5700XT - Custom Cooling the Vram

[Dacien]

I bought a 5700XT and slapped an Accelero Xtreme 3 on it and have tons of thermal headroom to overclock the GPU, reaching pretty comfortably up to 2100 MHz below 90C hotspot at lower framerates, 2000 MHz at 95C hotspot at 144 FPS. But the memory, oh the memory. Even after installing custom copper shims with additional heatsinks, the VRam reaches in excess of 95C, closing in on 100C during stress tests. What's the reasonable limit for GDDR6 VRam?

 

Any ideas for custom cooling the Vram?

 

Updated:

 

So I bought some copper shims for the Vram, and some 14mm copper heatsinks to place on top of them. This is mostly to cover the chips that are blocked by the gpu bracket on the Accelero Xtreme 3.

 

 

 

 

The section in blue was particularly problematic. The heatsinks would not fit under the GPU bracket:

 

 

 

 

I ended up having to extend out another layer of base plate and tweak the pins an embarrassing amount. It's completely jank, and I'm not proud of it, but I had no choice.

 

 

 

 

The other heatsinks needed to be tweaked as well to fit under the GPU heatsink, but I was able to make those look much nicer. So was it worth it? Stock settings with no Wattman, I was getting around 82C-84C, but any overclock shot my Vram temps up to 100C and would have continued if I let it. I was able to achieve a 5553 score on Superposition by overclocking the Vram, but I don't want to talk about the temps I put the card through doing that.

 

This is with no memory overclock, but max GPU overclock (2150 MHz), power limit 50%, at 1.2 volts:

 

 

 

So all in all, worth it. But temps are still way too hot, and I don't think anything short of a waterblock would solve the problem entirely.

[Jurrunio]

Micron rates theirs to work from 0C to 95C. For lifespan I'd keep them below 80C

[spartaman64]

1 hour ago, Jurrunio said:

Micron rates theirs to work from 0C to 95C. For lifespan I'd keep them below 80C

thats the case for like almost every computer component does it has something to do with silicon 

[Jurrunio]

2 minutes ago, spartaman64 said:

thats the case for like almost every computer component does it has something to do with silicon 

it's called chemistry

[Fasauceome]

3 minutes ago, spartaman64 said:

thats the case for like almost every computer component does it has something to do with silicon 

Semiconductors begin to malfunction at 100 Celsius. 

[xg32]

25 minutes ago, Dacien said:

.

some1 degraded their card in 6 months after ocing their ram to 8200, i'd back it off a bit.

[Dacien]

Okay well at least in real-world benchmarking, like Heaven, it stays reasonably cool, around 80ish. 

 

[Dacien]

2 minutes ago, xg32 said:

some1 degraded their card in 6 months after ocing their ram to 8200, i'd back it off a bit.

That's the crazy part, I haven't even touched the VRam OC. If I could I'd test out underclocking it but Wattman doesn't have that option.

[xAcid9]

 

1 hour ago, Dacien said:

Okay well at least in real-world benchmarking, like Heaven, it stays reasonably cool, around 80ish. 

 

Try something that utiliize more VRAM? Superposition maybe? 

[Dacien]

8 minutes ago, xAcid9 said:

 

Try something that utiliize more VRAM? Superposition maybe? 

About the same, 82C.

[Tradition2553]

Did you find a way to fix it i have a rx 5700 with custom cooler and its also hitting 100c on the memory vrm and other stuff are perfect but memory its hot as hell

[Dacien]

1 hour ago, Tradition2553 said:

Did you find a way to fix it i have a rx 5700 with custom cooler and its also hitting 100c on the memory vrm and other stuff are perfect but memory its hot as hell

No, I just have tons of heatsinks and fans. They only hit max 86C during heavy gaming, so it's acceptable. It's only during the stress tests that it gets so high, so I'm just living with it for now.

[Durbins]

I too have a 5700 XT and am having problems with my Morpheus cooler, I have some small heatsinks on the memory with thermal adhesive tape and 3 fans blowing straight on to the card, My junction is super low! and I have so much room to overclock, but my memory is getting to 90c on load and I am not sure what to do about it, It's warmer than the junction temp... Keep sharing information hopefully we can find something to keep them cool.

[Dacien]

11 hours ago, Durbins said:

I too have a 5700 XT and am having problems with my Morpheus cooler, I have some small heatsinks on the memory with thermal adhesive tape and 3 fans blowing straight on to the card, My junction is super low! and I have so much room to overclock, but my memory is getting to 90c on load and I am not sure what to do about it, It's warmer than the junction temp... Keep sharing information hopefully we can find something to keep them cool.

My next plan is to install copper shims on all ram chips to extend the surface area out so I can fit some large 14mm copper heatsinks, instead of the included aluminum ones.

 

I'll have to wait until more Kryonaut arrives because I used it all building my comp. The entire cooler will need to be removed to access all the ram.

[Durbins]

Post updates, I am also looking for 3 longer copper heat sinks I can extend across 3 chips. Let me know if you find any goodies.

[Dacien]

18 minutes ago, Durbins said:

Post updates, I am also looking for 3 longer copper heat sinks I can extend across 3 chips. Let me know if you find any goodies.

