RTX 5090 Founders Edition (FE) - 90% of stock performance @ 370 watts (65% power consumption): 860mV @ 2400MHz, 70% power target
Summary of Findings
The lowest voltage setting (860mV @ 2400MHz, 70% power target) delivers 90% of stock performance while using only 65% of the power, making it the most efficient option for users prioritizing power savings.
Undervolting at 900mV @ 2900MHz with 85% power target maintains stock performance (~101%) while reducing power consumption by 18%, making it the best balance between efficiency and performance.
Stock @ 70% power target drops performance to 90% of stock, but power consumption decreases by 21%, offering a decent compromise for those looking for an easy efficiency uplift.
Cyberpunk & Monster Hunter benchmarks show that undervolting can increase efficiency while maintaining competitive FPS, with the lowest voltage setting still providing strong results.
Overall, the lowest voltage setting (860mV @ 2400MHz, 70%) proves that significant power savings (35%) can be achieved while keeping 90% of stock performance, making it an easy way to optimize power efficiency without sacrificing too much FPS.
