Having major problems with ATI 5850 crossfire - Help wanted\r
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PC desctiption\r
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Asus Maximus İ Formula\r
Core i7 860\r
Geil 4GB DDR3\r
Enermax Galaxy 850W\r
Sapphire ATI 5850\r
XFX ATI 5850\r
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Problem dectription\r
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Besides what you see in the video, Crossfire is reported enabled in Catalyst but \r
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it doesnt work. It doesnt work regardless of the PC being overclocked or at \r
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stock. These samples were recorded with everything at stock speeds, with \r
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Catalyst 9.12 Hotfix installed.\r
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Catalyst 9.11 produces the same results as the 9.12 which are glitches in some \r
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games and zero scaling in all games or even lower performance than one card.\r
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What I tryed so far\r
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Each card on each own works fine. Each card works fine, regardless of the slot i \r
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slot it in or what cables of the PSU I use to power them, as long as it is the \r
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only card in the system. That means that all power rails work fine too! My PSU \r
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has different rails for each graphic card.\r
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Driver uninstallation, cleaning with driver sweeper and driver reinstallation. \r
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The same thing happens all the time, in both at 9.11 and 9.12 and 9.12 hotfix.\r
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Tryed my Vista64 installation. Fuck. The same happens in that OS too!\r
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Tryed with OC settings and BIOS reset. Again nothing.\r
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Rechecked my temperatures. They are fine. Heck the damn thing glitches right \r
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from the start.\r
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When I disable Crossfire through Ç the single card works fine.\r
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I tryed switching primary with secondary card. Nothing changed and again when \r
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disabling crossfire, the primary card (whichever it is XFX or Sapphire) works \r
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fine.\r
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I tryed using one or two Crossfire ribbons.\r
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Any more suggestions? As a last resort, I will install them on my Q9550 rig to \r
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see if the same happens. If the same thing happens there is some incompatibility \r
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between the two cards.\r
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If there will be no issue, then there is something wrong with my CPU or mobo, \r
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but wouldnt it pop up its ugly head even when one card was installed on the \r
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secondary slot? I mean if it was a cpu on die PCIe controller issue, then it \r
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would be a problem of the secondary slot, since the primary slot works ok \r
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anyway. The same goes for the mobo. If the second slot had a problem, it would \r
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work when one card was installed!\r
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Any suggestions?
