\[advice\] Powered Raisers \* All about GPU raisers FAQ

Can someone quickly explain the use for powered raisers?

Why are there powered and unpowered? Can you slot a 1x raiser in a 16x slot?

I ask as I am using non powered raisers on a rig with four cards, When I put one on, I get a good speed, When the second one goes on, The first drops a few KHs and both sit a little under rated, And so keeps dropping for the four cards, Sometimes the the last card reports 4KHs and system hangs, It never crashes whilst running?

HopeStillFlies

Don’t run more than a couple of cards off a board without powered risers. Nutnut has a great write up on this:

[url=http://forum.feathercoin.com/index.php/topic,2193.msg17347.html#msg17347]http://forum.feathercoin.com/index.php/topic,2193.msg17347.html#msg17347[/url]

As to your other question, you can use a 1x in a 16x. I’ve used 1x cap cards in 16x slots before. It will work.

Thanks for the link, I read the lot, Tho the guys cant seam to make up their mind as to the correct diagnosis, Tho it looks like I have escaped a disaster.

I don’t have a clue as I am not to technical with power.

I find it weird that a mobo designed with 4-5 PCI-e slots would not have the power support to use all of them? Surely if I was to line them all up directly on the mobo I would not have this problem?

HopeStillFlies

[quote name=“squall1066” post=“32579” timestamp=“1382900178”]

I find it weird that a mobo designed with 4-5 PCI-e slots would not have the power support to use all of them? Surely if I was to line them all up directly on the mobo I would not have this problem?
[/quote]

The thing is that, no, motherboards aren’t engineered with the thought of having multiple video cards attached to them. Even having two Crossfired/SLI’d together is a fairly recent consumer demand. PCI-e slots can be used for all sorts of things (cap cards, wireless cards for external antennas, MIDI devices, breakout boxes, etc.)

Lining them all up on the motherboard directly poses two new problems: weight (on the board itself if parallel to the floor, stress on the PCI-e connectors if stood vertically) and heat dissipation (since the cards are going to be right up on each other creating pockets of heat that have nowhere to go, possibly damaging the cards).

Really, you just have to bite the bullet and either make them or buy them in order to do this right.