1080 Overclocks?

[WebPlayz]

Hey! So I just got a GTX 1080 Founders edition. I wanted to know what some overclocks I should try to achieve. Thanks 

[WereCat]

+150MHz core

+400MHz on VRAM

 

that should be easily doable, then fine tune and try to get more from it in small increments, focus on core first.

[WebPlayz]

Just now, WereCat said:

+150MHz core

+400MHz on VRAM

 

that should be easily doable, then fine tune and try to get more from it in small increments, focus on core first.

Alright And does pascal take advantage of any VCore Voltage added? ( Coming from a 960 haha ) 

[WereCat]

Just now, Killstreak said:

Alright And does pascal take advantage of any VCore Voltage added? ( Coming from a 960 haha ) 

Yes, buuuut...

Dont touch voltage at all first.

Make sure to get as much out of the card as possible at stock voltage, the cooler you can keep the card the better.

Adding voltage will increase heat and that will make the card actually clock lower. If you can keep it cool THEN you can increase voltage.

[WebPlayz]

Just now, WereCat said:

Yes, buuuut...

Dont touch voltage at all first.

Make sure to get as much out of the card as possible at stock voltage, the cooler you can keep the card the better.

Adding voltage will increase heat and that will make the card actually clock lower. If you can keep it cool THEN you can increase voltage.

Lmao Yeah It just got to 82C haha

[Max_Settings]

11 minutes ago, Killstreak said:

Lmao Yeah It just got to 82C haha

Yeah founders edition you need about a 90% fan speed to keep the temps stable while overclocked.

[xg32]

23 minutes ago, Killstreak said:

Alright And does pascal take advantage of any VCore Voltage added? ( Coming from a 960 haha ) 

the actual fps gains are pretty bad just like the 900 series

[Darkseth]

Like for every other chip: More Voltage = more core clock.

 

But there is a problem. It increases heat a LOT, and the 1080 Founders cooler isn't even able to keep the 1080 cool at stock settings --> you need to set the Fan higher, so the card stays cooler.

Cooling performance is bad --> Card hits 83°C Temperature Limit --> Card clocks DOWN, because the heat is too much.

 

What you should do, is not a plain simple stupid overclock like above, but combine it with UNDERVOLT.

Bringt the head DOWN, so the Card is allowed to boost higher.

 

 

Example: https://www.forum-3dcenter.org/vbulletin/showthread.php?t=574892

Yes, it's a german forum, but you can see the settings there. 

You can see, stock 1080 founders overheats, and throttles to 1608 Mhz - while staying at the stock 1.05 Volt. That's why there is too much heat, and throttling

 

If you go down to even 0.800 Volt (which is the lowest you can go with Afterburner Curve Editor), you should achieve like 1750-1820 Mhz. My 1080 chip does 1823 Mhz with 0.800 Volt (and +500 on Memory). Heat is GREATLY reduced (power consumption drops to like 130-140w max).

This reduced heat allows your card to boost higher than at stock. Less heat, less power consumption, less noise, more performance. Just because you reduced voltage

 

That link gives you this Users settings, that he found stable at his particular model.

Try those out

For a founders, i guess, 0.900 Volt with 1936-2000 Mhz might be possible.

0.850 Volt with 1875-1900 Mhz maybe. Try out what works for your Chip.

 

So my advice: TOUCH THE VOLTAGE!! But don't increase it. Decrease it.  Higher performance + lower noise/heat. win win ;-)

[WebPlayz]

Just now, Darkseth said:

Like for every other chip: More Voltage = more core clock.

 

But there is a problem. It increases heat a LOT, and the 1080 Founders cooler isn't even able to keep the 1080 cool at stock settings --> you need to set the Fan higher, so the card stays cooler.

Cooling performance is bad --> Card hits 83°C Temperature Limit --> Card clocks DOWN, because the heat is too much.

 

What you should do, is not a plain simple stupid overclock like above, but combine it with UNDERVOLT.

Bringt the head DOWN, so the Card is allowed to boost higher.

 

 

Example: https://www.forum-3dcenter.org/vbulletin/showthread.php?t=574892

Yes, it's a german forum, but you can see the settings there. 

You can see, stock 1080 founders overheats, and throttles to 1608 Mhz - while staying at the stock 1.05 Volt. That's why there is too much heat, and throttling

 

If you go down to even 0.800 Volt (which is the lowest you can go with Afterburner Curve Editor), you should achieve like 1750-1820 Mhz. My 1080 chip does 1823 Mhz with 0.800 Volt (and +500 on Memory). Heat is GREATLY reduced (power consumption drops to like 130-140w max).

This reduced heat allows your card to boost higher than at stock. Less heat, less power consumption, less noise, more performance. Just because you reduced voltage

 

That link gives you this Users settings, that he found stable at his particular model.

Try those out

For a founders, i guess, 0.900 Volt with 1936-2000 Mhz might be possible.

