Jigensan Posted January 17, 2008 Share Posted January 17, 2008 My MB is an ASUS P5N32E SLI Plus, and the ram I have is the CM2X1024-6400 (800MHz 5 5 5 12), 2 sets, so a total of 4 1GB sticks. I recently decided to upgrade my ram from 2GB to 4GB and ran into a strange problem. Whenever I add the 4th stick, the computer hits the starts the boot screen but doesn't display anything past the bios revision, and hangs. I'm unable to entire bios, nor will it continue booting from that point. If switched the sticks and it doesn't seem to matter which stick is in there, it won't boot. The system was perfectly stable at 2GB, and seems to be perfectly stable at 3GB (though it's been less than 24 hours since I installed it). Am I stuck because I didn't buy the recommended RAM? Or is it more likely I have an MB with a bad memory slot? Link to comment Share on other sites More sharing options...
Jigensan Posted January 17, 2008 Author Share Posted January 17, 2008 Minor update. Noted the version on the old sticks is 5.1, and the new is 7.3. Not sure if that makes a difference at all. Also I swapped the positions of the old and new sticks and I couldn't even get it to post. Does this mean I got a bad set? Link to comment Share on other sites More sharing options...
Yoxxy Posted January 17, 2008 Share Posted January 17, 2008 You need to increase NB voltage and FSB Termination/CPU VTT Voltage. 1.40 for all 3 of them should do the trick. It is a problem with the 680i chipset. Link to comment Share on other sites More sharing options...
Jigensan Posted January 17, 2008 Author Share Posted January 17, 2008 You need to increase NB voltage and FSB Termination/CPU VTT Voltage. 1.40 for all 3 of them should do the trick. It is a problem with the 680i chipset. I appreciate the reply. I did a little searching before posting and found someone suggested the following settings to fix the problem. Memory Voltage: 2.0V 1.2V HT: 1.25V NB Core Voltage: 1.4V SB Core Voltage: 1.55V CPU VTT Voltage: 1.25V Timings TCL: 5 TRCD: 5 TRP: 5 TRAS: 12 Command per Clock: 2 TRC: 24 So I've bumped the voltage a little bit already. Also the chipset is a 650i, not 680 - so as dumb as it sounds I'm not sure how high is safe to push the CPU VTT Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 17, 2008 Corsair Employees Share Posted January 17, 2008 I would only add a little voltage to keep the system stable, but if its not stable then try setting the memory frequency at DDR667. Link to comment Share on other sites More sharing options...
Jigensan Posted January 17, 2008 Author Share Posted January 17, 2008 I would only add a little voltage to keep the system stable, but if its not stable then try setting the memory frequency at DDR667. I put the voltage back at stock and dialed down the frequency and it booted up just fine. I'm not experienced with memory tweaking so there's no way I would have thought of that. Thank you very much! Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 17, 2008 Corsair Employees Share Posted January 17, 2008 NP please let me know if you have any more questions! Link to comment Share on other sites More sharing options...
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