AMD RX 7000 series GPU Owners' Club

[Vya Domus]

I wonder if a good way to know if a waterblock/cooler is mounted correctly is to simply check the MCD hotspot temperatures, since the MCDs are placed around the GCD if they all report roughly the same same temps then probably there is even pressure from the cold plate.

 

[Kabouter Plop]

I wonder if a good way to know if a waterblock/cooler is mounted correctly is to simply check the MCD hotspot temperatures, since the MCDs are placed around the GDC if they all report roughly the same same temps them probably everything is fine.

View attachment 308533

The less flat chip is the higher the delta probably, if you wanna get temps as low as possible i would try PTM7950 honeywell pad directly on core.

Also relevant.

If you hitting 40c deltas suddenly when you normally only have 30c then i would be woried cheap paste won't work, use something that does not pump out PTM7950 as far i understood outperforms anything potentially as good or better then liquid metal, well better since its not electrically conductive at least.

Today i idle at 24,3c watertemp

You can see huge difference in mine as well and this is with PTM7950
30c outside over here right now and next 2 weeks it will be 24 25+ outside i wish summer was over
If my hotspot delta gets worse and go's up and does not go down after it gets colder again i probably RMA my card if PTM7950 can't fix it nothing can, altho its looking fine so far 10 days old aplication now seeing temps go up with higher room temp and watertemp is normal.

the 7900 XTX may also have a mounting presure issue that cannot easily be fixed, i do not think my hotspot delta would go down if i removed all the thermalpads not like i would wanna run it that way anyway, its as tight as it go's think the standoffs just wont go further down unless i shaved them off by a 1mm.
If you check in hwinfo make sure you set prefer AMD ADL in options and if you used DDU use it from safe mode or hotspot temp will read out much hotter then GPU hotspots which is the sensor AMD uses i think or GCD hotspot temp, if had GPU Hot Spot report 90c hotspot when it only showed 85c on GCD for like 5 seconds usually they are only off by 1c because one reads out in 71.7 and other rounds it up or down.

 

[Vya Domus]

Another weird thing I noticed is that when I have just 1 display plugged in the card and the other in my motherboard for example I get higher minimum FPSs than If I plugged both in the card. Average FPS stays the same, just the minimum changes, I don't really notice it but sure enough it can be replicated with any benchmark.

 

[Kabouter Plop]

Another weird thing I noticed is that when I have just 1 display plugged in the card and the other in my motherboard for example I get higher minimum FPSs than If I plugged both in the card. Average FPS stays the same, just the minimum changes, I don't really notice it but sure enough it can be replicated with any benchmark.

I guess its a Windows thing Linus did a video about it very recently but i do not remember if he considered testing also on igpu with 1 monitor.

 

[QuietBob]

Since everyone seems to be playing Forza Horizon 5 this weekend, I ran the benchmark in maxed out 4K (no RT/AA). I wanted to see how green the 7900XTX is with a 60 fps cap:

172 vs 347 W GPU = 50% GPU power saved = 50% less heat
51 vs 63 C = 12 C lower edge temp
57 vs 81 C = 24 C lower hotspot temp
46 vs 54 W CPU = 15% CPU power saved

Result = cooler and quieter gaming environment
Take that, summer!

 

[physicsjunky]

I have liquid metal to put on my 7900 XTX but i don't want to damage anything. I've looked for barriers to go around the gpu die but didn't find any results and would clear nail polish be ok to put around the gpu or die?

 

[Kabouter Plop]

I have liquid metal to put on my 7900 XTX but i don't want to damage anything. I've looked for barriers to go around the gpu die but didn't find any results and would clear nail polish be ok to put around the gpu or die?

I wonder what AMD uses on their AM5 chips that probably would work well but you would have to properly clean it first as well, most people if heard use nail polish i think, altho i dunno if liquid metal is worth the risk especially if can achieve near same results or better with PTM7950, getting my 2e Mo-ra3 soon my delta's are gonna be so low and i will add my cpu to the loop.

 

[Vya Domus]

I have liquid metal to put on my 7900 XTX but i don't want to damage anything. I've looked for barriers to go around the gpu die but didn't find any results and would clear nail polish be ok to put around the gpu or die?

I don't know if it's the best choice, honestly going for liquid metal is rarely ever worth the risk.

