880m Overclocking like a Beast HELP

You're best off posting over at the Tech Inferno forums, there's a vBIOS Request Thread here at this link:
BIOS / VBIOS modification request thread (svl7)

 

i didn't exoect i needed to request , i thought it would be done later for 4gb version....

 

Why would he work on something for which there was no request?

Sent with love from my Galaxy S4

 

Hi Guys, sorry real noob question here, if I flash the Bios do I have to do anything else or will the voltage adjustment be open on Nvidia control panel?

 

You use an overclocking program to manipulate the voltage. I recommend NVidia Inspector, that's what I use, and it enables all the functions that are open to the modified vBIOS (some other overclocking programs don't allow for manipulation of all the variables).

 

Ahh good stuff, that's what im using at the moment while slightly clocking my card.

So will it end up with more sliders to use? I have an 880m with unlocked A11Bios at the moment and there is an offset voltage slider, will there be another voltage slider open up?

 

You will likely get a 'Power' slider too, this is where you can set the TDP limit of the card (Watts, current consumption of the card). Overclocking & increasing voltage increases the current demand, therefore the 'Power' slider allows you to increase the level of current that the card will use before it throttles.

 

Excellent, ive done it and now I have the power bar!!

Im testing with black flag, and so far I have 500 memory clock, and im trying 80 base clock. the FPS are incredible but it keeps crashing the game, what should I turn the power up to? And also what does "Prioroze Temp" do?? Cheers

 

"Prioritise Temp" means that if that is checked then it will supposedly prioritise temperature over power, meaning it will throttle when it gets to that temperature. I suggest you leave that box ticked, and set it to a maximum temperature that you're comfortable with, e.g. 90 degC. If your games are crashing then your overclock is probably not stable - you either need more voltage or lower your Mhz - could be the memory or the core, but the voltage you change is only affecting the voltage of the core, not of the memory, so be aware of that - upping the voltage in that program is not going to enable you to get a higher memory clock.

Be aware that there is a quirk with the 880M model in particular: if you overclock & crash the card once too often, the frequent crashing sets some kind of 'flag' within the GPU that will make it run literally like garbage (you'll end up with really low fps), so I'd warn you against making the card crash too often - how many times is OK I don't know, and what I said in this paragraph is just off anecdotal evidence - I don't have an 880M.

 

ok thanks, hopefully ive not mucked it up!!

 

Hey mate, thanks for your help. Just one more quick question, unless i put it at 50 core clock and 500 memory it just crashes on everything. I think Ive stopped pushing it in time, but Ive seen screen shots of people with like 135 core?? How come mine just wont go anywhere near that do you think? Tanks

 

Well, not every GPU is overclockable to the same degree - it's just luck of the draw: you either get a good overclocker or a bad overclocker, or somewhere in between. If your temperatures are high, that can make your overclock unstable, also you might just need more voltage (but obviously the voltage also increases the heat!). The 880M's generally don't have much overclocking headroom left in them, because they run really close to the voltage/Mhz stability line already...that & also they run close to the thermal limits too in most laptops.

 

Yep it would appear that mine has gone boom

Now even with no clocking at all every now and then theres a quick flash then it drops to half the FPS, then when you exit the game it crashes.

Is there any hope or do you reckon thats it?

 

Did you back up your vbios? Flash back to the stock vbios if you did and start up windowed mode and monitor GPU-Z to see if the 3D clocks are going where they should.

I'm kind of surprised you got a card that won't do +50 with higher voltage. Stock voltage will crash at anything over 10 or 15 but 1.025 or 1.0375 should be good for +50 I'd say.

 

NVIDIA GeForce GTX 880M video card benchmark result - Intel Core i7-4810MQ Processor,Notebook P15SM-A/SM1-A

this was just a mess around. 83c max temp with 87.5mv added. whenever i increase the core speed more, 3d mark 11 opens, but stays black screen and never loads or starts idk why

 

Phhhhheeee-ewwwww!!! Cheers guys, It looks like I'm OK, I flashed back to my original vBios and checked.... No crashing. So I gently raised to 50 core and 500 memory and its solid.
I think I'll leaver it well alone at that, as I'm only up for squeezing FPS in certain games. Good thing is though, through this whole ordeal the card has never gone above 68degrees so I'm sure there's no damage!!

Cheers for all the help guys

 

Eh guys question... this GTX 880M is compatible with the old MSI GT60 (16F3) board? Just plug and play? I have an unlock bios which has an option to enable/disable "Launch Video OpROM" UEFI driver..