RTX 2080 Super GDDR6 memory overclocking

Just wanted to share this with anyone overclocking Turing video cards. The GDDR6 is extremely sensitive to temperature.

I have noticed with my 2080 Super bench marking this GPU with +1,400 or +1,500 memory is fairly easy. While gaming will crash with memory OC to high, and you must run around 1,100-1,250 depending on the game.

I’ve noticed that if I can keep my GPU temps in the lower 60’s then +1,500 on the memory is 100% stable.

I just wanted to share this information.

The 2080 Supers use 16GBPS Samsung modules. Although the 2080 Super PCB is only certified stable by Nvidia at 15.5GBPS. So the modules are underclocked. So the memory is extremely sensitive to temperature when it is overclocked to extremely high levels.

 

can you please post benchmarks of 0 oc on core and 1500 on memory vs stock....I thought memory overclocking was dangerous and pointless and only newbs do it.
if you overclock by 1500mhz which can wreck the card as many nbrs fly through laptops and cards for this reason it isn't worthwhile getting 4 extra fps when your over 60

 

I will gather some data for you. But, keep in mind we are simply overclocking memory that is already under clocked as it is. Also, overclocking this memory provides a 20% boost in available bandwidth.

see here. He runs OCed memory only in this video. I will do some test with my system too. And I’ll update this.



If you do everything right, you can get within 8-13% of a stock 2080Ti in 4K.

 

@JRE84

These are very impressive gains! I’m running mine at +1,500 right now. In all honesty, the 2080 Super actually is pretty darn super. It gets very close to a 2080Ti at only 1440P! I watched that video before buying one, and it immediately sold me on the value for $699.

 

im mean overclocking core is smart.....memory does not have thermal sensors that im not sure about.. i meant can you show only memory overclocking

 

The memory doesn’t have thermal sensors, what I meant was that overclocked memory can crash if the card gets to hot. The video I posted is only memory overclocking, his core was at 1,920 which is default boost of a 2080 super. I am going to post my own results today.

 

that would be awesome bro, as I just just bought a gaming laptop and this would help some people out.

 

Be sure to test scaling in FS:E and TS, that's where you will see best scaling.

 

yeah Im super excited to see his results and JC do you know if its safe or dangerous to overclock memory on laptops....I heard it was back in the day when everyone was overclocking for crysis and fried their cards....but nowadays u know...I have a gtx 1060 and don't know much about these cards...is 11000 on firestrike any good im getting 12500 for graphics but everyone seems to be getting alot better overclocked scores in 3dmark site. tips pointers nothing risky as this is worth more than my van

 

We don't do anything with the voltage for GDDR5, so temperature and regular degradation is in play. Most you'll likely run into is either ECC or driver crash/artifacts when pushing outside the limit of what the memory on your card can handle. So as long as you have proper contact and cooling, you should be fine.

Keep the gpu core stock, and try +100-200mhz steps on memory in FS/TS, keep mhz stepping up until you either run into artifacts or score begins to degrade. Sometimes you can hit a memory strap and ECC will kick in, ie. score goes down at 400Mhz, but increases at 500Mhz, so you want to keep track of score/mhz in a notepad or similar. When you find the limit, I'd test it in your games/applications and see whether its stable or needs lowering for stability.

 

Ok so I ran timespy with the memory at stock, and the memory at +1,500Mhz. All other settings are equal!

100% fan, max power limit, max temp limit for both runs.

With the stock memory profile the core does run slightly faster averaging 1,920Mhz. VS. with the memory overclocked the core averages around 1,905Mhz.

 

Can you try and run +500 / +1000

 

180 on memory 1060

stock

campbell stone atlanta

180 mem



almost no difference, so I guess it depends on the card

 

It's most visible in Firestrike Extreme and TimeSpy. Was +180 the limit before artifacts kicked in?

 

core and mem at 180 the max

 

yeah it crashes at 185 core and 185 mem

 

Please keep in mind that timespy and Firestrike use hardly any vram, and these are 1920x1080 benchmarks.

I am testing timespy extreme right now, to see how this 20% bandwidth increase with this memory OC would help in a more demanding high resolution test.

 

I am also seeing about a 8-9fps uplift in 1440P games. Sometimes more than that.

going from 65fps to 74fps in kingdom come deliverance is very good for just a memory OC.

 

You don't need to have core/mem linked to same speed

 

This was to see the scaling going from 0 500 1000 1500mhz

 

stock


mem


both

 

no its just a coincidence they both go to like 182 core and 183 mem and crash seperately its weird they are so close.

so long story short only overclock core

 

Yeah as others have said, I would run a lower core offset. If that is a laptop, then a undervolted curve would probably be preferable. And you can get that memory much higher than +185 without any harm.

 

how exactly?

 

it wont budge...artifacting lag and crashes...but even if i could overclock to 500 it would be 60 vs 62fps not worth it...however if i could overclock core by 500 im sure it would be a crazy gain.

 

GDDR5 is not as happy to overclock as the GDDR5X, but you can always grab a used 1080/2070 down the line, as people begin to adopt the super cards.

 

Time Spy 2560 × 1440 resolution. Time Spy take advantage from faster vram on RTX cards. Time Spy Extreme is 4K. And you'll have to lower the oc for TS vs. Firestrike

Edit. https://benchmarks.ul.com/3dmark

 

@Papusan do you overclock your memory? is it dangerous? if anyone knows its you!

 

All depends. Not with a slight jump in speed for daily gaming. Max overclock is for benching, not for gaming. Be sure you don't get artifacts who is the same as you have clocked vram above the limits (not healthy for the card). Then back of 100/200MHz for vram overclock. I would never run my card with a high overclock for 24/7. Find a middle way. And be sure you don't run the card near temp limit. The power delivery and vram don't have temp sensors. For desktops it's easier run higher overclock because you have better cooling. Happy benching/gaming.