• Competitor rules

    Please remember that any mention of competitors, hinting at competitors or offering to provide details of competitors will result in an account suspension. The full rules can be found under the 'Terms and Rules' link in the bottom right corner of your screen. Just don't mention competitors in any way, shape or form and you'll be OK.

Evga 680 Overcloking

Watlinguk

Watlinguk

Watlinguk

Associate
Joined
1 Aug 2010
Posts
1,870
I received my second 680 today to pop into SLI.

What ive noticed with both the single GPU and the dual SLI, i cannot overclock them at all!

Im using EVGA precisionX as my program. I've tried very little interments and get the same result. That result is 10 minutes within a game and the computer will shut down and restart.

Now ive looked at the temps whilst playing games on full and they never exceed 75 degrees, generally below 70, granted the fans kick in to about 80% but that's fine.

My main question is why i cannot overclock the GPU's? Could this maybe have something to do with my CPU overheating maybe and closing the system down? I'm a bit confused. Hope someone has had a similar experience. Kind regards
 
Here is a look at whats going on for your digest. This with the machine doing nothing:
333fwol.jpg

Just to confirm my games whilst there running is making the cpu temps to exceed 90 degrees, i know this has turned more towards the cpu in a GPU thread, but im aiming at the GPU, could the CPU be reaching them temps and causing my game frames to dip?
 
Last edited:
If I were you I'd try to establish the limit of the second card first before you start with SLI. This way you'll know how far they can both clock first to rule anything out.

It's possible you have a dogs dinner of a second card in which case by having 'Sync' checked it will apply the first cards settings to the second cards setting or vice-versa and causing one to crash.

You need to up the power target to maximum and then start slowly, in increments of say 10 on the core and 25 on the memory. Normally you'd go faster than this but as it seems like your card is maybe a poor overclocker, best to start slowly :).

Why is your CPU getting so hot by the way? It shouldn't be anywhere near 90c in games ... That's very close to the maximum for that CPU.
 
Hi bud thanks for your reply. Well my first card has always done this, only seems to be in games really demanding such as BF3. I also tried the second card on its own with the same results, which has started me questioning my CPU. I checked the temps etc to find out they are almost exceeding 100 degrees, and are exceeding this in prime95. Im so confused. Do you think this could be causing my games to drop in frames, when they should be with two 680's, and then ultimately crash. Here is my thread dedicated to the cpu question :) : http://forums.overclockers.co.uk/showthread.php?t=18445320
 
In the screenshot in that thread you're exceeding the max for the CPU potentially damaging it if it isn't thottling back. As you're crashing it says to me that something is definitely wrong with it getting that hot.

You need to take off the cooler. Clean the chip, re-apply thermal paste and then re-seat the cooler.
 
Okay bud good advice, its deffo worth a shot if nothing else! In games like World of Warcraft my CPU temps are about 75-85, then games like crysis 2 and battlefield 3 there of the charts!
 
I have to ask, is the fan working?

Has the heatsink come loose from the CPU socket at all? If you can move it at all when it's turned off by wiggling it with your hand I wouldn't turn the PC back on again until it's back on and fastened :D.
 
Fan was working, just removed it and im about to apply more thermal paste, what would you advice, to remove it please? I don't have any rubbing alcohol or anything like that. Regards
 
I have always just used kitchen roll. It takes a firm wipe but make sure you are carefull not to get it every where. I have to say those temps are shocking on your CPU. Are you sure the heatsink was on firmly and the fan was clean of dust? Also, what Heatsink are you using?
 
Watlinguk said:
Fan was working, just removed it and im about to apply more thermal paste, what would you advice, to remove it please? I don't have any rubbing alcohol or anything like that. Regards
Click to expand...

You do need to remove the old stuff properly first.

Ideally, you'll use the proper cleaning stuff but I guess you could use kitchen roll as Gregster says to get the majority of it off.

It won't be ideal though...
 
Okay guys, thanks for your continued support.

Just removed all of the olf gunk using a Q-tip then kitchen roll. I have applied a pea size blob of acrtic silver 7. Am i correct in saying it needs to take time to set in before the temps reduce? As of right now there the same temps as before.

I'm using a Corsair H50 Cooler. It was all seated correctly and all the fans are clear of crap
 
Not really no, if you aren't experiencing different temperatures now it's likely that wont change.

The temps are really high, can you hear the cooler working? What kind of voltage are you running at? What case do you have? 80% fan speed seems quite high also for the gpu?
 
Last edited:
When you reseat the cooler, give it a twist before screwing it into place. This spreads the paste nicely and then fit it into place firmly. Also in your BIOS, make sure the fan has a decent profile or do what I did and set it to full (my Gelid is quiet even on full). I am not sure how you do that with your mobo but consult the manual or maybe somebody has the same mobo as yourself.
 
Hey.

The CPU voltage is set at 1.35 and its running a 4ghz overclock pre settings from OCUK.
I cant really hear the cooler running but i can feel the air blowing out of the case and the vibrations. That been said in my mobo bios, the fan control is set to Turbo and there apparently running at 1450RPM, This cannot be altered to go faster, im guessing as thats its maximum speed.
I have a NZXT Phantom case. Well the GPU'S where running at about 70-80% full load, temps didn't really go that high considering there literally sandwiched together.

Did the twist method you mentioned Gregster :)

Wish someone who is good with all this live close by to Hull haha :P
 
I kind of agree with Defy Belief. Those temps are too high on the CPU and those volts are more than manageable with a good aftermarket cooler like yours. Maybe something wasn't connecting properly and this time, all will be good. Fire it up after you have everything connected and let us know what temps are like on idle please.
 
Okay everything fired and the overclock removed back to its default settings, temps seem more manageable whilst playing games, and when running prime95 they are around 80 degrees opposed to 100. However my frames per second in game are now shocking, am i ultimately faced with a bottleneck now? Removing that overclock has that cause the CPU to be the limiting factor?

Here is a screenshot of the temps in the lower right hand corner, As you can see my GPU temps are all fine, just the CPU oddly :(:
2cpssgl.jpg
 
Sounds absolutely knackered mate if you've re-applied. It sounds like the CPU isn't making contact with the heatsink properly or the fan isn't working properly.

How do you have your heatsink orientated?

Yes without the overclock there will be a bottleneck there. Fairly large as well in MP64.
 
1.35v still seems high for a 4ghz clock but I probably shouldn't comment as i've never looked into clocking a 950. (Just reading some OC'ing threads for them and it does seem rather high) Have you tried less voltage? My money is still on either a seating issue or a defective pump or something.

EDIT just seen pic, 80 degrees is a HOT temperature for a stock cpu, the cooler has had it i'd say if it is contacted good. Do you have a stock cooler? Would probably be worth just chucking that on to try it.
 
Last edited:
Yeah well im hoping its the cooler opposed the cpu :S

I have also tried less voltage im sure i tried it with 1.275, still no joys.

Blow this i have uploaded a picture of the way my cpu cooler is positioned etc, excuse the crap quality :D

I do actually have the i7 stock cooler that it come with many years ago, will this be a good idea to put this one on and remove the corsair? Never used a stock intel cooler, is it likely to run cooler then what its currently showing?

1gkwoo.jpg


14df2m8.jpg
 
Last edited:
Something is seriously not right with that chip. I am in agreeance with Rusty and personally feel the IHS isn't connecting with the chip/paste correctly. If it is still under warranty, I would be returning it. Check with a stock cooler first though, just to make sure it isn't the cooler not working first though.
 
You must log in or register to reply here.
Back
Top Bottom