I know a guy who was unstable at 133 MHz. he knew it was his SDRAM, but was looking to cheap out. I talked him into spending a little more for the Mushkin Siemens Infineon PC133 and now he's totally stable at 150 MHz. It's good stuff. And, yes, it is CAS2. Apacer sells it a little cheaper, but I don't know if there DIMM boards are as good as Mushkin's are. A low quality DIMM board can have a big affect on how high you get.
First of all, Thank You to everyone for your input...
Dave_B - Are you using the Siemens Infineon 133? If so what kind of setup are you using? We just set up a 600E with Corsair 133 but I was looking at the Mushkin Siemens Inf. 133 to set up another 600E and OC it to 800. I just remembered that I posted a topic several days ago about the best memory for the 600E and you had recommended the same module. One question ... would it be possible to run the Mushkin Siemens Infineon at 2.2.2? I went to their website and saw the High Performance stuff that runs 2.2.2 and of course the EMS HSDRAM. I would much rather save the 40 - 70 bucks on the Infineon if it works just as good. It seems that you have already had great experience with this module. Please let me know at your convenience. Thanks.
Hey I just got done reading AnandTech's PC133 roundup and I'm impressed at what I found. Although they don't have MUSHKIN Siemens Infineon PC133, both other Infineon modules (Corsair and Memman) held up stable all the way up to 146Mhz/CAS 2! Not too bad!
You'd have to go for the Muskin 128 MB High Performance w/ Mosel REV2 PC133 to guarantee 222. But, you'll certainly be able to run the Infineon at CAS2 at 133 MHz. Corsair is not too shabby either, especially their Siemems Infineon stuff.