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Title: Would unpowered risers damage the x16 slots of a mobo? Post by: Kinetic915 on May 22, 2013, 06:00:31 AM Running a 7950 or 7970 would unpowered risers damage the x16 slots of a mobo?
Thanks! Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: Miracek on May 22, 2013, 06:17:24 AM I guess that would depend on how many you are looking to run, for example I run 2 unpowered risers for the 2 cards in each of my rigs, Those have only 2 pci-e 16x slots, so working at designed. now if I decided to fill the 2 1x slots with cards as well then i would probably start drawing more current through the mother board then it was designed for, that would damage the board. If I decide to add more cards for the 1x slots i will definitely be using powered riser cables.
Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: DobZombie on May 22, 2013, 03:29:30 PM I've been running only unpowered risers for nearly a year.
3 rigs Each rig has, with four 5970s Three x1 slots One x16 slots. No problems yet! Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: Kinetic915 on May 22, 2013, 04:00:53 PM I've been running only unpowered risers for nearly a year. 3 rigs Each rig has, with four 5970s Three x1 slots One x16 slots. No problems yet! Wow gotcha what mobo? All unpowered x1? Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: GenTarkin on May 22, 2013, 11:02:47 PM thats gotta be one hell of a decent board =P
I blew a motherboard using an unpowered extension cable for a 5970....just one x1 slot ... it went poof a few days later(the board) Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: Kinetic915 on May 22, 2013, 11:04:58 PM thats gotta be one hell of a decent board =P I blew a motherboard using an unpowered extension cable for a 5970....just one x1 slot ... it went poof a few days later(the board) a powered x1 should be fine thought rtight? Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: Kinetic915 on May 22, 2013, 11:21:21 PM would 2 7950s and 1 7790 directly connected to the x16 slots on my mobo and x1 powered 1 7950 not destroy my computer.
Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: Kinetic915 on May 24, 2013, 12:47:22 AM Bump
Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: grue on May 24, 2013, 01:55:58 AM x16? no, because that's considered normal use of the pci-e slot. powered risers are only useful for x1 -> x16 risers.
Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: Kinetic915 on May 24, 2013, 02:22:56 AM As my x1 powered riser i bought from cablesaurus does not work.... I am hesitant to put a gpu in slot 3 as I am rma the previous motherboard. Think it would be okay? 2 7950s in slot 1 and slot 2, one 7790 in slot 3
Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: grue on May 24, 2013, 03:13:01 AM how many lanes are slots 1, 2, and 3?
I run a 5850 (150W max draw) using unpowered 1x -> 16x risers without issue. as long as your motheboard is somewhat decent and your card doesn't draw too much power (over 200W), it will work fine. Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: Kinetic915 on May 24, 2013, 03:24:19 AM how many lanes are slots 1, 2, and 3? I run a 5850 (150W max draw) using unpowered 1x -> 16x risers without issue. as long as your motheboard is somewhat decent and your card doesn't draw too much power (over 200W), it will work fine. its a z77 extreme 6 so its a pretty decent board. the first two are x8 / x8 when a second card is in the second lane with the last being x4. the first 2 would be 7950s so over 200W probably :/ the last a 7790 so under 65w probably Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: Kinetic915 on May 24, 2013, 03:31:13 AM also would putting different clocks on every card be a bad idea?
Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: grue on May 24, 2013, 05:07:42 PM its a z77 extreme 6 so its a pretty decent board. the first two are x8 / x8 when a second card is in the second lane with the last being x4. the first 2 would be 7950s so over 200W probably :/ the last a 7790 so under 65w probably if the size of the slot is x16, it's designed to have a graphics card plugged into it. you should be fine.also would putting different clocks on every card be a bad idea? no, not at all. cgminer can manage clocks differently so you can squeeze the max out of all your cards.Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: chungenhung on May 24, 2013, 09:51:02 PM riser don't damage your mobo, it is the GPU that pulls too much power that will damage the mobo.
Title: Re: Would unpowered risers damage the x16 slots of a mobo? Post by: ssateneth on May 25, 2013, 05:34:20 AM I've been running only unpowered risers for nearly a year. 3 rigs Each rig has, with four 5970s Three x1 slots One x16 slots. No problems yet! Same here. I have one rig with 4 5970 using 1x risers, unpowered, works fine. Also 4 rigs with 4 5870 and 2 5970, also unpowered risers works fine, as well as 2 rigs with 6 7970 with unpowered 1x risers, that too also works fine. 5 MSI Z77A-G45 and 2 MSI 890FXA-GD70 |