PTM 7950 on RX 6800 XT results for anyone who cares
PTM 7950 on RX 6800 XT results for anyone who cares
- RED = Thermal Grizzly Carbonaut
- GREEN = PTM 7950 (no idea if the original or some fake but it works, bought from random seller on Aliexpress)
- before Arctic MX-4 was hitting TJmax 110C at 312W (good temps comparable to Carbonaut for first few days after application then drastic increase in short time due to pumpout issue)
- stock paste was hitting TJmax 110C at 255W (when I got the card it was used and already almost 2y old)
Unfortunately I don't have any data for the MX-4 and stock paste to put in the graph.
Testing was done with TimeSpy GPU Test 2 on a loop for 10 loops.
That's a pretty insane delta from paste alone. Is everything truly equal otherwise? Ambient? Heat build up in the case? 5 degrees centigrade simply sounds too good to be true!
Ambient was 1C to max 2C lower when testing PTM. Everything else is equal... except GPU fan speed which I forgot to cap at static RPM which means the PTM should give even better temps as it ran at lower fan speed too. (that's why I included it in the graph)
Carbonaut was tested in case with side panel. I tested PTM with and without side panel but the results are the same.
I should have also mentioned that when switching to Carbonaut it was absolutely necessary to use washers for higher mounting pressure otherwise the cooler was making very poor contact or no contact at all as the pad is extremely thin which resulted in significantly worse temps than stock paste.
I left the washers also when applying PTM so at least it's directly comparable to my Carbonaut results and I assume I would ran into the same issue as it's also very thin... and very, very difficult to apply.
EDIT:
Regarding Carbonaut, I've been benching yesterday the card to see how much the graphene pad can handle and even at 375W I still didn't manage to hit the TJmax of 110C and was able to get to Top100 in TimeSpy with GPU score on 6800 XT. This was absolutely impossible even with fresh application of MX-4.
I'm yet to try the same settings with PTM.