<< Would the Infineon still be better than the 7E CAS2 modules? >>
The answer is yes. I tried one Crucial PC-133/CL2. The performance was very disappointing. Never go back for a second trial. The Mosel Vitelic, KingMax KTI and Infineon PC-133 module are all satisfactory for me. All these SDRAM use 7.5 ns memory chips, Crucial is the only manufacturer who labels their module as CL2.
CL or CAS Latency is the amount of time in nanoseconds or clock cycles between a request to read the memory, and when it is actually output. SDRAMs are typically referred to as CL2 or CL3, with CL2 parts being faster.
The user selects the CL in the motherboard BIOS. If the SDRAM is fast enough, it will run stable in CL2. Most of today's SDRAM comes with a EEPROM call SDP (Serial Presence Detect). The SDRAM module manufacturer load the timing information into this SPD ROM. The user can allow the motherboard to read the SPD and set the timing or CL accordingly. The user override the SPD settings when he wants to overclock.
<< However, the manufacturer's SPD timing does not necessarily represent the SDRAM's true speed. For example, Crucial rates their SDRAM using 7.5 ns chips as PC-133/CL2. The Crucial has little overclock margin and most user cannot run much above 140 FSB. On the other hand, the Infineon PC-133/CL3 SDRAM also uses 7.5 ns chips and many users have reported running stable at 150 FSB @ CL2 and faster. >>
DISCLAIMER: The above comment is based on only one stick of Crucial PC-133/CL2 and 2-5 sticks each of the Mosel Vitelic, KingMax KTI and Infineon PC-133 modules. Your mileage may vary.