What Is Nvidia’s Resizable BAR? How Does It Work?
Nvidia’s Resizable BAR is a technology that has been designed to improve the performance of graphics processing units (GPUs) by allowing the processor to access the entire memory of the system’s CPU more effectively. It is a feature that has been made available in the more recent Nvidia RTX 3000 series graphics cards, and certain GPUs from the previous generation.
Essentially, Resizable BAR creates a larger communication pathway between the CPU and the GPU by removing the current limitations that limit the GPU’s access to memory. When the CPU sends a request to access the system’s memory, the Resizable BAR allows the GPU to also request and access the system’s memory directly. This means that data can be transferred faster and more efficiently between the CPU and GPU, ultimately leading to better performance.
For example, when playing a game, CPU and GPU work together to process the game’s data. The CPU is responsible for handling background processes, game logic, and anything that happens outside of rendering the game. Meanwhile, the GPU is responsible for rendering the game’s graphics. Due to the limited access that GPU has to the CPU’s memory, it can cause a bottleneck in communication – this delayed communication eventually shows up in the form of lower frame rates, stuttering, and other performance issues.
Resizable BAR technology works by testing memory access patterns, detecting bandwidth bottlenecks, and reducing overhead latencies. By giving the GPU more direct access to CPU memory, the process of transferring data can be done at a faster rate. This means that gameplay is smoother, loading times are faster, and graphics rendering can be done more efficiently.
To take full advantage of Resizable BAR, a few things need to be in place. First, your motherboard needs to support this technology, which requires a hardware and architecture update. Secondly, your graphics card must support the technology – currently, the Nvidia RTX 3000 series gpu, along with a few others, support the feature. Lastly, you must have a compatible CPU, such as an Intel 10th or 11th gen processor, Ryzen 5000 series processor, or others that support resizable bar.
In summary, Nvidia’s Resizable BAR is a technology designed to improve the performance of GPUs by providing better access to the system’s memory. By improving the transfer of data between the CPU and GPU, gamers can expect improved performance, resulting in smoother game-play, faster loading screens, and improved graphics rendering. If you’re in the market for a new GPU, check to make sure it supports this feature, and ensure that your other components also support this technology to take full advantage of the benefits it provides.