880M unlocked vBIOS released!

Yeah, the 880M stock won't boost pretty much ever. Custom vbios will have it boosting the whole time.

And n=1, I've thought about it... I really have... but considering that I built a desktop system, it doesn't make much sense.

I have a 4770K @ 4.4GHz (not the best chip - it takes 1.32v to get there), 32GB G.Skill Ripjaws X (1600MHz CAS9), EVGA GeForce 780 Ti SC w/ ACX...

It doesn't make much sense to go through the trouble of getting the laptop up to spec when my desktop can easily outperform it. I haven't tweaked the 780 Ti much yet but from what I understand, with a vbios mod those cards are wicked overclockers. Stock vbios got me 140MHz on the core and 400MHz on the memory, at least until it decided to go unstable out of the blue today. I powered on the machine to find both the video card and the CPU went unstable (CPU was at 1.291v)

Anyway, I'm not happy with the 880Ms. They're hot and the 780Ms are performing better across the board.

Be careful if you play with overclocking sa7ina... the driver crashes one too many times and you can't use any current driver if you want to get performance over what an Intel 4600 provides...

 

Well according to Mr. Fox 780M was also pretty broken out the gate, but eventually muscled its way past the 680M when all the kinks were figured out. Hopefully that'll be the case with 880M, otherwise it'll be a real shame. (although Meaker not giving his stamp of approval certainly does cast some doubt )

As to the P377SM-A GPU temps, there is one other (crazy) option... if you don't mind turning (hint hint) your P377SM-A into a desktop as well. Turns out the GPU X bracket for the P570WM is also the same as the P377SM-A. So this means a P570WM GPU heatsink would probably fit in the P377SM-A.

However, you're gonna have to tape the fan to the heatsink since the orientation will be completely off (in the P570WM the fan sits directly on top of the heatsink instead of beside it). Naturally this means you'll have to have the back cover off, and will have to use the laptop upside down, and so will definitely need an external monitor. I've actually done this upside down without back cover thing quite a few times when I was hard benching, but I've no idea the potential long term consequences of such use.

 

I am not gonna overclock it regularly...it's my work computer and i need it to last long and be stable for long rendering and compiling tasks.
but i want it to work on it's full potential tough...get it to work the way it meant to be...1250MHZ max mem clocks are not acceptable nor core without boost.
right now i'm still testing it's abilities and adjusting it to give me the best performance under stock clocks or near that...that's why i benching it.
after that it should be my working horse in the next 2-3 years.

 

1250MHz memory speed is correct. GDDR5 is quad-pumped so effective clock speed is 5000MHz.

 

Yeah and to be technical, the 954MHz is the stock clock... its the intended clock for the chip to run at, boost is an added bonus not a guarantee.

I will say that my cards do run hotter with the modded vbios, I had to repaste to get my temps down from 90C back to mid-upper 80s.

That mod sounds ridiculous to me n=1, I think I'll stick with it as is lmao.

 

so...now i'm confused.

 

haha yeah it's meant to be ridiculous

Although having posted that, I now understand why the P570WM a)is a good 0.5" thicker b) can cram 4 fans into a 17" chassis. Because the fans sit directly on top of the cards, so there's the added thickness, but because fans are on top of the cards, that leaves room for the 4th fan that's needed to cool the monstrous desktop CPU.

 

Its still a 1250MHz clock... nVidia has already doubled the clockrate in that example.

The cards run at 5000MHz

 

Yeah but considering one of my fans is already starting to make the high pitched squeal it took my M17xR1 3 years to exhibit... I'll keep my 3 fans. Probably will be replacing one of them soon though because the laptop sits on a dinner tray next to my futon and when I'm lying down, that squeal shoots right into my ear

 

Probably the master GPU fan, mine started squealing about 4 months into use (although only under load ie gaming) but it wasn't too obnoxious so I tolerated it. Only switched it out recently to confirm it was indeed the master GPU fan and I wasn't hearing things.

