Gtx 670 FTW bios 1.21v

cmdrdredd

Lifer
Dec 12, 2001
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357
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Meh...not worth it. People have already modded their cards via hardware and gotten 1.3v and the performance increase wasn't that much. Not to mention, you will still throttle at 70c. So for the first minute you're 23Mhz faster(as some of those posts mention) and then what...you drop almost to where you were before. Plus I see a bunch of posts where people are talking about crashing while trying to bench with this BIOS. What's the point then?

One guy even said he tried 1293 and crashed, 1280 crashed, and had to go all the way down to around 1240. His stock bios did 1230, so 10Mhz? Yeah I'm gonna flash to an unsupported bios to run higher voltage for a whole 10Mhz lol. My cards are doing 1242 without it.

People are saying "you should get 20 to 50Mhz more" To me that's not worth bothering with. Maybe it's because I have SLI or maybe it's because I'd rather not see my card's VRMs die out and then have a rejected RMA.

50Mhz will not show up in gameplay. You might be able to post a Heaven score a few points higher, but that's about it. Especially when the FTW cards are not using the best cooling. There is something to be said about exhausting the heat out of the case but it's no heatpipe on the GPU that's for sure.
 
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xp0c

Member
Jan 20, 2008
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Having a good chip gets a better OC, and upping volts by one notch is nothing.
Why are people getting so upset that others are doing this?
Mod works great here.
 

cmdrdredd

Lifer
Dec 12, 2001
27,052
357
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Having a good chip gets a better OC, and upping volts by one notch is nothing.
Why are people getting so upset that others are doing this?
Mod works great here.

Who's getting upset? I'm just saying the reward is crap for a card with poor cooling (I own two FTW cards and know they don't have the best cooling) and still throttles at 70c.
 

xp0c

Member
Jan 20, 2008
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Who's getting upset? I'm just saying the reward is crap for a card with poor cooling (I own two FTW cards and know they don't have the best cooling) and still throttles at 70c.

Theres a few people that pop in and out of different threads about the 1.21v mod. You swear they work for nvidia.

In regards to this thread, the info is on enthusiast forums, and people there should no what the risks are, but if they don't people tell them, plus they are warned before flashing.
 
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cmdrdredd

Lifer
Dec 12, 2001
27,052
357
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Oh yeah I ignore that. If this gave more of a boost (no pun intended) I'd try it out. I don't think 50Mhz will give me anything at all for SLI. Maybe a single card gets more rewards from 50Mhz, I never tested my cards both ways so I couldn't say.

I will say that if I had a card that was better in the cooling department like an Asus or MSI I would try something like this to squeeze more because they can stay away from 70c temps a lot more easily than my FTW cards can. That way you can avoid the throttling. That is unless somehow they can get around these limits. My cards were good enough deals that I don't regret not waiting for better cards to release.

Still try as they might to overclock a 670 to the max, a 7950 will still perform better in an overclocked state as a single card solution.
 
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hokies83

Senior member
Oct 3, 2010
837
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in 2-3 months there will be all kinds of.. Why does my gtx 680/670 no longer work threads all over OCN... Seen it before when people were blindly doing this nonsense.
 
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cmdrdredd

Lifer
Dec 12, 2001
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We will see. Let them be guinnea pigs. If it works out then we can try it lol.

I wonder if there will ever be a way to remove the thermal throttle at 70c. I feel 70c is reasonable for temps and that it's too low to be deemed "hot" and require throttling. Maybe 80c though.
 

hokies83

Senior member
Oct 3, 2010
837
2
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I can see 80c..

There is one guy with a Magic Windforce 680 with 1380mhz and 1.21v with 50% fan speed only hits 55c lol...

My gpus at stock volts with full fan speed will throttle past 1350mhz..
Granted 1 fan on 1 gpu does not work and the other is a ref card.. but still.. 55c 50% fan speed?
 

xp0c

Member
Jan 20, 2008
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I just wanted to get over 1300Mhz. My new boost beats my old max OC.
The only game I play is BF3,a nd I probably could run it on my original bios, and out perform the 7950. Had to say it, because kepler owns BF3.

I let my temps get up to 72c, and they didn't throttle. My ambients are close to 30 right now I bet.
 

blackened23

Diamond Member
Jul 26, 2011
8,548
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Theres a few people that pop in and out of different threads about the 1.21v mod. You swear they work for nvidia.

In regards to this thread, the info is on enthusiast forums, and people there should no what the risks are, but if they don't people tell them, plus they are warned before flashing.

There is no "mod" that makes 1.21V work. All reference boards go up to 1.21V but it is not reported by software, software merely reports what the BIOS tells it to - which is the max offset voltage of 1175mV. So seeing people go crazy over this BIOS is pretty hilarious :rolleyes: IMO because 680s have been doing 1.2V for a long time now, people just didn't realize it because nobody tested their cards with multimeters.

