Just because there's a pretty picture and a model number does not mean you can actually get one of these. This design was submitted to OCP in March 2016. There is a specification.
The Qumram has 8 packet ram chips, each with 32M x 16 bits-wide. The memory part number is K4A4G165WD by Samsung.
There is now a data sheet as of September 2017. Info on the opencompute.org site seems to say that there is now a varient with TCAM. Presumably that means external TCAM since it seems there must be TCAM.