Rick66 Posted December 28, 2005 Share Posted December 28, 2005 Hi, I have an ASROCK P4S55FX+ with 2GB installed (2 1GB modules). I wanted to increase the amount of memory and purchased a Corsair 2GB Memory Module Kit (two 1GB modules), ValueSelect, VS2GBKIT400C3, each module is labeled VS1GB400C3. I have not opened the package of new memory yet, and wanted to get a couple questions answered before opening the package, so that I may return it if I need to. The P4S55FX+ manual states the motherboard takes 3.5GB max memory. May I install these additional two 1GB modules? Will the motherboard accept them, but only address 3.5GB of the 4GB? (Is the other 0.5GB for addressing other things on the motherboard?) Or, must I buy a kit with 2 0.5GB modules to go with the existing 2 1GB modules? If I can install all 4 1GB modules, how would I best configure my BIOS? The already installed 2 1GB modules are matching and running in dual channel mode. I cannot tell the make or model of the already-installed 2 1GB modules. Is it true that I can install the two new 1GB modules into the remaining slots and still run the motherboard in dual channel mode? (I know the existing 2 modules are in identically-colored slots and the two new modules should be installed into the remaining 2 identically-colored slots.) My BIOS currently has the following settings: DRAM Access Mode: [Dual Channel] DRAM CAS Latency: [Auto] DRAM Precharge Time: [Auto] DRAM RAS to CAS Delay: [Auto] DRAM ACT to Precharge Delay: [Auto] DIMM1, 2 Address/Command Rate: [2T] DIMM3, 4 Address/Command Rate: [2T] DIMM1, 2 FWDSDCLK Delay: [Auto] DIMM3, 4 FWDSDCLK Delay: [Auto] DDR IO Input Termination: [170 Ohms] After installing the new Corsair memory, how should I set these settings? Thank you very much for any help you can give. Rick Link to comment Share on other sites More sharing options...
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