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    GA-990FXA-UD3 gpu 1 always slow

    Mining
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    • A
      angloblaxon Regular Member last edited by

      I have 3 GA-990FXA-UD3. everytime i run 4 cards ie 280x. i get only 680 kh/s with gpu 1 (second card). This happens with all motherboard. Anyone run into this issue?

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      • S
        s2 bergen last edited by

        Not sure how much it similar to yours problem but : I was having 3rd gpu DAmn slow like 100-250 mh/s. Was banging head all over forums, and after all work with settings, swapping gpus - was same shit. So i gave up. Unplugged monitor and left it. After 20 min or so I connected back, and at my surprise all 3gpus was ar 750mh/s.
        So now what’s happening : when I restarting pc and have display connected i have 1 gpu very slow, and it’s usually not the one that display is connected. After unplugging display, it’s getting back up. When connecting display back sometimes speed of 1 gpu drops, sometimes no.
        Sent from android while reinstalling windows, due crashing it with 4th gpu added :-)
        Edit : i running R9 280X vapor x, with Win7 x64

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        • A
          angloblaxon Regular Member last edited by

          i have 8gb on my system and do not use it for anything besides mining.

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          • A
            angloblaxon Regular Member last edited by

            its just weird. i cant explain it.

            gpu 0 @ 710 - 720 kh/s
            gpu 1 @ 670 - 680 kh/s
            gpu 2 @ 710 - 720 kh/s
            gpu 3 @ 710 - 720 kh/s

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            • T
              TheTribesman last edited by

              [quote name=“angloblaxon” post=“43595” timestamp=“1386883933”]
              its just weird. i cant explain it.

              gpu 0 @ 710 - 720 kh/s
              gpu 1 @ 670 - 680 kh/s
              gpu 2 @ 710 - 720 kh/s
              gpu 3 @ 710 - 720 kh/s
              [/quote]
              A shot in the dark, but try dropping intensity on GPU 0 by 1 notch. I had something like this. I dropped intensity on GPU 0 down 1 notch and it disappeared.

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              • M
                moafred last edited by

                I have exactly the same problem with the same motherboard.
                I run 2 280x toxic.
                Most of the time they both run at 750kh, but after a time the hashrate of one card fall to 350kh (temp 70° max, so not too high).

                I use 8Gb of RAM and a Athlon X2 270. I wonder if the CPU is not a bit too weak.

                Even after a reboot the hashrate does come back to the max value.
                It seems that if I unplug the card for a while and plug it back, the hashrate comeback to the max value.

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                • S
                  s2 bergen last edited by

                  Damn… Installed 4Th gpu, and have same problem as yours. My hardware :

                  Mobo : x79a-gd45 plus
                  CPU : Intel Xeon E5-2603 v2
                  Ram - 4gb
                  Gpu : x4 - Sapphire R9 280x Vapor x
                  Psu : Corsair AX 1200i

                  Windows 7 Ultimate x64

                  Any help would be much appreciated and probably rewarded :

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                  • R
                    RIPPEDDRAGON Regular Member last edited by

                    I was having the same exact problem with my new Gigabyte R9 280xs that I got last night…the first GPU was always like 100 KH/s slower. I could tune them to popular settings and the first card would stay in the 600s and the secondary cards would all ramp to 750KH/s. What seemed to be the problem when I was looking in afterburner was that the memory on the first card was almost completely used up and everyone else was using a bit less. I had to turn down my settings a little bit until the first card could run like the rest of them. I actually ended up using the same settings that are on my MSI 7970s -g 2, tc 21105, gpu clock 1050, memclock 1500 and got 730KH/s on all of the cards…I DONT KNOW WHY THESE SETTING ONLY WORK FOR ME WTF… I can never get other’s settings to work on my cards…they always end up with some weird TC value. If I get more time to test I want to see if its the OS I have been using for my Image that is the reason for only weird setting working.

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                    • A
                      angloblaxon Regular Member last edited by

                      yea it must be some weird OS usage issue. Anyone reporting this that is on linux? im a windows user ( cause im lazy )

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                      • S
                        s2 bergen last edited by

                        Watching at 2 rigs with same hardware, one is on win7 (catalyst 13.9) and another is win8 (catalyst 13.11)
                        Conf. files is same
                        Windows 7:
                        752-755 kh/s
                        752-755 kh/s
                        752-755 kh/s
                        649-666 kh/s

                        Windows 8:
                        753-756 Kh/s
                        753-756 Kh/s
                        665-720 Kh/s
                        753-756 Kh/s

                        Looks like windows8 is better a litle bit :) Will install win8 in first rig to, on Sunday. And will post update.

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                        • A
                          angloblaxon Regular Member last edited by

                          yea this one with issue has windows 8 as well :-S

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                            Ernesto last edited by

                            [quote name=“s2 bergen” post=“43910” timestamp=“1386967027”]
                            Watching at 2 rigs with same hardware, one is on win7 (catalyst 13.9) and another is win8 (catalyst 13.11)
                            Conf. files is same
                            Windows 7:
                            752-755 kh/s
                            752-755 kh/s
                            752-755 kh/s
                            649-666 kh/s

                            Windows 8:
                            753-756 Kh/s
                            753-756 Kh/s
                            665-720 Kh/s
                            753-756 Kh/s

                            Looks like windows8 is better a litle bit :) Will install win8 in first rig to, on Sunday. And will post update.
                            [/quote]

                            's good to know

                            +rep!

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                            • S
                              s2 bergen last edited by

                              Adding extra rams tomorrow, will see if any better will be

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                              • E
                                Ernesto last edited by

                                [quote name=“s2 bergen” post=“43944” timestamp=“1386970133”]
                                Adding extra rams tomorrow, will see if any better will be
                                [/quote]

                                the system scrypt requires [b]a lot of memory[/b], the system does not need is a sha256 bitcoin.

                                ;D

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