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NVIDIA GTX 970 OWNERS THREAD
- Thread starter Ayahuasca
- Start date
I'm up to +226 / +520 - Afterburner reports 1554 / 4018 (I think) on the OSD, so memory is actually 8036.
It seems that if I try for +230 on the core the system starts hanging, even with power on 110% and the voltage slider pushed up. +226 seems stable though, several runs through furmark / valley / heaven each followed by a couple of hours of BF4 with no hangs, crashes or artifacts.
It seems that if I try for +230 on the core the system starts hanging, even with power on 110% and the voltage slider pushed up. +226 seems stable though, several runs through furmark / valley / heaven each followed by a couple of hours of BF4 with no hangs, crashes or artifacts.
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No 8Ghz is after the number on the slider is applied (basically 7GHz + 2xslider value)
Soldato
8000 memory is normally +500 on the slider.
Leave the core at stock, whack the slider to +500 on memory and run Heaven. You should see no artefacts at all
If that's the case bingo, your 8000 stable.
I've been told that using a single PCIe power cable to power both the 8 & 6 pin can effect overclocking so i'm going to remove it and try two cables tonight.
Soldato
Dazzerd,
Could you please post up a picture with the block fitted?
Cheers
+1
Want to see if it fits over the metal bracket that covers the rest of the card.
Memory cooling isn't too important to me but keeping the VRMs as cool as possible is.
Will be interesting to know if you need a fan blowing over the VRMs.
Yes I can get +120 core and +500 on the memory on the After Burner sliders. But when I try to increase the core from there it hangs and crashes. Isn't it best practice to get the maximum core clock first then increase the memory?
I initially had the memory at +500 because I saw it in a review, they said the ram chips on these cards are excellent. Then I increased the core to +150 and it's fine but any higher it crashes. So I decreased the memory to +200 thinking this woukd give me more headroom for the core but it doesn't, I still crash with a core of +180 or so.
I have both 8 pin and 6 pin power pins connected too.
Soldato
In a way it depends what your playing as to whether you want more power from the core or memory. A good balance is needed yes but that's only because of the power limit on the cards.
Using afterburner can you see what your power limit is reaching too?
What is it actually boosting too in afterburner too?
Soldato
The ASUS card only has a single 8 pin PCIe connector and this will limit the amount of power the card can draw.
The TDP of the ASUS card is lower than the MSI and Gigabyte.
http://cdn.overclock.net/2/28/900x900px-LL-284c46f7_TDPcompare.png
Asus is 196w, MSI is 220w and the Gigabyte is 280w
If I remember right you have an MSI? As that card has +90 core out of the box by adding +120 in AB you're basically running +210 core over reference, that's a good clock. If you are unable to go higher due to voltage/tdp limits then hopeful when unlocked BIOS emerge you will be able to push it even further.
Soldato
Samsung memory all around.
AMD cards use a variety of memory and some clock better than others. There are some good clocking AMD cards out there but with the 970 it's almost certain you'll be able to get good clocking memory.
I'll set it to +150 core and +500 memory and post results tonight. If I can get this overclock I'll be happy.
Is it safe to leave it at these speeds all the time though?
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The memory on these cards is ridiculous. At lunchtime I tried +600 on the memory and it worked fine, no problems at all. I also tried upping my core to +227, which was fine on valley / 3DMark, although it did seem to introduce some stuttering (even though overall average fps is higher). I wonder if that is the card starting to fall over and just about catching itself before it crashes. A little extra voltage (+20mV) seems to have mitigated this to some extent.
That's around what most get to cjo20, adding voltage only helps add a few more mhz or stabilise the clock.
Thing is it's mostly bench stable, some games will work fine but I've found others that will crash after a while. This could be the overclock or stability issues with the overclock on a new architecture and drivers. Games like Diablo 3 will crash for me with anything over +160 on the core, whereas BF4 will work for hours on +200.
Thing is it's mostly bench stable, some games will work fine but I've found others that will crash after a while. This could be the overclock or stability issues with the overclock on a new architecture and drivers. Games like Diablo 3 will crash for me with anything over +160 on the core, whereas BF4 will work for hours on +200.
I'll have to give Diablo a go tonight. Warcraft seemed to show instability faster than BF4, but that was solid at +226 last night. It should tell me quite quickly whether the +227 is actually usable for gaming or not.