TestOut LabSim A+ Certification Practice Exam

Which statements are true when linking multiple video cards to increase performance? (Select two)

1. SLI and CrossFire are two different methods for linking video cards

2. Both cards must be different models to work effectively

3. In most cases, both cards should be identical

4. Video cards in SLI must have separate power supplies

The correct answer is: SLI and CrossFire are two different methods for linking video cards

Linking multiple video cards to enhance performance can significantly improve graphical rendering and processing in demanding applications and games. Among the provided statements, a noteworthy aspect is that SLI (Scalable Link Interface) and CrossFire are indeed two different technologies developed by NVIDIA and AMD, respectively, designed to allow multiple graphics cards to work together. This distinction is crucial for anyone looking to set up a multi-GPU system as it indicates that compatibility and the setup process can vary based on the technology used. Identifying that both cards should typically be identical is also essential for optimal performance in multi-GPU setups. By using identical models, users can ensure that both video cards can work synchronously without discrepancies in performance. This is important because significant differences in specifications, such as clock speeds or memory bandwidth, can lead to bottlenecks, where one card may underperform and negate the benefits of having a second card. In contrast, the idea that both cards must be different models actually goes against the established practices for multi-GPU configurations. Additionally, having separate power supplies for video cards in SLI is not a standard requirement; typically, a sufficient power supply with appropriate connectors is enough to support both cards.