Microsoft CASO Makes dGPU & iGPU Switching Doable on Hybrid Laptops With out MUX , Works Throughout AMD, NVIDIA & Intel Chips

Microsoft has introduced a model new function for Home windows often known as CASO which helps hybrid iGPU & dGPU switching on laptops throughout all three GPU distributors with out the requirement of MUX.

Microsoft CASO Will Let Hybrid Laptops Swap Between iGPU & dGPU Extra Effectively With out Requiring Proprietary Options

In line with Microsoft, CASO or Cross Adapter Scan-Out is an answer devised for platforms that use a hybrid GPU configuration which incorporates each iGPU and dGPU. Laptops which embody each iGPU and dGPU will use the iGPU to run the show and can be used for lightweight duties & the dGPU is liable for the heavy lifting similar to gaming and different rendering & creation duties.

Fashionable-day laptops use proprietary options to completely make the most of the {hardware} onboard and to modify between the iGPU and dGPU based mostly on the workload. NVIDIA has Superior Optimus whereas AMD’s answer comes within the type of Good Entry Graphics. Each options use a MUX (Multiplexer) chip that switches between the iGPU and dGPU.

However each of those are proprietary options and there might be circumstances the place sure distributors do not help such options. For instance, AMD has used Good Entry Graphics on its premium merchandise below the “AMD Benefit” program and NVIDIA additionally makes use of these options throughout its personal ecosystem of laptops. So what if you do not have an NVIDIA Optimus or AMD Good Entry Graphics laptop computer?

That is the place Microsoft’s CASO is available in. With no MUX change, two copies of a rendered body might be despatched out. One from the dGPU to a shared useful resource and the opposite from the shared useful resource to the iGPU (handles show). This instance contains gaming and whereas it really works, it is not environment friendly and results in decrease FPS and better latency. With a MUX change and the identical gaming workload, the laptop computer can change the show connection to the dGPU too in order that it would not move by way of a shared useful resource with the iGPU. This maximizes efficiency by utilizing the GPU that’s greatest for the duty the laptop computer is working.

With CASO, you are not simply eliminating the shared useful resource but in addition eliminating the MUX change requirement. CASO requires only one copy of the rendered body which is straight scanned out to the show, leading to higher efficiency, decrease show latency, and higher battery occasions. As per Microsoft themselves, CASO is supported throughout a variety of {hardware} and helps each DX11 and DX12 titles. Inside checks have proven a mean of 16% FPS enhance, 27% latency discount & 45% lower in Home windows TDR (Timeout Detection & Restoration Occasions) with CASO enabled.


“As a testomony to our long-standing partnership and dedication to expertise innovation, collectively we made hybrid graphics higher for players, delivering extra frames per second and decrease latency. CASO is on the market beginning on AMD RyzenTM 6000 Collection processors with RadeonTM graphics, probably the most superior processor in its class for high-end gaming on ultrathin notebooks.”


“Intel strives to enhance gaming efficiency and CASO delivers such enhancements with lowered body latency and elevated FPS with our built-in and devoted GPU choices”.


“All at the moment supported NVIDIA GeForce GPUs help CASO beginning with driver model r515_00. The most recent GeForce Sport Prepared Driver is on the market for obtain right here.”

Microsoft’s CASO requires a minimum of an AMD Ryzen 6000 CPU and Intel Iris Xe Graphics with WDDM 3.0 or above. You possibly can attempt CASO for your self if you’re working a modern-day laptop computer.