There are no GPUs in the rack, so pretty bad, haha.

We certainly understand that there's space in the market for a GPU-focused product, but that's a different one than the one we're starting the company off with. There's additional challenge with how we as a company desire openness, and GPUs are incredibly proprietary. We'll see what the future brings. Luckily for us many people still desire good old classic CPU compute.

Would pass-through to VM work?

At $work I'm running SmartOS servers with GPU passing to a ubuntu bhyve for the occasional CUDA compute and it works wonderfully. Wonder if similar could be possible with Helios?

The software interface isn't the problem: the problem is that there are no physical GPUs in the product. There's nothing to pass through.