NavyMan Posted November 3, 2007 Share Posted November 3, 2007 I have one set of TWIN2X2048-6400 and one set of TWIN2X2048-6400C4. My problem is that when I put both sets in my system it will not complete a boot. If I take either set out everything works fine. Can I not use them together or do I need to make some sort change in the bios so they will work together? They are being installed into a ASUS P5SN32-SLI-SE-Deluxe. Thank you for any help you can give. Link to comment Share on other sites More sharing options...
DerekT Posted November 3, 2007 Share Posted November 3, 2007 It's never a good idea to mix and match DRAM in systems. It's always a dice throw and you have different IC's on each set kit. Install 1 set (6400c4). You can try to set the DRAM to 667Mhz and the Vdimm to 2.1v and 5-5-5-15 timings. Set to a command rate of 2T. Shut the system down and insert the second set of sticks. Restart. Results? Link to comment Share on other sites More sharing options...
NavyMan Posted November 4, 2007 Author Share Posted November 4, 2007 Thanks DerekT but the system did not like that at all. Any other suggestions anyone? Link to comment Share on other sites More sharing options...
NavyMan Posted November 4, 2007 Author Share Posted November 4, 2007 Things seem to be running now with the following settings: DRAM to 533Mhz and the Vdimm to 1.95v and 4-4-4-12 timings and command rate of 2T. System will not boot if I try to set the DRAM to 633 or the Vdimm above 1.95v. I will let run like this and see what happens. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 5, 2007 Corsair Employees Share Posted November 5, 2007 Things seem to be running now with the following settings: DRAM to 533Mhz and the Vdimm to 1.95v and 4-4-4-12 timings and command rate of 2T. System will not boot if I try to set the DRAM to 633 or the Vdimm above 1.95v. I will let run like this and see what happens. You can always memtest this configuration. Link to comment Share on other sites More sharing options...
NavyMan Posted November 6, 2007 Author Share Posted November 6, 2007 Ran Memtest86+ for over 10 hours with 0 errors. So it looks to be pretty stable. :): Link to comment Share on other sites More sharing options...
DerekT Posted November 7, 2007 Share Posted November 7, 2007 I would say so. Well done :) Link to comment Share on other sites More sharing options...
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