880M SLI Overclocking with svl7 vBIOS?

Hey guys,

I bought svl7 two beers and got my hands on his vBIOS for 880M, and am playing with it right now.

NVIDIA GeForce GTX 880M video card benchmark result - Intel Core i7-4712MQ,Alienware 01W2J2 stock vBIOS, stock clock (954 MHz / 2400 MHz)
NVIDIA GeForce GTX 880M video card benchmark result - Intel Core i7-4712MQ,Alienware 01W2J2 svl7 vBIOS, modified stock clock (993 MHz / 2400 MHz)

I'm wondering, has anyone tried overclocking these graphics cards? Anything over 993 MHz is giving me driver crashes, and the only way to make even a very small overclock semi-stable is to overvolt significantly. Maybe I got a derp sample?

 

They're overclocked 780Ms with more RAM, nothing more.

You will have to overvolt to overclock because nVidia pushed the clocks to the max they could squeeze out of 1v.

Watch out using the modded vbios, the cards don't like to go to their 2D clocks so they'll run at 1v all the time keeping the fans and power consumption up.

 

^ what he said, pretty much. XD.

 

Plus, it's not an easy task keeping the temps below 80c when over clocking these cards. Both myself and Ethrem, as well as a few others, have reported multiple issues with this latest "flagship" card. There's a thread over at the GeForce forum regarding the issues that are crippling the 880m's performance.

 

I guess I'll run them at 993MHz then - thanks for your replies! With the modified vBIOS, the temperatures reach exactly 80 degrees in prolonged gaming.

Another issue though with the modified vBIOS is that it seems to crash the graphics driver when running SLI on battery - maybe a current draw issue from reducing the throttling? I hope nVidia gets on this so that the stock vBIOS doesn't throttle so excessively.

 

If your cards don't downclock on battery or without much power draw, then you need the stock vbios until it's fixed if you plan to use that on battery much. My 780Ms with modified vBIOS downclock, so yours should too, but as ethrem and others keep saying, they don't always do so. They would crash from too great a power draw, most likely yes. Your battery can't even power one of those cards let alone both + the CPU XD.

You're also harming your battery if you try to overdraw on it a lot; so you shouldn't try to game anything heavy on battery at all, as a general rule.

 

But remember that up to drivers optimise certain games.

 

ok, I am replying because somehow, my sli(s) are able to overclock, getting a 6000MHz vram and 1020 core clock, which gives me 16800 graphics score on 3dmark 11. I have not increase the voltage settings but I did overclock the cpu with a little voltage and current tweak. Your rams are way faster than mine though, because I have no idea ho to overclock ram, LOL, guess I am a newb in this section. I think I can achieve higher scores with a ram overclock.

 

Every card is different but good work on the tweaking are there memory speed options in xtu?

 

Here's a guide that I wrote on how to overclock RAM - if you're not going off SPDs, be careful since the machine may not boot and you will need to BIOS reset by power drain + RAM removal.

Also, as a side note, has anyone else been experiencing really weird issues with 347.88 drivers? They seem to make things run anywhere between 10-15 degrees hotter, and crash every few minutes. (EDIT: Never mind, seems to be a faulty ZIF cable causing shorts.)

http://forum.notebookreview.com/thr...at-rated-and-higher-speeds-on-aw18-r1.768341/

 

just to chime in. Running 880m sli and just updated to 347.88. I'm getting much higher temps and crazy throttling. Dropping Into the 600's within 5 minutes at 80 degrees C. Going to have to figure out how to run DDU but don't know which driver to revert back to. Any suggestion on which driver would be the best for running 880m sli at stock speed?

 

What is your system?

Try the following:

1-Unstall nvidia driver using display driver uninstaller, and download nvidia 327.23.

2-Remove the battery.

 

Don't resurrect old threads lol...

Im running full stable stock 350.12 because of GTA 5

 

Thanks for the response and suggestion. Guess I should put my system in my signature at some point. Anyway, it's an AW18, I7-4810, 16 GB, 880m sli. I actually reverted to 347.09 at the moment and need to run some tests. Took a few tries to get everything to install correctly. I did try to go back to 344.75 but got a message stating there was no supported hardware found my computer which makes no sense. This is with me running DDU in safe mode and ccleaner after to make sure all had been removed.