What's the consensus on safe Ampere Memory Junction Temperatures?

[Mister Woof]

I had read that 100-110c is within range, but that seems pretty hot to me.

 

I recently upgraded my CPU, which required the use of a larger AIO for intake, and I saw my GPU temps increase a few degrees as expected.

 

Prior to the upgrade with 3x intake fans while gaming:

 

Core 67

Memory Junction 82c

Hotspot 78c

 

After the switch to the AIO

 

Core 70

Memory Junction 88c

Hotspot 82c

 

Now, we aren't even in the summer months yet so I expect a few C higher once the weather changes.

 

What is "too hot" for Memory Junction and Hotspot on a 3080 series GPU?

[Jurrunio]

Operation temperature is 0C to 95C, this isnt the same as Tjunction but let's take 95C as the max you should let it reach since Tjunction won't be lower.

 

Also higher temps worsen overclocking.

[SkilledRebuilds]

Officially I don't know the swetspot, I've watched a few miners of 3090's cool them just enough at the bleeding edge (say 95-98*c Junction) with cooling applied.
My rule of thumb is 80-85*c for most PC components might be fine, but surrounding components may not be as tolerant..so less than 80-90*c would be ideal for me personally.
But thats essentially offtopic because I've no experience myself using said GPUs like that.

[GuiltySpark_]

I see a max of 96c in Cyberpunk (RTX Ultra, 3440x1440) on my 3090 FE bone stock.

 

I tried mining the other weekend with Nicehash and saw an immediate jump to 106c  so I shut that down fast and uninstalled it. I'm just not (yet) willing to pull apart my $1500 GPU just so I can mine but its perfectly fine when gaming. 

[CTmanGer]

Cool the Backplate... worked for me

Now max junction temp is 80⁰ @10400MHz

GPU fans @ 70%

[Mister Woof]

2 minutes ago, CTmanGer said:

Cool the Backplate... worked for me

That's pretty interesting. Are those just stick on heatsinks?

[CTmanGer]

It just increases the surface area, where heat can dissipate ...

instead of a flat small backplate surface area where air can hardly take away any heat.

 

Just some self adhesive heatsink + I put a random fan on top

 

Before gaming or mining RAM Junction Temp @ standard 9500MHz reached 95 Celsius

[FrankGehry]

I've done some mining on my 3090 FE, and I replaced all the stock thermal pads along with the thermal paste. I'm undervolting my card, and I can get around 106 MH/s. My memory temps are between 90-94C. Is this a safe temperature for my card to mine at in 8-ish hour segments?

[Asryan]

I've put heatsink and a fan on the top of the backlpate of my 3090

I've undervolted as well

 

but it some games the MTJ is still going up to 85 to 88c with fan at 100%, is that completely safe?

[Mister Woof]

28 minutes ago, Asryan said:

I've put heatsink and a fan on the top of the backlpate of my 3090

I've undervolted as well

 

but it some games the MTJ is still going up to 85 to 88c with fan at 100%, is that completely safe?

95c is the spec on G6X, but Nvidia says up to 110 is fine and doesn't throttle until then.

 

Imo anything around 90 is probably fine

[Exeon]

That's another reason I shy away from AIO's.

Although top of the line ones will beat the very best air coolers, your GPU temperatures take a hit.

NH-D15 for life lol.

 

I'm not fond of letting things run that hot, Nvidia may say 110 is fine, however they don't care if your card break down in 2 years, as long as it's outside of warranty.

 

Basically the cooler it runs the longer it generally lasts.

Anyone remember the old 8800gtx series? I remember them running hot as hell, near 100C, I also remember their lifespan often didn't reach 3 years.

 

Times change and so do components and cooling but I don't believe 110C is healthy.

[Mister Woof]

12 minutes ago, Exeon said:

That's another reason I shy away from AIO's.

Although top of the line ones will beat the very best air coolers, your GPU temperatures take a hit.

NH-D15 for life lol.

 

I'm not fond of letting things run that hot, Nvidia may say 110 is fine, however they don't care if your card break down in 2 years, as long as it's outside of warranty.

 

Basically the cooler it runs the longer it generally lasts.

Anyone remember the old 8800gtx series? I remember them running hot as hell, near 100C, I also remember their lifespan often didn't reach 3 years.

 

Times change and so do components and cooling but I don't believe 110C is healthy.

It's always a balance. GPU temp is still within range, but with a big air cooler CPU temps took a huge shit with 300+ watts of GPU waste heat.

 

Ultimately in my case, the improvement in CPU temps was more beneficial than the small detriment in GPU temperatures.

 

Case by case.

[Asryan]

Also is there a big difference for gpu temps between aio front intake or top exhaust or is it négligeable?

 

I just played this game the Dungeon of Naheulbeuk, a lttle RPG which does not seem so intense on gpu and i got 75c core and 90c memory with 100% gpu fans, default profile, 25c ambiant. Bad optimisation or gpu issue? Or is it all fine? 

[Mister Woof]

7 minutes ago, Asryan said:

Also is there a big difference for gpu temps between aio front intake or top exhaust or is it négligeable?

 

I just played this game the Dungeon of Naheulbeuk, a lttle RPG which does not seem so intense on gpu and i got 75c core and 90c memory with 100% gpu fans, default profile, 25c ambiant. Bad optimisation or gpu issue? Or is it all fine? 

Going from a big air to front aio intake, i noticed maybe a 1-2c difference in GPU core temp and perhaps a 5c difference in memory junction.

 

Meanwhile differences in CPU temps was around 10c

 

Those temps are within spec, but I don't see those except for full GPU load.