At first I was concerned that there would be so much humidity inside of the capsule from the condensation caused by the temperature difference between the outside and the inside, but I see they've addressed that by replacing the atmosphere with Nitrogen.

I wonder if they've considered an inert fluid to immerse the computers in? If you can use something like Fluorinert, or even high-grade mineral oil, you might be able to make the vessel not required to withstand crush forces as high since the fluid in the capsule can be at the same pressures.

I do love this idea because they can start putting data centers along of submarine cables. One in the middle of the Atlantic, between London and NYC would be great for HFT traders.

I wouldn't be surprised if the NSA wouldn't love something like this too. A whole data center on cross-oceanic cables would provide a lot of infrastructure they can use to analyze traffic in real-time.