 

I think with a little undervolting i'll be able to run it cool at full speed.
we will see.

 

Mine appears to be the secondary... I'll have to test though.

Good luck. My cards wouldn't undervolt at all. They are literally pushed to their limit which is why they would never boost >=\

 

It is always a silicon lottery and the 880m is a 3rd chip release so will always be pushed more to the edge.

 

Well, you can just accept it as a silicon lottery thing, or recognize that NVIDIA screwed up royally. What we see is either an engineering defect or a bad business decision.

In case NVIDIA decides to delete my comment, here is what I just posted:

And, I will just put this right here for ammunition in case anyone needs more proof...

 

Under the 110w limit there is a cap on the performance kepler can provide regardless of what turbo speed is set.

unlocking the power would be cheating by nvidia and going out of spec. I always said the 880m was never an interesting product. At stock it's basically the same as the 780m.

 

Its worse than a 780M at the same clocks.

The only way that it is possible that it isn't is if the problem my machine has had all along was the power supply not being able to handle a 4940MX and 2 880Ms at stock. I guess I'll have to see what Sager has to say about the power draw of the system when I call them about the brick that just died. Mr. Fox was comparing my benchmarks to his at similar clocks and he was 9.7% faster than me

 

Other systems have shown a slight increase and his 780ms were at the same clock settings as the 880m (and using a custom vbios with power tweaks I think) , I'm talking stock vs stock.

 

But the most apples to apples comparison as to which is the superior chip is clock vs clock... if a 780M is beating an 880M clock for clock, what is the point of having an 880M?

Overclocking aside, the 880M should perform the exact same as a 780M when the frequencies are the same if its the same silicon but its being shown that the 880M is performing worse. At this point, the only thing 880M brought was higher heat (and I'd expect that a lot of RMAs are coming).

 

Not if voltage was boosted so the higher boost clock does not crash the system on any samples even if it can't be maintained as long.

 

This makes no sense to me. It would make more sense if they just took the same core as the 780M, exact same card, and doubled the RAM. The way these are performing, there is something extremely wrong with them.

I've been freezing since I went to the 340 driver but I'm afraid to go down to the old driver because I've seen that as the point where cards started uber throttling. So now I'm kind of stuck.

 

If you're talking about that nasty flag, apparently it doesn't get triggered until the driver crashes one too many times.

 

Well some of them are doing it out of the box and others randomly exhibit weird behavior then start working again just to screw up again. The scary part is that nobody has found the actual cause so it could happen to any one of us. I feel like I have ticking time bombs in my system

 

Yeah if you can't wait then ask XoticPC whether an exchange is possible; if you can then there's still some hope john or svl7 or someone in the community will figure out what's going on and find a way to fix it.

 

If i haven't need the extra memory i would have done so.
This is the weirdest thing i have ever heard about hardware.

so far i didn't flashed it nor over\under-clocked\volted it.
too risky messing with the mighty throttle flag.

dirty game from Nvidia...thumb down.

 

is this for sli?

 

Gtx880m has 8GB of memory. It means an extra watt usage of about 5 or 6 watts. Could it be possible that the problem may lie there. Can someone test the wattage(3dmark 11-heaven-furemark) of the machine with the same cpu and see the difference in power consumption at the same clock speed (993/1250) on gtx880m and gtx780m. I think part of the problem lies in the use of more memory on the new graphics card. Something is very strange with the new graphics card to Nvidia.


Edit : It is not so again earlier gtx card from Dell (Alienware) with 2gb memory was better than Clevo"s gtx cards with 4gb. (gtx680m)

 

Double density ram should not impact power considerably. Feel free to check the data sheets though.

 

I already donate $5, but I still cant download 880M unlocked vBIOS, help !!!!:cry:

 

Give the TI forum 5 quality posts and you are golden.

 

Thx to reply me, but I dont know how to post on that web, there is no option for post for my account. Can you teach me how to post ??