There's some 100X100mm slabs on Amazon, and I can cut them down at work since there's a bandsaw on my jobsite, but the problem is numerous IC's blocking a perfect path. It might be a better situation for your cooler, but for the Acceleo Xtreme 3, I'm going with some 14x14x14mm heatsinks and some 20x20mm copper shims. I can shim out for enough room to fully seat the heatsinks, but I'll probably have to tweak the pins to get them under the GPU heatsink fins.

 

Here's the 100x100 slabs.

 

If you have something to carefully cut with you can size them yourself. Tin snips would probably warp the shim.

 

 

[Durbins]

https://www.amazon.com/Alphacool-Copper-Heatsinks-14mm-10-Pack/dp/B077VM8FJW/ref=sr_1_1?keywords=alphacool+heatsinks&qid=1563589559&s=gateway&sr=8-1

I am thinking of getting these, I am using some crappy thermal tape right now, is there a better solution for heatsinks without pressure mounting besides arctic silvers thermal epoxy? that would obviously be a pain to remove if even possible.

[Dacien]

15 hours ago, Durbins said:

https://www.amazon.com/Alphacool-Copper-Heatsinks-14mm-10-Pack/dp/B077VM8FJW/ref=sr_1_1?keywords=alphacool+heatsinks&qid=1563589559&s=gateway&sr=8-1

I am thinking of getting these, I am using some crappy thermal tape right now, is there a better solution for heatsinks without pressure mounting besides arctic silvers thermal epoxy? that would obviously be a pain to remove if even possible.

I used a 50/50 mix of thermal epoxy and Ceramique 2, and the heatsinks stayed on when the card was installed, and came right off when it was time to remove them. Almost too easily. I'll probably go with a bit more epoxy than Ceramique 2 next time, something like 60/40. Alternatively, 3M 8810 is supposed to be good too, and I might go with that for ease of use.

 

But I'm going with these for the heatsinks: https://www.amazon.com/gp/product/B002BWXW6E/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

 

Because I'll be needing to slightly tweak the poles to fit underneath the gpu heatsink, fins won't work. But I think yours look better at dissipating heat.

 

 

[Durbins]

Yeah, I am actually going to be using clippers to fit mine underneath my Morpheus and splay out the fins a bit and get them right behind my heatsink so air continues to flow through its fins and into the fins of the little copper sinks, Thanks for the recommendations on paste/adhesives I had thought about mixing ceramique in with some of arctic silvers adhesive as well. For now I just bought thicker better rated thermal tape, Will look into 3m 8810.

[Dacien]

6 hours ago, Durbins said:

Yeah, I am actually going to be using clippers to fit mine underneath my Morpheus and splay out the fins a bit and get them right behind my heatsink so air continues to flow through its fins and into the fins of the little copper sinks, Thanks for the recommendations on paste/adhesives I had thought about mixing ceramique in with some of arctic silvers adhesive as well. For now I just bought thicker better rated thermal tape, Will look into 3m 8810.

My heatsinks come in today or tomorrow, I'm crossing my fingers and will update the thread. Ideally I'd like the memory temps to stay under 90C during a stress test, but even if it's still really high, temps are reasonable in a gaming workload, so it won't be the end of the world.

[Dacien]

Updated the OP.

[Tonberry]

How much temps drop did you get while running stock state with that cooler?

 

I never swap custom cooler manually on any GPU, how do we stick all those heatsinks on to the GPU VRAM & VRM? Is it by just simply press them to the thermal pads and they will stay there not going to fall off?

[Dacien]

9 minutes ago, PotatoCanDo! said:

How much temps drop did you get while running stock state with that cooler?

 

I never swap custom cooler manually on any GPU, how do we stick all those heatsinks on to the GPU VRAM & VRM? Is it by just simply press them to the thermal pads and they will stay there not going to fall off?

I just ran it at stock, and Vram topped out at 84C. The heatsinks and shims come with adhesive tape. I'm not sure if it's 8810, but I'm sure it does an acceptable job.

[Tonberry]

On 7/19/2019 at 5:56 PM, Durbins said:

I too have a 5700 XT and am having problems with my Morpheus cooler, I have some small heatsinks on the memory with thermal adhesive tape and 3 fans blowing straight on to the card, My junction is super low! and I have so much room to overclock, but my memory is getting to 90c on load and I am not sure what to do about it, It's warmer than the junction temp... Keep sharing information hopefully we can find something to keep them cool.

A Morpheus II?

I never knew it's compatible for 5700XT as it's an old model while the GPU is a new released. How did you get them compatible?

 

Could you please share us some pics of it?

I always interested to Morpheus II since long time but never take the chance to get one.

 

I wonder if we can put a CPU cooler on 5700XT or any GPU but it will need a custom mounting hardware, just like what "DIY Perks" did on a power hungry GPU with an NH-D14 CPU cooler.

 

I'm thinking about doing the same but using an NH-C14S or DRTF or any downdraft CPU coolers as it could cool the VRAM also. But that custom made mounting hardware though, wonder if there's alternative way to mount it.