 

[Kabouter Plop]

liquid metal will also leave a mark on the cooler so nickel plating is prefered directly on copper is bad idea, also the chip it self it will leave a mark, so if you are hoping to hide it from vendor you got warranty from good luck they can tell probably you used it, i would just try PTM7950 as its safe honestly, seeing some users switch from liquid metal to that as well sometimes on reddit when you search on subjects regarding PTM7950

Best thermals just go watercooling still not good try PTM7950 after that it won't get much better unless your loop is being overwhelmed you could get bigger radiators or go external with a Mo-ra3 with quick disconnects this morning at about 20-22c watertemp i hit max 65-67c hotspot in 3D occt test at 410w total board power, idling at 25c watertemp almost now doing nothing last day its hot over here now finally.

This is with PTM7950 aplication that is nearing 1 month 3+ weeks old
Thermal paste on my card just gets worse after 1-2 weeks altho my MX-4 tube was also 7 years old but it still gave max hotspot of 75c at about 22-23c watertemp edge temp of 38-42c that got also worse after couple of weeks.
My hotspot used to be 92c even at low watertemps despite it having this kind of imprint

my edge temp is usually 1c above watertemp so my watertemp this morning was probably at 22-23c cos it was coldboot temp
once the summer is over i should be around 18-20c watertemp probably maybe lower in the winter, i never turn on the heater cos my PC keeps it warm enough in my room anyway.
Anyway notice there huge empty spot with no paste on 1 area despite using almost to much thermal paste that performed fine for 1-2 weeks then got worse.

 

[physicsjunky]

I have about 2 grams of thermal grizzly conductonaut i just want to use it up but i don't know the safe amount to put on or stuff to use as a protective barrier.
Look at my system specs for the gpu, the cooler is fully nickel plated and i'm not really worried about warranty.

 

[QuietBob]

With 28 C in my room I checked the maximum temperatures of my MBA 7900XTX with stock clocks and default fan curve. I took this measurement in Immortals of Aveum, with constant 100% GPU load for over half an hour, and with the temperatures stabilized:

The fans only ramped up to 68% of their maximum rpm. So the temperatures could have been even lower, regardless of the high ambient. I'd say those are pretty good results for a reference cooler

 

[Space Lynx]

With 28 C in my room I checked the maximum temperatures of my MBA 7900XTX with stock clocks and default fan curve. I took the measurement in Immortals of Aveum, with constant 100% GPU load after about half an hour, with the temperatures stabilized:

View attachment 310631

The fans only ramped up to 68% of their maximum rpm. So the temperatures could have been even lower, regardless of the high ambient. I'd say those are pretty good results for a reference cooler

considering your 28 celsius room temperature those temps aren't bad. I keep my room at 20 celsius year round

 

[Kabouter Plop]

lol if had 92c hotspot before having PTM7950 on my liquid devil at like 25c room temperature even with stock paste, that was depressing, tommorow finally cold weather is returning, then hopefully it will get colder again in the comming weeks as summer ends over here in less then a month.
I wanna see what my liquid devil 7900 XTX can do at 18c room temp or colder.

 

[QuietBob]

...and the weather forecast for tomorrow:

Been like this for two weeks now, and not a drop of rain. I also can't wait for this heatwave to end, so I can do more benchmarking

 

[remekra]

During the last heatwave I've got around 26-27 in my room. My Nitro+ still did not exceed 88C hotspot at 400W, while fans spin at max 1200RPM. Had an MBA, then the Gigabyte Gaming OC one, but only this feels like a really good designed cooler.

 

[Kabouter Plop]

During the last heatwave I've got around 26-27 in my room. My Nitro+ still did not exceed 88C hotspot at 400W, while fans spin at max 1200RPM. Had an MBA, then the Gigabyte Gaming OC one, but only this feels like a really good designed cooler.

Nitro+ is probably the best aircooled card you can get

 

[Space Lynx]

Nitro+ is probably the best aircooled card you can get

I agree with this, I think the XFX MERC cards are the second in line though. keep in mind on default bios, no oc, i get 54 celsius core and 74 hotspot in the most demanding of games (which matches the guru3d review of the same card... this thing runs cold!), and the fans are barely audible. sure if i want to crank up the fans I can get a little more performance, which I do. but unboxing my xfx merc card i was impressed by all of the metal. also i love that there is no rgb, rgb distracts me

 

[Kabouter Plop]

Worst is probably Powercolor this generation atleast they messed up thermal paste aplication, they should move to PTM7950 for all their high end cards including other vendors, maybe Sapphire is already doing it would explain why they having best aircooled card.

 

[TheoneandonlyMrK]

Worst is probably Powercolor this generation atleast they messed up thermal paste aplication, they should move to PTM7950 for all their high end cards including other vendors, maybe Sapphire is already doing it would explain why they having best aircooled card.

