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Author Topic: [HELP!1LTCbounty] Stuck with my computer parts >:(  (Read 630 times)
slavo (OP)
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January 11, 2014, 01:45:24 PM
Last edit: January 11, 2014, 01:58:14 PM by slavo
 #1

Hi everyone.

I'm running several rigs without problem using old parts (7950 and am3+ cheap mobo) without pb since 1.5 year.

I just ordered 6 new rig with boxes; as I plan to sold them later as computer.

I have :

mobo : ga-z77x-d3h
Core : i7-3770
Ram : 16Go
Sapphire 280x : X3
PSU : 1000w gold+


My problem is that only two cards are recognized by every OS i've tried, when the 3 are plugged in.

I tried with a powered X1 riser and the last card was showing up (in bamt), but not hashing, when temp was showing 511° (card was cold).

I have 6 mobo and 18 cards waiting in there boxes, and I really want to avoir riser cables.

Can it be one bad mobo ? I don't want to unpack if I have to change them; so only one is usually open (the one i'm testing obv)

If it's a mobo problem, which mobo can I take in exchange; if I want everything to work on the mobo pci-e slots.

When u read this I'm going to try underclocking every card to check if it's a PSU pb, but with three cards it shouldn't be a problem before mining starts.

I'm giving a 1ltc tip for the best answer (if it solves my problem.)

I'm so stressed as this investment is not only mine; so THANKS IN ADVANCE GUYS.
kalus
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January 11, 2014, 02:05:47 PM
 #2

i am using an asus m5 a99x with three 280x (am3 motherboard).  i was unable to cool it in the case so i ended up putting in open rig with risers.  

i also tried a gigabyte z87x oc.  it has lots of extra power for the motherboard and can support 4 pci-ex16. but the heat will drive you to watercooling.

what sort of case are you thinking of?

DC2ngEGbd1ZUKyj8aSzrP1W5TXs5WmPuiR wow need noms
slavo (OP)
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January 11, 2014, 02:18:29 PM
 #3

I have an aerocool strike x air
kalus
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January 11, 2014, 09:08:11 PM
 #4

open air wouldn't be an issue with enough fans surrounding it.  however, if you are building six systems, risers + cheaper case might be better overall.  at some point you do want to sell these in their cases, but for now, a rack or milk crate for a case might be easier to get to break-even point.

DC2ngEGbd1ZUKyj8aSzrP1W5TXs5WmPuiR wow need noms
kab
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January 11, 2014, 11:41:33 PM
 #5

I am currently using a Z77x-d3h with three cards and it is working well so I don't think that the mobo's as a general need changed, it may be worth giving a different one a try incase that specific one is an issue although it seems unlikely as the other cards are working.

Have you tried swapping the GPU's around to make sure it isn't one of them in particular causing the problem?

My only tip is that having three cards on the board is going to be snug and will cause a lot of heat as others have said so I would recommend using risers on at least one card.
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