Introducing Game Mode
Making a hugely multi-core CPU that’s ready for gaming is a challenging effort, because most PC games are designed for the typical 4-8 core processor. When greater core counts enter the picture, things can get squirrelly: poor thread scheduling can reduce performance, or (more rarely) the game may simply not run at all. The Threadripper team at AMD spent a long time thinking about how we can help our customers avoid these scenarios altogether, and we call it Game Mode.
Game Mode is a new feature in AMD Ryzen™ Master that reconfigures the platform in two key ways:
- It temporarily disables half of the CPU cores, which turns the AMD Ryzen Threadripper 1950X into an 8C16T device (like the AMD Ryzen™ 1800X) and the 1920X into a 6C12T device (like the AMD Ryzen™ 1600X). For the truly technical, this is a 4+4 CCX configuration on one die. This ensures the game encounters the number of cores it was truly designed to handle. Please note that Game Mode does not disable SMT.
- We tell the OS to use a Local Mode (NUMA) memory, which keeps a game and its memory footprint inside one CPU die and the locally-connected DRAM. This minimizes several key latency points in the system, which most games love.
Together, these changes can make a big difference for the games that weren’t designed with a beastly 12-core or 16-core processor in mind! When you’re ready for heavy threaded workloads, switching back to “Creator Mode” in AMD Ryzen Master effortlessly reverts these changes.