0.850 Volt with 1875-1900 Mhz maybe. Try out what works for your Chip.

 

So my advice: TOUCH THE VOLTAGE!! But don't increase it. Decrease it.  Higher performance + lower noise/heat. win win ;-)

Alright What app do I use to under volt?

[Darkseth]

MSI Afterburner.

You can enter the Curve Editor with CTRL + F (or a small button in the menu).

 

There, you have to chose a voltage you want to stay at. Hold this Dot + Shift (so you draw the whole curve up), and draw the dot up to the core clock you want.

Every other Dot right from it (with a higher voltage) you pull manually DOWN below the last dot.

This way, there are no "higher dots" after your desired voltage, and your Chip will always stay there under Load.

 

Example, you want to try 1950 Mhz at 0.900 Volt, you do this:

 

1. search for the 0.900 Volt dot. Hold Shift + draw this Dot to 1950 Mhz up (thanks to Shift, the whole curve will go up, like an offset. This is important, you do not want big jumps in the curve).

This is equal to using offset. You can simply use a +150 or +200 Mhz offset, whatever you want. try it out for your founders, and enter CTRL + F afterwards)

 

2. To prevent the Chip going to any higher voltage than 0.900 Volt, you need to pull every Dot higher than that below 1950 Mhz. When you press apply, those will jump all into a horizontal line.

With this, 0.900 Volt + 1950 Mhz will be the highest Core Clock in the curve (there are higher voltages, but not higher core clocks. Thus, the Card will not reach them).

 

3. Test with Firestrike runs, or games like Witcher 3 in high resolution / settings, if this setting is stable. Save it as a Profile. If it's not stable, repeat the whole thing. Reset everything, search the 0.900 dot again, and draw it up to... 1936. or 1920. something lower). When it's stable, and never crashes, you have successfully applied a 0.900 volt undervolt setting.

 

 

I personally did several profiles. My first is a 0.800 Volt (the lowest, which is basicly a horizontal line across the board) at 1823 Mhz.

Another one with 0.850 Volt and 1897 Mhz~, and 0.900 Volt with 1976 Mhz. Those are the settings, i found stable for MY Chip.

I use +500 Mhz Memory OC for all of them, because that increases performance alot too.

 

Edit: This is how it will look: https://www.forum-3dcenter.org/vbulletin/showthread.php?p=11113697#post11113697

The first image is WRONG (a big Jump in the curve. They found out, this gives a performance drop. Don't ask why, noone knows  Boost 3.0 seems to be a mystery..)

The second one is correct. As you see, the highest core clock is at 1.000 volt, and the Core Clock is slightly over 2 Ghz.

 

This card will run at 1.000 Volt and 2011~ Mhz or something like that.

 

 

Don't forget: The higher the temperature is, the lower the Boost steps become. Don't be surprised if you don't hit exactly the number you set up. or if it goes down by 12,5 Mhz after it heats up.

[WereCat]

53 minutes ago, Killstreak said:

Lmao Yeah It just got to 82C haha

You want to keep it at around 65*C max otherwise the clocks will suffer a lot.

I would recommend you to play around with the Voltage curve and try to get as much clocks as possible at 1.000V 

[WebPlayz]

Just now, WereCat said:

You want to keep it at around 65*C max otherwise the clocks will suffer a lot.

I would recommend you to play around with the Voltage curve and try to get as much clocks as possible at 1.000V 

I got it too +350 Core +800 Memory 95% Power target 92C Temp target And It hits 67C Max At 30% Fan speed

[xg32]

1 minute ago, Killstreak said:

I got it too +350 Core +800 Memory 95% Power target 92C Temp target And It hits 67C Max At 30% Fan speed

if you are comfortable with the 92C temp target that looks great

[WebPlayz]

13 minutes ago, xg32 said:

if you are comfortable with the 92C temp target that looks great

Yeah. I get above 150 FPS In every game. I love it, Haha

[xg32]

Just now, Killstreak said:

Yeah. I get above 150 FPS In every game. I love it, Haha

nice, maybe 92C isn't that bad, i had a 480 at one point, those were the days LOL.

[Mick Naughty]

What is it running at now? an oc may not even be worth it.

[WebPlayz]

Just now, Mick Naughty said:

What is it running at now? an oc may not even be worth it.

What Do you mean?

[Mick Naughty]

1 minute ago, Killstreak said:

What Do you mean?

What does the card boost too in games or benchmarks?

[WebPlayz]

Just now, Mick Naughty said:

What does the card boost too in games or benchmarks?

2200 MHZ Usually. Core and 8.7GHZ On memory

[Mick Naughty]

1 minute ago, Killstreak said:

2200 MHZ Usually. Core and 8.7GHZ On memory

Well if its hitting 2200 already I wouldn't bother oc'ing it. 

[WebPlayz]

8 minutes ago, Mick Naughty said:

Well if its hitting 2200 already I wouldn't bother oc'ing it. 

Because I oced it. It was hitting 1800MHZ Before.

[Mick Naughty]

45 minutes ago, Killstreak said:

Because I oced it. It was hitting 1800MHZ Before.

Seems plenty then. Higher then both of mine.