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ATI 5750/5770 Crossfire problem

post #1 of 17
Thread Starter 
Okay so I have these 2 cards HD5770 and HD5750 crossfired and I cant overclock them because I get the problem with the horizontal lines running down my monitor. I am running dual monitors and it only happens on the left monitor, my main one. It also only happens when they are overclocked or underclocked.. even if it is just 5MHz!!!

I have tried the fix with the profile changes with CCC. (changing the idle core clock)

I have overclocked with AMD Overdrive and MSI Afterburner and Trixx. (obviously not at the same time)

I am at a loss for what to do. I realize these cards are kinda old so I thought I could find an answer on a forum, but I have been looking for 3 hours straight with no luck. I am wondering if I should consider flashing my GPU bios?

Also I have tried running the cards separately (ie 1 card installed at a time) and both cards exhibit the same behavior independently. Its like they cant be overclocked for some reason, but i know they can!

I also feel like they cards under perform in crossfire which is why i want to overclock them.

More info;
System specs:
Intel i5 760 @ 3.5
8Gb G skill ram
windows 7 pro 64x
Sapphire HD 5770
XFX HD 5750

Thanks for any help!
post #2 of 17
They "underperform" because they both run at the 5750 stock clocks. Running crossfire between two GPUs that aren't the same isn't guaranteed to give great results. Trying using a single monitor instead of two. Flashing the BIOS isn't going to fix this.

And last thing, if they don't want to OC, then they won't OC. Not every card is going to OC, you may just have a bad pair.
BlueRaven
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BlueRaven
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Dead BIOS
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post #3 of 17
Thread Starter 
Yeah i understand that they will both perform like a 5750, but I dont understand how both can be bad and not overclockable. They were purchased on different days from different places. One is sapphire and the other XFX.. what are the chances of that? Even just running the cards seperately( one at a time) they cant overclock..
post #4 of 17

No, there's no way the 5770 can downgrade the shaders count to 5750 in Crossfire Crossfiring between different card of the same series

 

Your problem is not that.

 

Disable ULPS, more details how to; [Fixes] Catalyst Drivers Error & OC & Eyefinity & General Issues

 

ケンジ
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ケンジ
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GraphicsRAMRAMHard Drive
2x 6990 + 580 16GB 2133 MHz 24GB 2000 MHz 120GB x 2 RAID0 
Hard DriveHard DriveCoolingCooling
120GB x 4 RAID0 Raptor 300GB x 2 RAID0 CPU-370 CPU-370 
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post #5 of 17
Thread Starter 
I have stripped my GPU down to just one now. The HD 5770 is the only card in my computer and I am having the same problem. I disabled the ULPS and that didn't work... any other ideas?
post #6 of 17
Having that problem with either card and having run them alone and still same problem would
not suspect the cards.

Board lane problems a possibility.
Also maybe software conflicts.
Reload a possibility?

I've run two XFX 5770's in CF for almost two years and as far as all the CF cards have run in the past, Are the very best
as to OC-Scalling and voltage input ability.
Only reason for sticking with them for so long.
Soon gone for 7970 or FX680 as benching and pricing determine.

399
374

Good Luck.

Later:D
Edited by Irocing - 3/20/12 at 2:43pm
Works for me
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Works for me
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i7-930 4.51 HT on Asus P6X58D-E Sapphire 7970 OC Edition 1250/1650.1.200v Corsair Dominator 1600@1723 
Hard DriveOptical DriveCoolingOS
Crucial 128 M4 Boot-WD 640 Sata3 Storage Plextor/ Samsung 600.5- 3 Rads-Micro Rez-355 Pump Win 7 64 bit he 
MonitorKeyboardPowerCase
Samsung 26'' 1920x1200 Logitech G-15 CM 850W Modular Gold CM 690 II Advanced (Swiss Cheezed) 
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RatPaz GS SB Titanium- Bose 2.1 
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post #7 of 17
Thread Starter 
Okay so I thought that maybe if i updated my bios then maybe that would fix it, but it did not. I just recently (3 days ago) did a clean install of windows 7. Is there a possibility that there is a problem with my mother board?
post #8 of 17
Thread Starter 
Also IROCING, I am not able to adjust my core Voltage with afterburner. Why are you able to adjust yours?
post #9 of 17
Thread Starter 
Okay I might have found the problem. When my computer is idle, the GPU clock drops to 157 MHz when it is overclocked and the screen flicker happens when it goes in and out of idle state. (ie 157 MHz to 705 MHz). When the computer is idle and the gpu is not overclocked, the GPU clock idles at 400 MHz. So how do I keep my idle GPU from dropping to 157 MHz when it is overclocked?
post #10 of 17
What you're seeing is the card dropping back to 2D clocks. I'm unsure how to fix that.
BlueRaven
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Dead BIOS
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BlueRaven
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Dead BIOS
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