I'm almost all the way up to the highest voltage they let you run at 1.2v. I'm at 1.13 v @ 1935 mhz so far and max temp is still about 55C. My case cools like a beast man, I'm really surprised. People must have crap airflow in their cases. I'm telling you, 10 140mm case fans in a big case and m2 slotted pcie 4.0 ssd's are the way to go. Keep in mind that my GPU is 100% air cooled and my GPU fans are at about 1300-1400 RPM flat from 25C to 65 C. They are small fans that rev all the way up to 3000-3200 RPM, they start getting really loud around like 1400-1700 RPM, depends. Looks like I can full overclock with my PC in a hot Florida room where it's near 80F, and I haven't even hit 60 degrees C yet. Now, I do not have anisotropic filtering on, mainly because of my own eyes, it gives me eye pain with crazy lighting. I have 2x anti-aliasing on, I can go all the way up to 8x via Radeon, I'm overriding the game's graphic settings via my GPU settings. I actually don't like too high of anti-aliasing on this Cities game, because there's so many small vehicles and buildings and stuff, and the sharp edges actually make it easier to see. The map is HUGE for this game and you can zoom way in and out, so definitive lines is a must for me, since my health leaves me with massive visual snow and visual tearing. I do have Radeon's sharpness set to 100%, which really makes a huge different in texture and line clarity/separation.
So that's where I'm at so far. I read a decent bit about others who have OC'd their 5700's and 5700 XT's, and many, many of them have heat problems, they have to undervolt. GPU's need massive amounts of fresh air, regardless of the fan speed on the GPU.
My GPU running hot will make my secondary m2 slotted ssd heat up, because it's under the board surface, right next to the GPU pcie slot. Like, do people monitor the heat of their hard drives and motherboard components? The absolute highest temp I've seen out of my motherboard is 35 degrees C. My hottest m2 ssd has read about 48C, and they operate up to 70C.
The GPU, BY FAR, creates the most heat and will absolutely heat the motherboard and everything around that part of the MB, it'll heat everything up.
My suggestion if you have a hot GPU:
#1: Get m2 slotted SSD's, they use very little power and are very small, they are installed into the MB, so there's no hard drives blocking air flow inside of your case.
#2: Case fans, case fans, and more case fans. There's shouldn't be a fan mounting location that doesn't have a fan on it. The rear-top fan slot, usually right above the GPU, put a good fan there and run it as high as you can stand, because that one fan pulls air out through the back, which forces air to travel THROUGH the GPU, on it's way out of the back. The faster that exhaust fan spins, the more heat is being pulled out, and you don't have to rev your GPU fans up as much. Spinning your exhaust fans faster helps put less strain on your intake fans to achieve the same RPM.
#3: Mount your CPU radiator down low. CPU rads typically don't give off much heat, not much at all. If you have your CPU radiator up top, and it's getting hit with your GPU hot air, your whole computer is going to run hotter.
#4: Get the absolute biggest case you can and run positive pressure, aka more cubic feet of air being pumped into the case than being pumped out. A big case means more air inside for heat to dissipate. Positive pressure inside of the case results in some degree of higher air destiny, which means the cool air going into your GPU and into your case as a whole will be more dense. The more dense the air, the more heat will be transferred to the air, over time. I don't see why people think they can run a 200-300w GPU in a small case with very little case fans and expect it not to roast under a high load.
All of these small things add up to a huge performance increase.
I'll show my PC setup again, so it can be understood why my GPU seems to cool fairly well, even with my room being fairly warm and OC'ing pretty high up:
Here's where I'm currently overclocked to and stable to. I may mess with the memory clock, I was reading running higher GPU voltage gives the memory more voltage, in my case. So, maybe I can run faster memory now that I'm running such a high voltage. I'll figure that out once I full OC the GPU processor. Once again, this is a Radeon XR 5700 XT GPU model called the Sapphire Nitro+:
