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Sapphire HD7970 Vapor X OC'ing Help Please

post #1 of 15
Thread Starter 
Hi,

I was wondering if someone could help me out with OC my sapphire HD7970 vapor x ? I would like to have this resolved soon so if it is a bad card I only have about a week left to send back to newegg. Stock clocks 1050/1500 at 0.947V idol - 1.150V under load. MVDDC 1.500V

My first issue is any time I increase the memory core I get screen flashing, along with the VDDC will increase from 0.947 to 1.246 while idol.

Next is if I use sapphire trixx to OC (any version) it will crash my computer unless I use constant voltage enabled.

Trixx has my stock voltage set to 1.256V, but no matter where I set it with DLPS disabled along with constant voltage enabled my VDDC will drop much lower then where I have it set during activity(like 1.160V). Board Power Li is set to +20%, I have tried disabling and enabling CCC overdrive while using Trixx to OC with no change.

I have tried different drivers of CCC with no luck, also switched the bios on the card its self. I did clean installs/uninstalls of drivers using the guide on this site.

My max OC without having issue so far is 1200/1500 at stock voltage 1.256V Board Power Li +20% (Still have the VDDC Drop during load)and I would like to know what I am doing wrong or is this a hardware/software issue ? My ASIC is 65.9%

System Specs -
Intel I5 3570K 4.5GHz
Asus Sabertooth Z77 MB
G Skill Sniper 16GB 1866MHz
Corsair HX750 power supply

Let me know if any more info is needed to help trouble shoot.

Any help would be greatly appreciated.

Thanks
post #2 of 15
To just give a quick fyi, my vapor-x 7950 oc,s much better using MSI afterburner than trixx, I had issues with all trixx, even the modded one.
Plus, afterburner has mem voltage control. So try afterburner and see what happens.
    
CPUMotherboardGraphicsRAM
8350/4.8 Asus Crosshair v formula z Sapphire Vapor x 7950 Crucial BalisticTactical tracer-1866/9-9-9-24 O... 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 128gb Western Digital Caviar Black 2 TB SATA III 7200... Asus Burner Corsair H100  
OSMonitorKeyboardPower
windows 7 ultimate 64 bit Asus ve258q Logitech G19 seasonic series x-1250  
CaseMouseMouse PadAudio
InWin Dragon Rider Logitech G 500 thermaltake lighted logitech 5.1 506 
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SB 3D recon sound card 
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CPUMotherboardGraphicsRAM
8350/4.8 Asus Crosshair v formula z Sapphire Vapor x 7950 Crucial BalisticTactical tracer-1866/9-9-9-24 O... 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 128gb Western Digital Caviar Black 2 TB SATA III 7200... Asus Burner Corsair H100  
OSMonitorKeyboardPower
windows 7 ultimate 64 bit Asus ve258q Logitech G19 seasonic series x-1250  
CaseMouseMouse PadAudio
InWin Dragon Rider Logitech G 500 thermaltake lighted logitech 5.1 506 
Other
SB 3D recon sound card 
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post #3 of 15
Thread Starter 
I downloaded AB and it had Voltage control lock even with me enabling it in the options.

I had read that with AB you could change the MVDDC and thought maybe that would solve my issue with increasing the memory core but because it was locked for me I never got the chance to try it.

But I still do not understand why increasing the memory will increase the VDDC at idol but then still drop it during activity with constant voltage enabled and DLPS disabled.

Thanks
post #4 of 15
For one your core and mem voltage should not be locked on that card. for mem you should be able to go up too 1.7 with AB.
If your mem on your card is eplida it is 1.5 stock, if it is hyinx it should be 1.6.I have force constant voltage and power limit at %20.

And in AB make sure in settings you have unlock voltage control and monitoring checked, also try checking extend limits. Also in AB to show mem voltage click the bar with the down arrow button on it on the upper right side. What are you using to monitor the voltage.
Edited by fishhawk - 5/27/13 at 8:02pm
    
CPUMotherboardGraphicsRAM
8350/4.8 Asus Crosshair v formula z Sapphire Vapor x 7950 Crucial BalisticTactical tracer-1866/9-9-9-24 O... 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 128gb Western Digital Caviar Black 2 TB SATA III 7200... Asus Burner Corsair H100  
OSMonitorKeyboardPower
windows 7 ultimate 64 bit Asus ve258q Logitech G19 seasonic series x-1250  
CaseMouseMouse PadAudio
InWin Dragon Rider Logitech G 500 thermaltake lighted logitech 5.1 506 
Other
SB 3D recon sound card 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
8350/4.8 Asus Crosshair v formula z Sapphire Vapor x 7950 Crucial BalisticTactical tracer-1866/9-9-9-24 O... 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 128gb Western Digital Caviar Black 2 TB SATA III 7200... Asus Burner Corsair H100  
OSMonitorKeyboardPower
windows 7 ultimate 64 bit Asus ve258q Logitech G19 seasonic series x-1250  
CaseMouseMouse PadAudio
InWin Dragon Rider Logitech G 500 thermaltake lighted logitech 5.1 506 
Other
SB 3D recon sound card 
  hide details  
Reply
post #5 of 15
Thread Starter 
I will download AB and give it another try, GPU-Z 0.7.1

Thanks
post #6 of 15
Thread Starter 
Still not able to control voltage with AB ?
post #7 of 15
Turn off CCC overdrive, use Trixx, set board to plus 20, overclock the core 1st leave the memory alone, then overclock the memory. You already had it right. 1200/1500 is a good overclock.

1.25v isnt bad just depends on how hot the card gets. Find the max core voltage and max memory you want to run. Slowly lower the voltage and bench till the driver crashes then raise the voltage up a little so the card wont crash and be happy. You will probably find that 1200/1500 is what you will run but at a lower voltage than you had before.
post #8 of 15
Thread Starter 
Thanks for the help thus far smile.gif

But I have a few questions.

Why does trixx need to have constant voltage enabled in order to not crash my system? and if its set to on, what's a good starting point for voltage 1.175?

Why can I get a pretty good OC on the GPU core but can't increase the GPU memory by 1 without the screen flashing and my VDDC increasing from 0.947V to 1.246V at idol then still dropping to around 1.150V at full load? no matter if I am using trixx or ccc to OC and that's with DLPS disabled along with constant voltage enabled in trixx.

As for settings using trixx to OC do I have it right, disable overdrive in ccc, disable dlps, enable constant voltage, +20% board power li, start at stock voltage 1.256V ?

Temps seem fine during stress testing, never goes above 69C with fans on auto.

Sorry for all the newbie questions but I just feel like I am missing something with my OC or doing something wrong. I would love to get the most out of this card and if it's a faulty card send it back ASAP to get a better working card.

Thanks
post #9 of 15
Thread Starter 
Update

I did some more testing tonight and found out that 1200/1500 was stable during testing but in games I seen artifacts, so I had to bump it down to 1175 to eliminate any artifacts in game.

I also noticed that during games and stress testing I was able to increase the memory to 1700MHz with no issues aside from the screen flashed for a second after I change it and my VDDC went from 0.947V to 1.246V at idol.

Sapphire Trixx has gone back to crashing my system even with constant voltage enabled mad.gif

Well I don't think I am any further ahead with this so any more input would be greatly appreciated.

Thanks
post #10 of 15
you can leave off constant voltage. Just up the voltage more and try 1175 again. use GPU-z to make sure your card is not being throttled. These same things happened to me till i got everything dialed in.
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