To be fair knowing what they're doing helps Sapphire not some exotic thermal pads.
I just refurbished a classic sapphire pulse rx580 and for the 229£ it was bought at it's a very well made card and cooler with shrouded thermal bye pass zones way before anyone else tried them.
After a repad and retim it's like new, thermal behaviour wise anyway.

I really like sapphire after many years of using they're part's.

 

[remekra]

Nitro+ is the only 7900XTX I've had that does not exceed 20 degrees delta between edge and hotspot. My Gaming OC that I refunded was always at 30 and above delta. MBA as well.

 

[Frick]

Worst is probably Powercolor this generation atleast they messed up thermal paste aplication, they should move to PTM7950 for all their high end cards including other vendors, maybe Sapphire is already doing it would explain why they having best aircooled card.

The Asrock Phantom Gaming OC apparently has really bad quality control. I've read some reports of coolers that had loose screws.

 

[Kabouter Plop]

Nitro+ is the only 7900XTX I've had that does not exceed 20 degrees delta between edge and hotspot. My Gaming OC that I refunded was always at 30 and above delta. MBA as well.

That can be for good or bad reasons, good reason their chips are better, bad reason the edge actually touches the cooler much less then the center of the die which would cause slightly higher edge temps which in result would mean lower delta as result of edge being slightly hotter, but if the edge temp matches what other vendors have while hotspot is lower then that is a good thing.

my edge used to be 50 55c on my liquid devil 7900 XTX after repaste i even got it down to 38c these days its 40 42c edge temp with PTM7950 and 60 to 70c hotspot at 21c water temp i can achieve 65-66c hotspot temp max which while it usually avg hotspot much lower like 4 or 5c lower usually so at 40 edge 60c hotspot i can also achieve 20c delta at 410w total board power, im not sure if its gonna stay this good i suspect it will as PTM7950 last much longer then regular thermal paste that custom aib apply, but that could also be that Sapphire already aware of PTM7950 being amazing for GPU core using it already, NVIDIA uses it on the 4090 FE as well Lenovo on their laptops.
In such case i would never consider replacing the PTM7950 for regular paste its always gonna be worse.

NVIDIA atleast EVGA used to make the edge touch the cooler more while center much left so when chip heats up its perfectly flat, but it could crack on liquid nitrogen which is risky.

First time 20c this morning at cold boot now 22,1c watertemp avg.

Running 3D occt for 1 minute if the watertemp stays at 20c the edge temp will also stay roughly at 21c 21.5c
Delta of 28c games are usually in 60c to 70c so probably in 55,5c to 65,5 hotspot range at 20c watertemp
Cannot wait for winter cos last winter i had 55c max hotspot on my old gpu at 290 TGP roughly or almost 355w tbp equivalent.

Anyway i think in case of less flat die on AMD gpu hurts edge temp more then it hurts hotspot cos the lack of contact makes edge run hotter decreasing the delta but i could be wrong.
Speaking of which if you do av1 relive recording atleast the edge temp will go up more as well raising edge temp decreasing hotspot temp giving you different deltas as well.

Ratchet clank at 22c minimum 26.1c max watertemp

1 hour or so

 

[Amir43]

Hey guys. Can you tell me the dimensions of the 7900XT chip. My Asrock RX7900XT Taichi after 3 months very high hotspot 96c. I would like to replace it with a Honeywell ptm7950. I found a 25x25mm, is that enough?

 

[Kabouter Plop]

Hey guys. Can you tell me the dimensions of the 7900XT chip. My Asrock RX7900XT Taichi after 3 months very high hotspot 96c. I would like to replace it with a Honeywell ptm7950. I found a 25x25mm, is that enough?

Its very finicky to work with just get 80*80 biggest size pad and cut to size may take 2e try there plenty of tips online, keep us update how it works out not everyone gets big improvement, you can accidenticly rip the pad cos its very fragile after putting it on the gpu core for example happened to me on first attempt so i held pad in place more while i peeled 2e time.

 

[Space Lynx]

Its very finicky to work with just get 80*80 biggest size pad and cut to size may take 2e try there plenty of tips online, keep us update how it works out not everyone gets big improvement, you can accidenticly rip the pad cos its very fragile after putting it on the gpu core for example happened to me on first attempt so i held pad in place more while i peeled 2e time.

did it lower your temps any? my 7900 xt has so much metal on it, that i am considering liquid metal. liquid metal doesn't make sense for most cards true, but mine is a giant card with all metal... so it might act more like a laptop... not sure if i want to risk liquid metal or not yet though. also i don't know if my baseplate on the heatsink is copper or what