How to lower the clock speed of an RX 5700 XT?
How to lower the clock speed of an RX 5700 XT?
Hey so i was wondering It Is worth to undervolt the card and max out the Power limit to 50% ? It Is for Daily gaming usage but i wanna keep temps low. Is increasing the Power limit doing something other than more stability ?
Whether it makes sense depends on the current situation. In my setup, I use both undervolting and FPS limits, which significantly cuts power usage for my card during games where extra frames aren't necessary. This works well alongside the trend I've noticed where higher power consumption doesn't always mean higher frame rates. On the other hand, some players can manage by just limiting power, though this won't impact stability. Undervolting might cause issues and needs careful testing to ensure it's reliable. Another option is to cap FPS if you're playing games that push the card to generate too many frames per second.
It seems you're wondering if it makes more sense to avoid a 50% position and stick to zero instead.
Undervolting offers clear advantages, pushing performance to its limits without major stability issues. It reduces temperature while boosting clock speeds, delivering benefits without significant drawbacks—just monitor for any signs of instability. Checking stability is straightforward using a stress test; the card will likely fail if pushed too far or crash quickly if it's slightly off.
Increasing power limits can backfire, causing the card to overheat and slow clocks, which hurts performance. Adjusting this carefully is key. Running fans faster can help maintain cooler temps, but be cautious of temperature spikes that signal reduced GPU lifespan (FIT).
A notable trend: lowering voltage cuts power needs while keeping clock speeds steady, meaning you don’t need to raise the power limit much to gain better performance and cooler operation.
Begin at 85% and establish an FPS limit that suits your comfort level.
Power Limit:
The 5700XT model has a 225W capacity. Raising it to +50% pushes it to 337W maximum. Energy equals heat.
Undervolting:
This involves adjusting the frequency versus voltage relationship. It usually means shifting the entire curve slightly (though you can tweak specific points), but for instance, if the default curve has a peak at 1900MHz with 1.1V (which matches your 225W limit), applying a -0.1V shift would move it to 1900MHz at 1.0V. As Drea mentioned, with AMD or NVidia’s auto-boost settings, this adjustment will likely cause the card to run at a higher frequency until it reaches the power cap again.
Sometimes (particularly for GPUs) the offset is shown in MHz units. In that case, a positive MHz value indicates an undervolt situation. For CPUs, the undervolt setting is expressed in voltage, so lower voltages mean more undervolting. It can be confusing.
To lower temperatures mainly, you can set a negative power limit (less than 100%/0%) or use other controls like frequency caps, AMD Chill, FPS limits, and so on. You can also pair these approaches with FSR if your frame rates have dropped significantly due to power restrictions.
I regularly run my 3060Ti at 75% of its power limit (-25% for AMD Adrenaline) without issue.