hned Posted January 30, 2006 Share Posted January 30, 2006 :confused: Based on other threads and posts, I am led to believe that the best upgrade path of my 2-yr-old system is to replace the two existing CMX512-3200LLPRO (a matched pair) with two CMX1024 (in the form of a matched pair), instead of adding another pair of CMX512-3200 to fill all four memory slots. (If this conclusion is incorrect, please let me know; it would certainly cost less to simply add another pair of CMX512-3200LLPRO and fill all four slots.) My initial upgrade attempt was to replace the existing pair of CMX512-3200LLPRO with TwinX2048-3200C2/DDR400. Leaving my BIOS settings at "auto" (which worked well with the pair of CMX512-3200LLPRO) seems to result in instability reflected by odd new behaviors within several application software programs I frequently run. I ran MemTest and no errors were displayed, so the memory itself is fine. Based on feedback from customer comments at NewEgg for this particular memory, I went into the system BIOS and manually set the voltage to 2.75V and the timings to 2.5-3-3-6. Unfortunately, the "manual" option within the BIOS also requires that I manually set such items as the "CPU External Frequency" (choosing from a range of 100 to 400), and the "DRAM Frequency" (choosing from a range of 266 to 400 MHz), both of which were previously functioning on "auto". I don't know what values to select (HELP!?!?) As a "newbie" in this technical area, I would prefer my system simply operate on full "auto". Should I exchange the TwinX2048-3200C2 for TwinX2048-3500LLPRO in hopes that I can keep all the BIOS settings on "Auto", as they were successfully running before on the low-latency 1 GB pair of CMX512-3200LLPRO? Or, if I upgrade instead to the 2 GB TwinX2048-3500LLPRO, would I still run into the same stability problems if I attempted to maintain the "Auto" settings in the BIOS that have worked so well in the past with the 1 GB TwinX1024-3200LLPRO? Finally, if you think I should keep the TwinX2048-3200C2, what should all the above mentioned "manual" setting in my BIOS be? Somehow, I need to upgrade to 2 GB of RAM while maintaining a stable and reliable computer. Please provide me with your guidance and insight. Thanks! Link to comment Share on other sites More sharing options...
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