1080 TI overclock results?

[jimmyjimmies]

Hello,  

 

I haven't seen a post about this and I'm curious where I should be expecting to land with overclocking results on the 1080ti strix (if I ever get it)

 

So anyone who has overclocked their 1080 TI, what kind of results have you seen?

+mhz core clock?

+mhz memory?

I'll assume it's still best to use max power limit.

Any suggestions on  whether or not to touch core voltage? I've seen a lot of varying opinions on this and would like to see more.

 

Please mention your gpu and cooling setup with results. Thanks!

[DoctorZeus]

 on my founders edition i can hit 1970ish stable with the fan high at like 80 something. the SO sleeps with a fat fan on high so the puny graphics card noise doesnt register. 

 

memory at like 5750 stable. havent really played with it. 

 

with this in mind id say you should hit 2k core and 5800 no sweat

[jimmyjimmies]

 

6 minutes ago, DoctorZeus said:

 on my founders edition i can hit 1970ish stable with the fan high at like 80 something. the SO sleeps with a fat fan on high so the puny graphics card noise doesnt register. 

 

memory at like 5750 stable. havent really played with it. 

 

with this in mind id say you should hit 2k core and 5800 no sweat

okay thanks for the input, nice to have a place to start when i begin testing it

[3 Lions]

1 hour ago, jimmyjimmies said:

Hello,  

 

I haven't seen a post about this and I'm curious where I should be expecting to land with overclocking results on the 1080ti strix (if I ever get it)

 

So anyone who has overclocked their 1080 TI, what kind of results have you seen?

+mhz core clock?

+mhz memory?

I'll assume it's still best to use max power limit.

Any suggestions on  whether or not to touch core voltage? I've seen a lot of varying opinions on this and would like to see more.

 

Please mention your gpu and cooling setup with results. Thanks!

All GPU'S overclock differently so we don't have any recommended overclocks set in stone. 

 

Watch this: 

 

 

[Frankenburger]

On both of my FE 1080 Ti, I'm able to push them both to +160MHz core, and while I haven't tested the max memory OC, I have settled on +300MHz mem. With the +160MHz core, the first card settles slightly above 2GHz, while the second card settles slightly below 2GHz (currently at work, I can post specifics later if you want).

[kreechrr]

on my FE, I have +150 on Core, +500 on memory and That was stable but also my first try so I might push farther if enough people see higher OC's

[Hunter-97-G]

Haven't overclocked it yet as all games I've tested exceed 60fps at 4K.

[ActuallyGoose]

19 hours ago, Hunter-97-G said:

Haven't overclocked it yet as all games I've tested exceed 60fps at 4K.

Is that completely maxed, or are you turning down settings for a constant 60 fps? 
Cause on Wildlands and Watch dogs 2 etc. I'm sipping down to mid 40's a lot. That's with everything maxed minus the msaa

[ActuallyGoose]

Also I'm currently sitting safe at +155 Mhz Core and +500Mhz Mem On a MSI Stock FE. Also I'm getting a consistent temp of 75 at 80% fan sleep

[SHADY16]

i have to keep mine at 80% fan just to keep it under 80c at stock clock, though best mine could get was 135 core 350 mem and had to keep fan at 100% and even then it would top out around 81c

[Frankenburger]

9 hours ago, SHADY16 said:

i have to keep mine at 80% fan just to keep it under 80c at stock clock, though best mine could get was 135 core 350 mem and had to keep fan at 100% and even then it would top out around 81c

Whoa, that sounds odd to me. With both of my cards at +160MHz core and a custom fan curve, the top card reaches 79c and the bottom card around 76c or so. I don't recall the exact fan speed (currently at work), but it certainly wasn't at 100%. What kind of air flow does your tower have?

[SHADY16]

2 hours ago, Frankenburger said:

Whoa, that sounds odd to me. With both of my cards at +160MHz core and a custom fan curve, the top card reaches 79c and the bottom card around 76c or so. I don't recall the exact fan speed (currently at work), but it certainly wasn't at 100%. What kind of air flow does your tower have?

3 intake corsair af 120s 2 exhaust 1 corsair mlpro 140mm and other is a 120mm radiator for my cpu in a corsair 200r case. it's probably my case tbh i came from a evga 1080 ACX sc and it ran at 75c with about 80-90% fan speed

[Frankenburger]

Yeah, that sounds warm even for an ACX.

 

A few weeks back I stepped up from 2x 1080 ACX, and while the top card was choked, the bottom card was sitting around the 68-70c range in FurMark.

