[Sanddancer]

They're not even Grid K520s, they're K5000s. They've only got 4 gigs of RAM each, instead of the 5 gigs for teslas or 8 gigs for the K520s. This sounds a lot like they're trying to pull a little bit more value out of their current gpgpu rigs as they slide further and further into obsolescence.

Edit:

Looking again at the pricing and specs, it looks like they're just letting you have a full gpgpu box, instead of the multi-tenant box they previously offered where you share with three other people.

[moonbug]

Well, the K520 is a single AIB with two discrete GPUs on it, each being a GK104 with 4GB (which seems to match the spec of the K5000). A g2.2x instance has a single GPU - ie half a K520 - assigned to it.

Your claim surprised me enough to stand an instance up and take a look for myself. Sure enough, they report having 4 K520 devices.

[Sanddancer]

Gotcha. I was looking at the spec sheets of the various instances, and could only find that they are GK104s. I didn't think to look to see if there was a dual GK104 board, because video card makers tend to do that only for their high end boards. Definitely makes sense, though, for the density Amazon would want to run in.