01.What is NVIDIA Reflex?
In competitive games in 2026, winning or losing depends on milliseconds. **NVIDIA Reflex** is a technology that removes the "congestion" between your processor and your graphics card. Without Reflex, the CPU sends frames to a queue and the GPU processes them when it can. With Reflex, the CPU only sends the frame at the exact moment the GPU is ready, eliminating the delay (input lag) between your click and the shot appearing on screen.
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02.1. ON Mode: The Ideal Balance
By activating only 'ON', you get the following benefits:
- Reduced Latency: Your commands feel more direct and responsive.
- Stable Temperature: The graphics card doesn't work harder than necessary, keeping the PC quieter.
- Consistency: Reduces sudden delay variations, which helps with your aim muscle memory.
03.2. ON + BOOST Mode: Extreme Reaction
For competitive scenarios:
The ON + BOOST mode does something aggressive: it prevents the graphics card from reducing its clock (speed) even when the game load is light (CPU Bound).
Imagine you're standing still looking at a wall; the GPU would normally lower its speed to save energy. With Boost, it stays at maximum. This ensures that if an enemy suddenly appears, the GPU response is **instantaneous**, without the small delay needed for it to "wake up" to process the movement.
04.3. Which to Choose in 2026?
- Use ON + BOOST if you play games like Valorant, CS2, or Warzone professionally and don't mind the fan noise or power consumption.
- Use only ON for adventure games or if you play on a Gaming Laptop. Boost mode on laptops can cause unnecessary overheating, which ends up generating FPS drops due to heat (Thermal Throttling), canceling out any latency benefit.
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Written by a verified expert
Douglas Felipe M. Gonçalves
Expert in Windows system optimization with years of experience in hardware diagnostics, kernel tuning, and advanced technical support. Founder of Voltris and developer of the Voltris Optimizer.
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By following this guide on NVIDIA Reflex: What is the Difference Between ON and ON + BOOST? (2026), you are equipped with the verified technical knowledge to solve this issue with confidence.
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