 

For reference, I'm using a 750D. The tower has some build quality issues, but great airflow. The two front 120mm fans are set to intake while the back is set to exhaust.

 

[SHADY16]

12 minutes ago, Frankenburger said:

Yeah, that sounds warm even for an ACX.

 

A few weeks back I stepped up from 2x 1080 ACX, and while the top card was choked, the bottom card was sitting around the 68-70c range in FurMark.

 

For reference, I'm using a 750D. The tower has some build quality issues, but great airflow. The two front 120mm fans are set to intake while the back is set to exhaust.

 

i was thinking about buying a video card slot cooler to see if that would help as at this point i cant add any more fans, either that or installing a EVGA hybrid kit but im unsure if i can on a MSI FE 1080 Ti or if it's a good idea to have all my exhaust be radiators

[Frankenburger]

11 minutes ago, SHADY16 said:

i was thinking about buying a video card slot cooler to see if that would help as at this point i cant add any more fans, either that or installing a EVGA hybrid kit but im unsure if i can on a MSI FE 1080 Ti or if it's a good idea to have all my exhaust be radiators

I don't see your rads being your only exhaust as much of an issue as long as the fan speeds are high enough.

 

Regardless, do you have any spare chassis fans laying around? What I did to combat the choke on my top 1080 ACX was plug in a chassis fan and strap it to the side of the card to provide more airflow. It's one of those instances where I wish the 750D had a side fan mount, but it worked fairly well by dropping it from 83-84c down to 78c in FurMark.

[SHADY16]

1 minute ago, Frankenburger said:

I don't see why having your rads be your only exhaust as long as the fan speed is high enough.

 

Regardless, do you have any spare chassis fans laying around? What I did to combat the choke on my top 1080 ACX was plug in a chassis fan and strap it to the side of the card to provide more airflow. It's one of those instances where I wish the 750D had a side fan mount, but it worked fairly well by dropping it from 83-84c down to 78c in FurMark.

i have a extra corsair af120 but i wouldnt know where to strap it lol 

[Frankenburger]

4 minutes ago, SHADY16 said:

i have a extra corsair af120 but i wouldnt know where to strap it lol 

I strapped mine on the side of the card right next to the intake fans, resting up against the 8pin connector. I found the best spot by simply ramping the fan speed and moving it around by hand until I found the best spot. Then I just took some string and tied it in there. It was kind of ghetto, but hey, whatever works.

[SHADY16]

2 minutes ago, Frankenburger said:

I strapped mine on the side of the card right next to the intake fans, resting up against the 8pin connector. I found the best spot by simply ramping the fan speed and moving it around by hand until I found the best spot.

what did you use to strap it? zip ties?

[Frankenburger]

Just now, SHADY16 said:

what did you use to strap it? zip ties?

Just some string. I cut enough length to hang it from the top grill of the tower where the rad goes.

 

(Shoulda mentioned it from the get go. Running on 3 hours of sleep here. Sorry 'bout that.)

[Frankenburger]

I did some more testing with the OC on these two cards. Turns out the +160MHz OC I mentioned earlier was unstable. Regardless, at +120MHz, I'm hitting 2025MHz on both cards. Top card is hitting around 80-81c at 85% fan speed, the bottom card is hitting 72c at 72% fan speed.

 

 

Here are the OC settings and fan curve with the Heaven benchmark results.

 

[jimmyjimmies]

37 minutes ago, Frankenburger said:

I did some more testing with the OC on these two cards. Turns out the +160MHz OC I mentioned earlier was unstable. Regardless, at +120MHz, I'm hitting 2025MHz on both cards. Top card is hitting around 80-81c at 85% fan speed, the bottom card is hitting 72c at 72% fan speed.

 

 

Here are the OC settings and fan curve with the Heaven benchmark results.

 

This is going to sound like such a dumb question... where does the 2k+ number come from? I always see people post numbers like that but I'm missing something. FE is 1480 MHz -Real Boost Clock-1582 MHz I believe. So I look at that and assume it should be 1582+120=1802.  So where does 2025 come from?. and if its +120 clock and +300 memory then where does the 278 and 405 come from? Also when would you suggest altering the gpu voltage when overclocking? Thanks for the input! 

 

P.S.- I'm not retarded, I've just always overclocked based solely off of the +mhz offsets and power limit in afterburner to find my stable range 

[Frankenburger]

28 minutes ago, jimmyjimmies said:

This is going to sound like such a dumb question... where does the 2k+ number come from? I always see people post numbers like that but I'm missing something. FE is 1480 MHz -Real Boost Clock-1582 MHz I believe. So I look at that and assume it should be 1582+120=1802.  So where does 2025 come from?. and if its +120 clock and +300 memory then where does the 278 and 405 come from? Also when would you suggest altering the gpu voltage when overclocking? Thanks for the input! 

