I did try the one-stick-at-a-time approach with the server, and it turns out that one of the sticks were in fact, not 14900L, rather 10000-something-L. So my friend who gave me the Modules and helped me with them didn't know this, and assured me that they were all the same.So, long story short, one module clocked them all down. Many thanks for your help in this matter, and I'm sorry for taking up your time!
Hi everyone! I'm having an issue with Quad-Rank RAM-modules that should be able to go up to 1866Mhz but are clocked down to 1333Mhz. Memory Modules: I got 12 of them from a friend of mine, and they are specified at 1866Mhz. They are however Quad-Rank modules that are load-reduced but that shouldn't be a problem. I have tried to just insert one, two, and of course filled A1-A4 and B1-B4 but no dice. (As per Dells recommendation for best performance).Set performance mode on the server (usually have performance per OS). And before anyone asks, yes the CPU should support speeds of 1866Mhz: I have been looking all over for a good answer to this topic for a while now, and can't seem to find a reliable answer to why it's not working, and if it should be working.Firmware updates always unlocks more potential in these old-servers but the documentation does not. There might even be another update I'm not aware of that I can try, but I haven't found one that's newer. I've been checking this link for information, but it hasn't really helped me out. I'm probably just not reading it correctly.[URL] I'm thankful for all the help I can get on this matter 
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