Surely they'd run this on a system without a fan? I'd say immersed in liquid nitrogen to minimise thermal noise and powered through an ultra-low noise, DC, batt

Surely they'd run this on a system without a fan? I'd say immersed in liquid nitrogen to minimise thermal noise and powered through an ultra-low noise, DC, battery-only supply, and the whole thing inside an independently Earthed faraday cage. If not, all the effort on the memcpy is going to waste.