 

P.S.- I'm not retarded, I've just always overclocked based solely off of the +mhz offsets and power limit in afterburner to find my stable range 

The +Number people are posting is an offset that works in addition to the boost clock. The way GPU boost works is that it automatically overclocks your GPU based on power and thermals. The 1582MHz boost clock you see on the 1080Ti sheet is more of a "safe boost". In reality, most GTX 1080Ti's (if not all) will boost to around 1800MHz or higher. For example, both of my 1080Ti's automatically boost to 1911MHz out of the box. The core offset attempts (with no guarantee) to add that much more to the clock speed, as long as thermals and power allow it. This is the reason why with a +120MHz OC and out of the box boost of 1911MHz, my cards are hitting 2025MHz instead of 2031MHz.

[jimmyjimmies]

8 minutes ago, Frankenburger said:

The +Number people are posting is an offset that works in addition to the boost clock. The way GPU boost works is that it automatically overclocks your GPU based on power and thermals. The 1582MHz boost clock you see on the 1080Ti sheet is more of a "safe boost". In reality, most GTX 1080Ti's (if not all) will boost to around 1800MHz or higher. For example, both of my 1080Ti's automatically boost to 1911MHz out of the box. The core offset attempts (with no guarantee) to add that much more to the clock speed, as long as thermals and power allow it. This is the reason why with a +120MHz OC and out of the box boost of 1911MHz, my cards are hitting 2025MHz instead of 2031MHz.

whats your method for finding memory overclock stability? just increase until you see glitches in the picture like the clock speed or what?

 

and thanks that explained it perfectly

 

[Frankenburger]

19 minutes ago, jimmyjimmies said:

whats your method for finding memory overclock stability? just increase until you see glitches in the picture like the clock speed or what?

 

and thanks that explained it perfectly

 

You're welcome

 

Also, yes. Bumping up the memory OC until you see artifacts is basically the only way to do it. IMO, it's best to be conservative with the memory OC for 2 reasons. 1) Most cards don't have VRM or memory sensors, which makes it difficult to monitor the temps of those components. 2) Unlike core clock overclocking, there is no fail safe.

 

When you OC your core clock too much with modern cards, in most cases the worst that'll come out of it is your system will lock up or your drivers will crash. Unless you volt mod or bios mod, the most you can overvolt is by 87mV, which is actually a small bump in voltages. Memory, on the other hand, has no such cap, and is generally much easier to overheat than the CPU.

 

Generally, what I do to make sure I'm safe, is OC the memory by 50MHz at a time and stress the card for about 10 minutes. If everything looks good, bump it by 50MHz more. If I get artifacts, I'll usually back off by about 75MHz first, and if the artifacts continue, I'll back off by another 50MHz until the artifacts stop.

 

The memory OC I have posted above is actually what I would consider a conservative OC. I basically just set the memory to +300, and decided to leave it there without pushing any further after stress testing in FurMark and Heaven. Many people are hitting +500MHz on the memory with the 1080Ti, but I'm more paranoid about the VRM and memory temps, so the comfort of knowing I'm probably safe is worth the extra couple frames I'd get otherwise.

[jimmyjimmies]

3 minutes ago, Frankenburger said:

You're welcome

 

Also, yes. Bumping up the memory OC until you see artifacts is basically the only way to do it. IMO, it's best to be conservative with the memory OC for 2 reasons. 1) Most cards don't have VRM or memory sensors, which makes it difficult to monitor the temps of those components. 2) Unlike core clock overclocking, there is no fail safe.

 

When you OC your core clock too much with modern cards, in most cases the worst that'll come out of it is your system will lock up or your drivers will crash. Unless you volt mod or bios mod, the most you can overvolt is by 87mV, which is actually a small bump in voltages. Memory, on the other hand, has no such cap.

 

Generally, what I do to make sure I'm safe, is OC the memory by 50MHz at a time and stress the card for about 10 minutes. If everything looks good, bump it by 50MHz more. If I get artifacts, I'll usually back off by about 75MHz first, and if the artifacts continue, I'll back off by another 50MHz until the artifacts stop.

Okay got it. And last question-- when do you alter the gpu voltage during your overclocking process? I've heard a ton of varying opinions on whether or not to even touch it. Thanks!