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MSI GTX 980 Ti Lightning Owners Club - Page 110

post #1091 of 1095
Quote:
Originally Posted by NSRNT View Post

1546Mhz Gpu / +600 Memory daily use. Of course with full cover block.

Wow! Mine in air doesn't get out of the mid 60's but doesn't seem to OC well. I haven't really messed with it too much. Stock boost to 1392 MHz and is flawless.

I read that these are finicky to overclock. Is that true?
post #1092 of 1095
i use artmoney voltage hack for msi afterburner. 1.430v for gpu, 1.72 for memory smile.gif if i did not use, i set it 1530 for 1.294v and +400 memory
post #1093 of 1095
Sup fellow overclockers wave2.gif

After a couple of weeks of getting into OC'ing (by reading, researching and learning about) this beast, I think I've reached the limit of the Core Clock on my first GPU.

During GPU load:
GPU Boost clock is at 1507 MHz
Max measured GPU power: 104%
Max measured fan speed: 60%
Max Core temp: 69°C (open case on air at 20°C ambient)

MSI AB settings:
+102 MHz Core Clock
+50 mV Core Voltage
-100 mV Aux Voltage
+25 mV Memory
MSI AB reported voltage: 1.212 V (during load)
Actual measured voltage using a multimeter (including vdroop): 1.175 V (during load)

I've created a modified bios where I adjusted the following things:
  • disabled GPU boost 2.0 voltage limit (when Core Voltage is adjusted by +50 mV)
  • setting GPU boost to 1405 MHz
  • custom fan curve 0% til 50°C, 80% at 72°C, 100% at 85°C.
  • increased maximum power limit to 167% (although at this time this isn't really benefiting my OC...)

At 1507MHz it is absolutely stable (Fire Strike Extreme - Graphics 1 and Graphics 2 on loop of 7+ hours each).
At 1519MHz it is 'mostly' stable.
At 1532MHz it is not stable (consistent crashing during FFXIV Heavensward benchmark).

Things I've tried to prevent crashing with a higher Core Clock:
  • 100% fan speed, lowers Core temp from around 68°C to 51°C, this still resulted in a crash during FFXIV Heavensward but at a later point
  • increase Core Voltage by changing to MSI extended and changing voltage in steps of +12.5 mV until I've reached the 'maximum' of 1.3V, resulting in crashes at (almost) the exact same point during FFXIV Heavensward
  • decreased Memory Voltage to -50 mV, in the hope it would make higher Core Clocks more stable

I might still try fiddling with boost states values in the bios tweaker to get a higher stable Core Clock, but that seems to have a small chance of resulting in anything.
I could try to obtain a special MSI AB version where I can lower the aux further than -100 mV (or could try to do the hack via a debugger) and see if this might help.

I feel like I can't really get to the real potential of this card and it seems that I might be missing something?
Would you suggest moving on to finding the Memory Clock OC limit of this GPU?
Or if any of you have other suggestions that would be appreciated thumb.gif
Edited by n2k3 - 3/9/17 at 3:33pm
Spike
(20 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core i7 5820K Asus ROG Rampage V Extreme X99/U3.1 MSI GeForce GTX 980 Ti Lightning MSI GeForce GTX 980 Ti Lightning 
RAMHard DriveHard DriveHard Drive
Corsair Vengeance LPX 32GB(4x8GB) DDR4 3200MHz Samsung 950 Pro 512GB M.2 Samsung Spinpoint F1 - 1TB Samsung Spinpoint F3 - 1TB 
Optical DriveCoolingOSMonitor
Sony NEC Optiarc DVD-RW Noctua NH-D15 Microsoft Windows 7 Ultimate x64 SP1 Asus ROG Swift PG279Q 
MonitorKeyboardPowerCase
Sony GDM-FW900 Roccat Ryos MK Pro (Cherry MX Brown) Corsair AX1200i Antec P280 
MouseMouse PadAudioAudio
Roccat Kone Pure Military Steelseries Qck+ Klipsch 5.1 Speakers R-25C, R-15M (x4), R-10SW Harman/Kardon AVR 171 
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Spike
(20 items)
 
  
CPUMotherboardGraphicsGraphics
Intel Core i7 5820K Asus ROG Rampage V Extreme X99/U3.1 MSI GeForce GTX 980 Ti Lightning MSI GeForce GTX 980 Ti Lightning 
RAMHard DriveHard DriveHard Drive
Corsair Vengeance LPX 32GB(4x8GB) DDR4 3200MHz Samsung 950 Pro 512GB M.2 Samsung Spinpoint F1 - 1TB Samsung Spinpoint F3 - 1TB 
Optical DriveCoolingOSMonitor
Sony NEC Optiarc DVD-RW Noctua NH-D15 Microsoft Windows 7 Ultimate x64 SP1 Asus ROG Swift PG279Q 
MonitorKeyboardPowerCase
Sony GDM-FW900 Roccat Ryos MK Pro (Cherry MX Brown) Corsair AX1200i Antec P280 
MouseMouse PadAudioAudio
Roccat Kone Pure Military Steelseries Qck+ Klipsch 5.1 Speakers R-25C, R-15M (x4), R-10SW Harman/Kardon AVR 171 
  hide details  
Reply
post #1094 of 1095
Hello guys,
I have the Gigabyte 980Ti Xtreme Gaming.It has an extra 6pin and an LN2 bios switch.If I switch to the LN2 bios as it is described for Lighning cards on page 1, nothing happens in afterburner.Does anybody know how I can get in that "extendet" mode for my card ?
I hadnt plugged in he extra 6pin cuz I cant find the cable atm.Do you guys think the extra 6pin is necessary for the card to go into "unlocked mode"?
I will try with extra 6pin tomorrow.
post #1095 of 1095
Extended mode in Afterburner gives you access to voltage control. Only a select few 980 Ti models have access to memory and auxiliary voltages. The MSI Lightning and the EVGA Kingpin are the two that I know of. For the rest, only the core voltage can be altered.
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