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2 MSI GTX 670 Power Edition cards with different voltages and clocks

Tags:
  • Identical
  • Different
  • Voltage
  • Power Edition
  • Boost Speeds
  • SLI
  • MSI
  • Graphics
  • GTX 670
Last response: in Graphics & Displays
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August 11, 2014 1:25:44 AM

I've had one card for over a year from Newegg, and then recently found an identical one on Ebay for pretty cheap, so I bought it and decided to SLI them. The card from Ebay turns out to be superior and by default boosts to 1188 on the core, as well as less voltage in non 3D states. I'm using this as GPU1. My Newegg card boosts to 1175 and it is set as GPU2. Right now just with a browser open, they are both at 1019MHZ but GPU1 is using 1037mV, GPU2 is using 1050mV...both are at 43C.

Previously I copied the bios from GPU1 and flashed GPU2 with it, and now they both show the same bios version, but they are not following the same voltage and clock regiment. I tried Afterburner and unchecked synchronization...selected GPU2 and clocked it up +13 and it worked, but this will not work when I want to overclock the memory on both cards, and it didn't correct the low power states matching up either. Both cards hit max volts of 1.175 when boosting. One has Hynix DDR5 and the other has Elpida DDR5 if that means anything.

Is it possible to make them identical on every power level through a bios hack or other means? Am I being too anal about it? I cant understand why GPU2 wont just play nice and match the primary card. It doesn't need extra voltage to achieve the +13 on the core, and it's the same temp as the other card using slightly more voltage on the lower power states. I can't figure out why GPU2 is being so difficult. Does anybody have an idea?

More about : msi gtx 670 power edition cards voltages clocks

August 11, 2014 1:31:12 AM

If they are both working then you shouldn't be too worried,
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August 11, 2014 5:41:17 PM

Im not completely stressed about it, but I would like to see if there is a possible solution. I'm investigating the various bios modding tools available, like KGB and others. I'm also fighting a whea-logging error 19 that is unrelated to the cards, so I've got my plate full it seems.
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August 12, 2014 1:52:53 AM

sylas said:
Im not completely stressed about it, but I would like to see if there is a possible solution. I'm investigating the various bios modding tools available, like KGB and others. I'm also fighting a whea-logging error 19 that is unrelated to the cards, so I've got my plate full it seems.


Well not all chipsets are the same, so some might need more power than others, i think that is fairly common
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August 12, 2014 8:14:28 AM

I have discovered how right you really are. Even with a bios mod that essentially sets all new clocks and voltages for all power states, did not change the fact that when both cards are running at 1019MHZ, GPU2 still requires .013v more than GPU1. But on the upside, I was able to get both cards successfully boosted past the 1200MHZ mark.
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August 12, 2014 8:16:00 AM

Yeah the difference between the voltages aren't that noticeable and that's a pretty good clock speed, you may have some great ocing chips in your oc :D 
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August 12, 2014 8:17:17 AM

Didnt MSI do some shady stuff overvolting cards at one point? Maybe your first card was one of them. Ill try and find the article.
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August 12, 2014 8:21:49 AM

Ah yes but the OP doesn't have the 660 or the 670 ti, just the 670.:) 
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August 12, 2014 8:26:52 AM

legend001523 said:
Ah yes but the OP doesn't have the 660 or the 670 ti, just the 670.:) 


Read the article, its about the 660 ti and 670 power edition (his card). There is no such thing as a 670 Ti, so dont know what you are talking about there :) 

The article does say 670 ti in the first paragraph, but thats a typo, the 670 ti doesn't exist.
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August 12, 2014 8:30:07 AM

My bad didn't read it all
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August 12, 2014 2:58:07 PM

When I first heard of MSI doing that, my first thought was "isn't this a bitch" I had bad luck with my previous card too. An MSI GTX 560Ti, that had a weird fan noise problem, in which I screwed up and accidentally touched the fan while it was spinning and broke one of the blades off. Had to sell that one for $100 on Craiglist before the card got too outdated. So yeah, thanks for bringing that up because I kind of forgot about it. I'm wondering if MSI would do some kind of warranty exchange on it. Some people are claiming that this is a benefit. I personally have not seen any benefits because the second card I got is faster using less power. hmmm... I think I'm going to email those bastards..Thanks for sending the link!
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August 13, 2014 12:16:07 AM

sylas said:
When I first heard of MSI doing that, my first thought was "isn't this a bitch" I had bad luck with my previous card too. An MSI GTX 560Ti, that had a weird fan noise problem, in which I screwed up and accidentally touched the fan while it was spinning and broke one of the blades off. Had to sell that one for $100 on Craiglist before the card got too outdated. So yeah, thanks for bringing that up because I kind of forgot about it. I'm wondering if MSI would do some kind of warranty exchange on it. Some people are claiming that this is a benefit. I personally have not seen any benefits because the second card I got is faster using less power. hmmm... I think I'm going to email those bastards..Thanks for sending the link!



I wouldn't worry about it, the tiny bit of extra voltage will just allow a little more performance, shouldn't damage anything.


The 670 PE are great cards, in SLI they are still very high performance.

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