Undervolting Vega 56 - No Change in Temperature?
Undervolting Vega 56 - No Change in Temperature?
I share this setup with several people and everyone agrees with me. Because it's a blower card, around 20% is where the noise becomes noticeable as actual fan sound. Below that, it's mostly the usual computer idle hum; my old 380 model would have been in that range during full load. I think the fan isn't broken—it's just a normal blower card.
That's interesting. I think I'm definitely in the "sensitive to fan noise" group because I don't use headphones while gaming. It seems like you were trying to understand my perspective on the difference between a faulty fan and selective hearing.
I guess what I needed was for the question to be addressed directly.
Eventually, you'll hit constraints due to the 20% fan speed limit and a power card that only handles 200W. After undervolting, reapplying TIM, ensuring proper case ventilation, and using Chill/FRTC, the only remaining solution is lowering clock speeds or performance until a safe temperature is achieved with that fan setting.
It seems your card is leveraging the lower voltage to increase its operating frequency, leading to greater power and heat output. This means you're not achieving significantly cooler temperatures, but you're seeing improved performance under the same conditions.
20% fan is not enough, and there is no undervolting or anything you could do to change that. I know you say you are sensitive to it, but that means that you should consider other cooling options, get a liquid cooler kit, or replace the cooler with a multi fan setup (if someone even makes one aftermarket for that card), or just sell it and buy an aftermarket cooled one.
For being sensitive to the fan you picked the wrong card.
Absolutely, it's not about the current value of the card; my main concern is the black screen issue.
Even a modest improvement of 20-30% doesn't significantly enhance the card's performance and raises the noise level to a point where it becomes audible through my noise-cancelling studio monitors even at a reasonable volume during gameplay. I'm content with its current operation between 82-83 degrees, though 85 felt slightly excessive. The price was too low to ignore, so I might need to lower performance at higher temperatures if necessary. Since the games I usually play run at full capacity—DOOM—and Vulkan allows smooth over 200 fps at maximum settings, keeping it locked around 145 FPS has also been beneficial.
those temperatures are way higher than expected. You need it to operate in the mid-70s, not near 85. At that heat, the memory will slow down significantly.
The fan should be running at full capacity, and a blower-style cooler is essential to manage the heat effectively—it’s impossible to dissipate the heat without it.
I mostly grasp this and blower architecture, but that won't actually occur. I'd rather not have to obtain building site hearing protection just to use my computer.
Then you should consider purchasing another GPU. What you are asking it to do it isn't going to do. You could buy a liquid cooler for it, or maybe a shrouded fan setup if someone makes one I'm not sure. Otherwise if you understand how it works, and yet are ignoring it there really isn't anything anyone can do for you. The Vega is a HOT card, it needs a lot of cooling to run full speed. No amount of undervolting or underclocking will help, you asked what you're doing wrong, expecting to cool this thing with anything but the fan at max is what you're doing wrong.
Running at 74 max currently, maintaining the same frequency with a 30 mhz setting reduced the top clock and lowered power usage to 40% instead of 50%. Increased the fan speed from 75 to 25 and placed insulating foam behind the case along with another fan to direct hot air away from the card. The system operates adequately but isn't at full performance as expected.