I read somewhere on here that you can 3 or 4 unpowered risers but need power for the rest.

[Trommie]

I have several rigs with 3 7970's on the m/b and one on an unpowered riser and it works fine. 

Do you use a x16 riser? I've been wondering about using some smaller (x1 or x4)unpowered ones.

[moneychasingreturns]

Is it safe to use unpowered x16 risers on 7970s? I have two sitting here unused because they won't fit on my board without risers and the only thing I have right now are unpowered.

Buy some Bitcoins now at the price that you would get for your cards on eBay. Post them for sale to cover the Bitcoins and your already ahead.

[Trommie]

Buy some Bitcoins now at the price that you would get for your cards on eBay. Post them for sale to cover the Bitcoins and your already ahead.

But then you won't have the fun of having a crazy piece of kit in your room whirrign away kicking out loads of heat, part of the rig building/using is about the fun of it forsome of us not just the profit.

Have to admit I love tweaking things in the set-upto optimise it for both power and hashing.

[boozer]

I have several rigs with 3 7970's on the m/b and one on an unpowered riser and it works fine. 

Do you use a x16 riser? I've been wondering about using some smaller (x1 or x4)unpowered ones.

Yea, I have x16 risers but from what I have read they are not required and x1 should work fine.  I hope so cause I just ordered a bunch of them from china, lol.

[vipah]

Too many unpowered may not be a good idea.

[boozer]

Too many unpowered may not be a good idea.

Yea I read on here 3 or 4 at the most on a board and the rest powered.  There is a powered Riser DIY on here that I am going to do and make my own powered risers.

[cheapinkc]

Any thoughts on 1x or 4x risers?  I just orderd 3 16x risers for a box I'm building.