As the title says I think I need to RMA  one of my 670s. It has been acting up lately. First of all its my second card in my rig. So what has been happening is my voltages for some reason would not stay constant when using K-boost. Normally when I use K-boost my voltages stay at 1.75v no matter what in which this is normal. But it has not been doing that for the past week and has been dropping back in for from 1.75v to 1.62v and 1.46v. Another thing is my card has been artifacting when I have been playing games and benchmarking. To note the benchmarks I used were 3Dmark, Heaven, Valley and Catzilla. The games that I been playing is Crysis 3, Tomb Raider(newest), Primal Carnage, Hawken, Natural Selection, Smite, Ghost Recon, and Assassins Creed 3. So I did all the necessary test such as turning off SLI and running my card alone, using the latest drivers as well as the past 3 drivers before it, turning K-boost on and off, trying all 16x slot lanes on my EVGA z77 FTW board, just using one monitor instead of two, and just flat out turning off EVGA precision. Now I want to be clear that I am not overclocking my cards either and this has been happening. I also tried it in my friends system and its still doing the same thing. He pretty much has the same system as me but with a ASUS maximums V board, 8GB of 1600mhz RAM, and with two 2GB 670 FTW cards. The biggest thing that is weird is that its been crashing when I SLI. I can be playing a game for like 1-3 minutes or be running a graphic intense application and boom crash with a yellow and purple screen. But then after 10 seconds of that zzzzzz sound of the yellow and purple screen my monitor goes into stand by mode. Also after 10-15 minutes on the desk top at idle it crashes with the same side effects. And yes this SLI issue does do it with the latest driver and the past three drivers before it. So I am confused what else to do. Does anyone else have any suggestion. I pretty much done all I can.

Maybe you do need an RMA. You can contact EVGA tech support if you need any futher tech advice.

Why were you running K-Boost? I hear it shortens the lifetime of a card

maniacvvv

Gomez99
Why were you running K-Boost? I hear it shortens the lifetime of a card

That would be correct.
 
On top of that your running 120hz dual monitors.
Since this naturally keeps your core clocks from dropping to lower idle states your cards have been running seriously overclocked.
 
Its unclear if you have the SC or FTW versions...
But it is clear that you do not realize you have been running -constant- clock/voltage overclocks 24/7 in the 200mhz+/0.75v+ range and above.
--->And this has been happening whenever the computer is on.
Thats really really hard on any GPU setup and quite needless unless running benchmarks or applications that benefit from such overclocking.  
 
Given your testing the card is likely failing so a RMA would be in order
When you get the replacement, monitoring stress voltage levels closely would be advised in case PSU degradation has occurred.  
 
 
  

Ya I see what you mean. Also I am sorry that I forgot to clarify this, but I have not been running it at constant voltage with K-boost. I pretty much forced boosted it when ever I ran something intense as well as force idling my cards when at idle. I run my cards on this setup based in this thread: http://forums.evga.com/tm.aspx?m=1770296 .

By the way I know its taking me forever to get this RMA going because I have not been home lately and on the road. But I plan on testing the card in one more rig. Specs is this http://pcpartpicker.com/p/34rLw

XrayMan

HAZMAN_THE_GREATBy the way I know its taking me forever to get this RMA going because I have not been home lately and on the road. But I plan on testing the card in one more rig. Specs is this http://pcpartpicker.com/p/34rLw

Hope it works. If not, Evga will assist you in that RMA.       

But but before the NSA installs transponders in the rma replacement.. Good luck hope it gets fixed...