Today, this CNET article talks about the servers that Google uses in their modular datacenters.
This picture shows that the motherboard is a Gigabyte GA-9IVDP:
This post on Datacenter Knowledge has video footage of the example server.
Some Google searches reveal this forum thread where someone talks about receiving a system built out of this same motherboard as part of his Google signing bonus.
Has Google been using the same model of servers for the past three years, or were they showing off an older revision?
I can understand how they’d still be using them if a large order of a custom design was done with Gigabyte, as that model (the GA-9IVDP) uses a custom power supply (it only supplies 12V instead of 12V and 5V) and does not appear to be for sale to the general public.
This article from 2006 mentions Google having talks with Asustek, Gigabyte, and MSI for the manufacture of 4-way boards. It also talks about a large order that Google previously placed with Gigabyte; I’m guessing that the motherboard shown off today is from that earlier two-way order and is not the cutting edge of what they’re deploying now.
This site claims that the current version of the Google Search Appliance is built around the same basic motherboard and setup.