I think the Topic line says most of it ...
The 2nd table on the page has entries for CEP WUs types A & B, but not the current type C ones.(A bit late, since CEP Phase 1 is about to end.)

While discussing the System Requirements page, I would also take issue with the stated blanket requirement for "An Internet connection with minimum 40kpbs speed". Before getting a broadband connection, I successfully used intermittent 56kb dial-up for many months, but only for a single dual-core machine having a per-cpu throughput close to the current fleet average, and crunching mainly FAAH. The time taken for the WCG data transfers was not a major problem.
Setting out the details of how to calculate a prospective member's data transfer times using a slower connection is probably beyond the scope of the System Requirements page, but you could:
1) add a statement such as "it is possible to use a slower connection, depending on its speed, the throughput of your computer(s), the mix of projects selected, and your tolerance for the extra loading of your connection".
2) provide some idea of the WU cpu times to be expected for a few "reference" machines. Difficult, and this information would need to be updated periodically, but it would make complete the set of data needed for a prospective member to estimate whether joining WCG would use a significant fraction of his ISP's monthly download quota, as well as the total transfer time given his connection speed.