Thread by @neelbedekar

Very excited about both the Quest 3 reveal, and our Quest 2 CPU/GPU performance increase.

The perf increase has been my(and a few coworkers') main project recently. And a perf increase is only useful if you can *utilize* the extra perf!

Here's everything devs need to know.🧵

Let's start with the CPU perf win. There are 2 key features here:
First, for every app, we now give 26% more per-core CPU perf. The win can be used in many ways:
* For some devs, this will be an instant 72->90Hz upgrade.
* For others, significantly more avatars, physics, AI, etc.

But the 2nd CPU feature here can be an even bigger win. It's a "dual-core mode": your app can choose to only consume 2 CPU cores, not the usual 3, thereby giving an additional 19% CPU perf.

If your app only needs 2 CPU cores, you now get a whopping 45% more CPU perf than before!

To be clear: multithreading is great. It's better to multithread and consume all 3 cores, enjoying a 26% perf expansion.

But MT can be extremely challenging for game engines at times. So if your workload is very single-threaded, and only needs 2 cores, you now get a 45% CPU win!

Some games are unbalanced in the amount of main thread CPU, and are thus a great fit for dual-core mode. Others use many threads, will need all 3 cores.

To recap CPU: it's a global 26% perf win, and if you're extremely single-threaded, you can get a 45% win in dual core mode.

Now, GPU. The GPU win is less than for CPU, but still substantial. It's an up to 19% win over the base frequencies that we gave you when Quest 2 released.

But with 1 key detail: the frequencies can now be dynamic. This is where dynamic res comes in.

Every dev should read our upcoming docs pages to get the full details, but in a nutshell: enabling dynamic res is key to truly utilize the GPU win, so we're tying the 2 features together. Enable dynamic res, to get the up-to-19% GPU perf win.

So, to recap. It's a 26-45% CPU win. Hopefully we'll see more 90Hz apps, or better physics/AI/etc, to consume the CPU.

With GPU, most of the win will be consumed via dynamic res. Feedback is welcome on our integration.

Can't wait to see new Quest 2 games utilizing the compute!