All posted

@ diynoob:  That's what my chip does too, so I would say, yes, it is default behavior.  I guess going above 27x does the same a turbo mode.  Turbo gives you what?  266mhz.  That would be 2x mulitplier (2x133).  So stock of 25 +3 =28 is beyond that, so you've got your own turbo going on!

I have no idea what I'm talking about BTW, so this is speculation of course.

RTFM dude.

Jk. 

There are PCIE disable jumpers underneath the main ATX power connection to your mobo.  That should disable the slot entirely.  When I was doing individual card testing I just disconnected the power though, since I knew the card was dead in the water when it's even just missing the 6 pin power connector.  Figured it was really dead without either ;-)

So both cards now have proper temps now that you're back in serial?  That's the reason I ran serial for so long; fear of unknown gotchas that would affect flow and ultimately starve one card.  Serial is a known quantity, always.  I only started running parallel around a week ago after people made a bunch of hoopla about parallel but again, I barely noticed a difference (though it was indeed there). 

'Bout to start testing 4.66GHz on my 980...

diynoob

RTFM dude.

Jk. 

There are PCIE disable jumpers underneath the main ATX power connection to your mobo.  That should disable the slot entirely.  When I was doing individual card testing I just disconnected the power though, since I knew the card was dead in the water when it's even just missing the 6 pin power connector.  Figured it was really dead without either ;-)

So both cards now have proper temps now that you're back in serial?  That's the reason I ran serial for so long; fear of unknown gotchas that would affect flow and ultimately starve one card.  Serial is a known quantity, always.  I only started running parallel around a week ago after people made a bunch of hoopla about parallel but again, I barely noticed a difference (though it was indeed there). 

'Bout to start testing 4.66GHz on my 980...

Um no, both cards do not have proper temps. The 2nd card is still running much hotter. Serial did not help at all with the temps at all. Running Vantage with the cards at stock clocks resulted in the 2nd card being 21°C hotter. That's the exact same result as running parallel.

Parallel temps stock clocks.



Serial temps stock clocks.

I agree Q56, I think maybe 5°C hotter would be the norm under load. I just ran Vantage with the card at stock clock and the 1st card disabled and power unplugged, the card still ran at 61°C. There is something wrong with this card.

him having a bad card is not good news at all. he bought that card from a forum member.

kram, you need to pull the card out and check that all the screws are tight. then put that card in the top slot and the other in the bottom. see if you still get a 10 degree difference.

i think on my 295's i was getting 5 to 10 degree difference at times, but after redoing them..it was more like 2 to 5 after.

diynoob

Sorry kram, I thought you were being sarcastic... wasn't sure how to read that.  That stinks that the problem persists but now you know for sure that the card runs hotter and may be bad.

My temps were always within 1-2C on the last pair I ran and then started to run hotter (~5C hotter) for no reason.  I received an RMA for my 3rd card last Saturday and swapped it in and now they are back to running within 1C of each other under load and at idle.


*message edited for clarity*

Yeah I went back and read what I posted. It did sound like that fixed the issue, but I meant the cards where running identical temps in serial as they were in parallel.

There is something wrong with this card for sure. Can figure why the person sold it. Now to see if he will honor the other part of the deal. Matter of fact the card was listed on as new, it had definitely been used and had something that looked like caramel smeared over some of the fins next to the power plugs that I had to clean off. He also did not include all the stuff that comes with the card new, such as both 8-pin and 6-pin adapters, dvi to vga adapter, instruction booklet and cd and the 1/2 barbs. He also sent the card out 3 days after when it should have been sent out. My first purchase off the forums here and a $550 one at that.

My bad! Placed the my 470 score here. My apologies.

Here's a mediocre single GPU run with a mediocre 980x overclock...  taking my time tinkering with it.

diynoob --------------------- i7 980x@ 4.4ghz -------- (1) 480FTW 1800/2100 ---- 23286 --- 89457 --- P28569      Water

http://service.futuremark.com/compare?3dmv=2271668

I noticed my GPUs overclocked individually much easier than they did in SLI... or maybe they overclock in SLI just fine, but something else about SLI causes crashes in New Calico.  Maybe something to do with the northbridge or PCIE?  I set my volts to the first green entry for IOH, IOH/ICH, and ICH. 

Thanks bud.  This whole benching & tuning thing has become crazy fun -- I think I spend more time tweaking for benches now than playing actual games.  Reminds me of my racing days where my street cars spent more time on the lift than they did on the road

30k single GPU or bust!

BTW what's the tech explanation for why SLI is harder to overclock?  Does it have to do with additional load on the cards (staying in sync?) or something to do with the additional throughput required from the PCIe lanes?  Just curious.

Scores posted

diynoob

BTW what's the tech explanation for why SLI is harder to overclock?  Does it have to do with additional load on the cards (staying in sync?) or something to do with the additional throughput required from the PCIe lanes?  Just curious.

Well, you'll always have strong and weaker card(s), so for them to play nice together, the stronger one gets compromised.  You could try to unsync each card, but I never had any success with that....good theory, bad practice, for me anyway.

Yea, benching is fun and takes on a life of it's own.  I started my computer fascination by playing UT/UT2003, create maps, play-on line with 56k modem, lol!  I don't play any games now.....benching is much more interesting to me and gets the adrenaline going more so than a game.  It can take over your life like any other addiction, lol....so watch out bro, YOU'RE HOOKED!

kram36

I ordered a DD block this morning. I'll probably toss it on this high temp card and see what happens. Hopefully it fixes this issue. Nice installation guide for the DD block you posted, should come in handy.

Nice.  They are expensive, but I like them for sub zero because they have a simple foot print and are all metal.  Just get your self the right screw driver!!

Q56_Monster
Well, you'll always have strong and weaker card(s), so for them to play nice together, the stronger one gets compromised.  You could try to unsync each card, but I never had any success with that....good theory, bad practice, for me anyway.

What I'm seeing is cards that really don't want to play above 850mhz in SLI but will play at 900mhz individually...  maybe it's not as much a SLI thing as it is a motherboard voltage thing?  Whatcha think?

And geez, another strong 33K single card run.  Nicely done sir.

diynoob

Q56_Monster
Well, you'll always have strong and weaker card(s), so for them to play nice together, the stronger one gets compromised.  You could try to unsync each card, but I never had any success with that....good theory, bad practice, for me anyway.

What I'm seeing is cards that really don't want to play above 850mhz in SLI but will play at 900mhz individually...  maybe it's not as much a SLI thing as it is a motherboard voltage thing?  Whatcha think?

And geez, another strong 33K single card run.  Nicely done sir.

No, doesn't have anything to do with those voltages (ioh, ich, ich, ppl, etc).  We beat the X58 chipset last year with all kinds of voltage combinations and it never enabled sli clocks to equal single cards.  Now, what you could do is up the pci-e.  Try 105 to start and then go higher up to 120 or so and see how that helps your clocks.  That won't bring sli into line with single card, but it will help you increase your clocks on both sli and single card.

I keep my pci-e at 100 in BIOS and change it with eleet.  That way I don't have any problems booting or with internet.  With pci-e too high, sometimes you'll hang at 86 on boot and your ethernet will definitely be gone.