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~~The GTX 670 Overclocking Master-Guide~~ - Page 299

post #2981 of 3357
In precx, I never saw the voltage slider have any affect on the voltage. Does that control in AB actually do something? What is the core voltage under max load? Mine tops out at 1.175v and that's with the voltage slider at its defaults (and a stock evga ftw bios).

Afaik, running with the power target pushed up is fine so long as heat is under control and you've got the headroom on your psu (which it looks like you do).

> I haven't ever had a card before that overclocked far past the next tier up (680)

Yup, the 670 was definitely the way to go in the 600 series lineup smile.gif
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post #2982 of 3357
Quote:
Originally Posted by Rushnerd View Post

Hey all, Just picked up an MSI 670 refurb for $220 (after the giga670 I bought new when it came out last year I had to sell) and was excited to use this guide to OC things.

Not sure if anyone else ran into this, like I strongly suspected, the Heaven3.0 bench did not tax my card nearly enough and let me OC the memory clock way too high! Once I got in crysis3 it artifacted in a minute. Anyway here are my now stable settings dialed down from being stable in Crysis 3.

I just had some questions because i've been on my GTX280 the last five years:

1.Is it ok to leave core voltage@+100 and Power Limit@+114 all the time? Heaven couldn't get it past 98% power consumption, and Crysis3 doesn't seem to go past 106%

2.What exactly is the "triple overvoltage" feature on my MSI card and is it a feature I can activate?

Thanks in advance, I haven't ever had a card before that overclocked far past the next tier up (680). I think it's astonishing it now has the same amount of bandwidth as a stock 770!

With the 670 Power Edition, you can use an older version of AB for full voltage control, or at least more voltage control than normal 670 / 680 cards.  I think the version you want is 2.3.1, although it may still work with the newer 3.0 betas, I'm not sure.  I'm pretty sure with the 670 Power Edition you can run up to 1.3V (it may be slightly lower), vs our regular 670s that can only do a max of 1.212V.  

 

When you put the voltage at +100mV in AB, what are you seeing for GPU voltage, or VDDC?  You could check in AB if you enable voltage monitoring, or in GPU-Z on the sensors tab.  Check it when you have a benchmark like Valley, or Heaven running to make sure it's at the 3D volts.

 

It's perfectly fine to run full power limit, I have been on all my various Kepler cards whenever I want to game.  You can typically see more steady core clock speeds, less bouncing up / down on the core clock speed while gaming with the power limit % maxed out.

post #2983 of 3357
Thanks for the replies, I do have version 2.3.1 already and I just noticed a little drop box on the voltage slider for MEMORY voltage and AUX voltage. No idea what those do, I would just assume higher memory voltage if it's safe would make a higher mem overclock stable??
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post #2984 of 3357
Quote:
Originally Posted by Rushnerd View Post

Thanks for the replies, I do have version 2.3.1 already and I just noticed a little drop box on the voltage slider for MEMORY voltage and AUX voltage. No idea what those do, I would just assume higher memory voltage if it's safe would make a higher mem overclock stable??

The ability to turn up CORE + MEM + AUX voltage is probably that "triple overvoltage" feature you were wondering about smile.gif I wish my ftw card had that as a feature, having to flash a bios to adjust the voltage is just not right.
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post #2985 of 3357
Quote:
Originally Posted by michael-ocn View Post

The ability to turn up CORE + MEM + AUX voltage is probably that "triple overvoltage" feature you were wondering about smile.gif I wish my ftw card had that as a feature, having to flash a bios to adjust the voltage is just not right.
Oh I didn't even think of that, you must be right! I turned them both up just because it seems safe Mem is +50mv and aux is +30 so I don't see why not to do it."

I am wondering however if it is worth it to use 3rd party stuff or flash my BIOS to upvolt it though. Would getting it closer to 2.0V make for a more stable OC?
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post #2986 of 3357
Woah, easy there. 1.3v is a lot for a 670, anywhere near 2v would fry any modern GPU.

What's your max voltage now? My 670 runs at 1241/7750 at 1.212v. It runs plenty hot, I wouldn't put it any higher if I could.

You can overvolt, just make sure the card stays below 70c or you'll throttle.

Also, please talk in terms of absolute clocks, offset means nothing for Kepler based cards.

As to your question, increasing voltage can help with stability but adds heat. The only time you should add voltage is if your oc is not stable and you have the headroom. You should run the lowest possible voltage necessary to keep stable.
Edited by chiknnwatrmln - 11/17/13 at 10:27pm
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post #2987 of 3357
Quote:
Originally Posted by Rushnerd View Post

... I don't see why not to do it..."

Chips degrade over time... if you abuse your hardware, it will not last as long... two things that speed that process are heat and voltage... lower is better on both of those.

> My 670 runs at 1241/7750

Whoa... nice mem clock! My 670s mem gets real squirrelly at ~7000 but it can run 1306 on core at 1.175v... but for everyday, i run 1267/6840.
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post #2988 of 3357
Quote:
Originally Posted by michael-ocn View Post

Chips degrade over time... if you abuse your hardware, it will not last as long... two things that speed that process are heat and voltage... lower is better on both of those.

> My 670 runs at 1241/7750

Whoa... nice mem clock! My 670s mem gets real squirrelly at ~7000 but it can run 1306 on core at 1.175v... but for everyday, i run 1267/6840.
Yeah it strangely capped at 6750 before I upped the voltage. I run it at 7k for gaming, around 6k for everything else.

This card is going though, I'm making room for my 290.
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post #2989 of 3357
I realize they don't scale well, but are there other advantages to tri-SLI GTX670's? I have two way SLI now, very happy, but figured why not... Opinions?
     
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post #2990 of 3357
Quote:
Originally Posted by battleaxe View Post

I realize they don't scale well, but are there other advantages to tri-SLI GTX670's? I have two way SLI now, very happy, but figured why not... Opinions?
If you're running extreme res's then the 2gb VRAM will act as a bottleneck. If you have the 4gb cards then you're all set.

Honestly I wouldn't bother with tri 670's, dual 670's has plenty of power until you get new card(s).

Also, just thought of this. You have a 2700k, which supports 16 lanes of PCI-e 2.0.

Not only will the three cards not scale well, but you'd run into either (depending on how oc'ed your CPU is) CPU or bandwidth bottlenecking.
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