 

Create an account. Then you can post. Your first few posts will have to be approved my a moderator before they will show up. You just have to be patient. TI forums has this policy to keep spammers at bay. It seems to work very well.

 

I did create an account, but i can find "post".

 

If you go into a thread you should be able to reply.

 

Does the hardware "flag" still affect the card even with the custom bios? It seems to me that should negate the hardware flag?

So this mod works well, just adds a little bit of heat? Seems to me if one were to mod their cards and just keep the stock bios with no boost, it would be stable and wouldn't ever throttle under the stock. So in a way that right there would "fix" the card?

I get my laptop tomorrow and I'm very tempted to do this, depending on what you folks think. I trust your judgment here

 

I believe the flag is still there. Removing it could cause issues. The possibilities are endless but any increase in performance will always have extra power consumption unless you lower the voltage.

 

I'm skeptical as to whether this flag existed or was actually a card issue. It doesn't seem to be prevalent at all.

Sent from my HTC One_M8 on Tapatalk

 

hey guys,

I have two 880m's that I bought from upgradedonkey on ebay, when I flash to the unlocked vBios the system will crash on windows startup if not plugged in to wall power. And is not stable with any drivers tried thus far.

Before I get into any details of cads revision etc etc, I would like to know if anyone else had, and solved this issue. Or if anyone would be willing to help me get this sorted out.

Reason for wanting modded vbios is famous perfcapreason=PWR and the throttling that comes along with it.

Many thanks.

J

 

Unfortunately that vbios has a known issue where it does not throttle its core when on battery which will indeed cause crashing. When I had those cards, I found that GeForce Experience would kick the clocks up and sometimes they wouldn't come back down. There were only two solutions - always use the power brick which is inconvenient but reliable or remove GeForce Experience which wasn't always reliable. Games will also crash if the cord gets unplugged. The battery just simply can't handle the load the video cards put on it.

As for drivers, I didn't have an issue with any of them. The cards themselves aren't stable. If you're having stability issues, raise the voltage to 1.018v as svl7 undervolts the cards to 1v in the vbios while 1.018v is stock for 993MHz - that can help the stability.

 

Ahh that makes sense now, I thought the modded bios added voltage, jeez ok now thats making sense why its probably crashing on me when I try to boot up, adding voltage shouldn't be a issue because I'm having heavy throttling before the cards ever reach 68c (they never go above 70).

Can I mod my stock vBios with tweaker? or do I need to mod svl7's vbios? reason I am asking is because its unclear as to whether the stock one is "locked" or not.

also what voltage tables? just P00? or are there other CLK tables i need to change or could adjust as well?

850.0mv-912.5mv is what my stock says on P00, plus there are CLK 0-30 as you know =)

I will be testing the cards separately tomorrow to make sure they are not pooched, with stock vbios, then if if they check out i will work with the vbios further, just need a bit of help with what to adjust.

Thank you so much

J.

 

You can edit the original bios though you might find the clocking behaviour is not as smooth at full loades and may bounce up and down.

P0 is your high performance 3d state, so for games that is what you want to edit.

 

I wouldn't mess with the voltage table, just use Inspector to make a profile and put the shortcut on your desktop. You can modify svl's vbios, I had a few different versions I was playing with to try to get the best performance I could get with the lowest voltage and acceptable heat. The voltage table in KPT is kind of not accurate on the 880M... Open up svl's vbios in one window and a stock one in another to compare and you'll see for yourself.

 

can someone give ma a bios for the gtx 880m then i modify it by myself, i need just a reference.

 

You can extract your own using GPU-Z.

 

Ain't that dumb. I tried to make my own bios but it didn't work, even bricked the then unbricked it. I'm not sure what to change in the power table, first one is tdp, i tried to bumb it with 15% but it didn't work, looks like i have to tweak something else. Can some one help me? the card isn't even reaching 70c while gaming.

POWER TABLE by CakeMaster posted Jul 30, 2015 at 6:15 PM