I had EVGA ref cards that would do 1.21 at 100% GPU load, ages ago - verified with a multimeter. But because overclocking is retarded with the kepler, people take the misreported voltage by software and think it means something. By the way, all kepler cards throttle at 70C, they will lower in 1 bin increments (13 mhz / 10mV) which you can see if you watch the monitor in precision x or whatever monitoring software you have.
 

cmdrdredd

Lifer
Dec 12, 2001
27,052
357
126
There is no "mod" that makes 1.21V work. All reference boards go up to 1.21V but it is not reported by software, software merely reports what the BIOS tells it to - which is the max offset voltage of 1175mV. So seeing people go crazy over this BIOS is pretty hilarious :rolleyes: IMO because 680s have been doing 1.2V for a long time now, people just didn't realize it because nobody tested their cards with multimeters.

I had EVGA ref cards that would do 1.21 at 100% GPU load, ages ago - verified with a multimeter. But because overclocking is retarded with the kepler, people take the misreported voltage by software and think it means something. By the way, all kepler cards throttle at 70C, they will lower in 1 bin increments (13 mhz / 10mV) which you can see if you watch the monitor in precision x or whatever monitoring software you have.

So.....what's the point of this BIOS then? How are people getting supposed higher clocks?
 

blackened23

Diamond Member
Jul 26, 2011
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So.....what's the point of this BIOS then? How are people getting supposed higher clocks?

Not sure. Different voltage offset settings perhaps. (there are 3 offset voltage settings which affect OC stability) High power %? Placebo? I dunno.

Either way:

1) I think its hilarious
2) IT underscores how retarded nvidia is on this entire overclocking nonsense. Why are we going through all of these hoops to OC?
3) This better not happen with gk110

Kepler throttle, Overpower throttle, all of that nonsense can suck it. Its great for idiots who don't know what they're doing, terrible for people who want max overclocks.
 
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hokies83

Senior member
Oct 3, 2010
837
2
76
Fix to the heat
600x450px-LL-0d61a696_top.jpeg
 

cmdrdredd

Lifer
Dec 12, 2001
27,052
357
126
That would not fit on an sli config with matx board. Slots have spacing issues with that.
 

njdevilsfan87

Platinum Member
Apr 19, 2007
2,341
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there not warning people about the risks involved and saying it is all ok to do this.. which i find absurd..

http://www.overclock.net/t/1289489/gtx-670-ftws-unlocked-voltage

What risks? If you mean the risk of bricking your card through a bad flash, you might still be able to fix that through a blind flash. As far as 1.21v versus 1.175v, I can't see what the risk there would be. Maybe there's a risk in running over 1.3v like a few select models are able to now. I personally think 1.21v is the sweet spot for these cards. For me I get the following

1) 1.175v stock bios = 1272 max stable
2) 1.212v bios = 1318 max stable
3) 1.304v LN2 bios = 1411 max stable

I just need a bios where my clocks automatically boost to 1305 or so now. :D
 

cmdrdredd

Lifer
Dec 12, 2001
27,052
357
126
What risks? If you mean the risk of bricking your card through a bad flash, you might still be able to fix that through a blind flash. As far as 1.21v versus 1.175v, I can't see what the risk there would be. Maybe there's a risk in running over 1.3v like a few select models are able to now. I personally think 1.21v is the sweet spot for these cards. For me I get the following

1) 1.175v stock bios = 1272 max stable
2) 1.212v bios = 1318 max stable
3) 1.304v LN2 bios = 1411 max stable

I just need a bios where my clocks automatically boost to 1305 or so now. :D

The real question is what is your memory clocks d at. That is where the gains are.
 

njdevilsfan87

Platinum Member
Apr 19, 2007
2,341
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6750 is about the most I can go with the core maxed out at the clocks I listed. And I agree, overclocking has memory has a much better gain than core. That is why GK110 should be a real beast even if it's GPU is only about 30% more powerful than GK104, because once you start cranking the AA and AF, that is where GK110 will really shine. I can't wait!
 

Termie

Diamond Member
Aug 17, 2005
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The real question is what is your memory clocks d at. That is where the gains are.

Hey cmdr, do you ever notice that your voltage is actually at 1.162v even under 70C and under the power cap? My 670FTW runs like that, and I'm wondering if that's a glitch (the original 670SC cards, which you had, exhibited similar behavior, as documented in the Anandtech review).

Also, what do you do to test memory clocks? Just getting something to run isn't enough - it also has to show an actual improvement, and I haven't been able to see a noticeable improvement (or a decrease for that matter) above 6400 or so. That's in BF3 singleplayer, but perhaps there's a better test that's more memory-limited.