I guess it's too hard to actually look up at Mushkin:
<< These Mushkin PC133 modules are designed for motherboards based on the Intel BX, GX, 810,820 and Apollo chipset (As well as some leading chipsets). The synchronous design allows for precise interaction with the system clock and a constant cycle of transactions between the dual in-line memory module and the main system board. Mushkin recommends these for budget systems that will be clocked at any speed over 100mhz and up to 133. >>
The spec listing also denotes that this is 3-3-3 memory, ie. it's CAS 3. Also, the price is now $45.
The CAS 2 Crucial memory modules are a much better deal, but they are sold out right now ...