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2 pairs of TW3X2G1600C9DHX on Asus P5Q3. What's the recommended tRRD and tRFC?


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first off let me clarify a little detail.


I am using two sets of TW3X2G1600C9DHX modules on this mainboard, but I did not expect them to reach 1600 anyway. I am perfectly happy with them being stable at 1380 right now. I am also aware that those modules were not certified to run in 4 pieces on this board.


It seems to me that ASUS' defaults are screwed. Once you change the BIOS from AUTO to MANUAL memory settings, it would show me 5-5-5-15-5 as defaults. This sounds so very much like DDR2 defaults!


An experienced user like me would set the first four to something like 9-9-9-24, but since the tRRD (RAS to RAD delay) value isn't stored in the SPD chip, the ASUS BIOS would default it to 5 again.


And exactly that looks extremely off to me. As I learned now, a value of 8-10 or even more should be suitable.


Hence my question,


What does Corsair (TheRAMguy?) recommend for tRRD and tRFC for the P5Q3 Deluxe?


Does it make any sense to have 5 as default for tRRD, or did ASUS screw up?


Another thing:


One of my two sets of modules came with an XMS profile in the SPD, and the Part Number field programmed to CM3X1G1600C9DHXIN.


I know that this is not an issue, it just irked me. How come?

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