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Question about MSI 580 OC'ing with Afterburner.

post #1 of 5
Thread Starter 
So I want to over clock my Lightning, ignore the DCII, it's being sold for me to get another lightning in my sig.

I have MSI Afterburner, I know how to use the basics of it, but whenever I get to about 890 without giving anymore more mV, it freezes up. now, I've never moved the slider, because I don't know how much to give, or even what the video card will take. Anyone done this before with this card and afterburner, give me a little tip here? Like how much mV from +0 do I go up? How much can this card generally take?
post #2 of 5
Hey sorry the Asus cards ended up not working out for you man.

Lot's of good general information here in the 580 OC thread. But generally first you want to make sure you are on the latest MSI AB 2.2.0 beta, then in settings, general, "unlock voltage control" and "unlock voltage monitoring", then in the monitoring tab, in the middle of the page under "active hardware monitoring graphs", scroll down to the bottom and check "GPU voltage" and I'd also recommend checking "VRM temperature" and "Memory temperature". Then after it will ask you to restart (I think) go and put your GPU under load and check the graph for your GPU voltage to see what your stock voltage is. From there you would use the voltage offset to determine what you want your voltage to be. Say for example your stock voltage is 1.025v under load, then a +75mV would bring you to 1.1v etc.

That should help you understand the way your voltage adjustment works. As for safe voltage limits unless you have drastically lowered the fan profile from it's stock curve then going straight to 1.1v will be no problem for the Lightning. From there I would gradually and incrementally increase both your core speed and the core voltage (I don't use or advise others to use the Memory or PLL/AUX overvoltage mostly because they aren't necessary but also because I don't know the safe limits for those) as needed while testing in an appropriate stress test. My favorite is Unigine Heaven for about 15 minutes in between incremental increases and 30-45 minutes as a more final stability test once you think you're stable. In Unigine watch for rays of colored light as signs as instability, they look like sun rays but independent of the sun and in any color, as well as more typical signs of instability such as the program, your drivers or your core clocks crashing. Watch your temps as you incrementally increase the core clocks and voltage and until you get pretty comfortable with the limits of what to expect from your card and what it can do I would stop at 1.15v which is a good balance between a high level of safety and still plenty of room to OC from where you stand now.

Good luck, have fun, and I would post any further questions in the 580 OC thread linked above, but what I've given you here should get you off to a good start.
Edited by juano - 10/18/11 at 4:48pm
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post #3 of 5
Thread Starter 
Bleh, read it too fast. I loved the Asus cards, but they take up so much room, which sucks, cause they look amazing. =(
Edited by Motive - 10/18/11 at 5:12pm
post #4 of 5
It depends on what your stock voltage is. I think I addressed this in my previous post on how to find out what your actual voltage is and how to use that to get a baseline for what the mV offset would need to be for a desired voltage. Reread my entire post and if you still don't understand try and be a little more specific of what you need clarified.
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CPUMotherboardGraphicsRAM
Intel i7 2700k ASUS P8P67 WS Revolution EVGA 980 Ti SC+ Samsung 4x4GB DDR3 1866MHz 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 Evo 1TB Samsung Spinpoint F4 2TB Samsung BD Combo Noctua NH-D14 
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Windows 10 64 bit Asus PG279Q Kingwin Lazer Platinum 1000W Silverstone Raven RV03 
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CPUMotherboardGraphicsRAM
Intel i7 2700k ASUS P8P67 WS Revolution EVGA 980 Ti SC+ Samsung 4x4GB DDR3 1866MHz 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 Evo 1TB Samsung Spinpoint F4 2TB Samsung BD Combo Noctua NH-D14 
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Windows 10 64 bit Asus PG279Q Kingwin Lazer Platinum 1000W Silverstone Raven RV03 
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post #5 of 5
Thread Starter 
Yeah, I derped it up. I was doing multiple things while I was trying to get this figured out, as well. Read too fast. Stock voltage is 1.031
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