tib-g Posted July 11, 2007 Share Posted July 11, 2007 Hi, I have an Asus P5N-E SLI motherboard, Core 2 Q6600 processor, and have just installed 2 sets of TWIN2x4096-6400C5DHX pairs (total 8GB). (Running Windows XP x64). Just wondering what the correct timings, voltages and bus speed is for such a set up. I suspect that the memory will need higher than normal voltage because of the fact that all of the memory slots are full with large capacity modules. Are there any other BIOS settings that I need to change to ensure the stability of the system? Thanks! -Tib. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted July 11, 2007 Corsair Employees Share Posted July 11, 2007 Just load setup defaults and then set the memory Voltage to 2.0 Volts and set the timings to Cas 5-5-5-18 manually and then test the modules with the Voltage set to 2.0 Volts! Then test with http://www.memtest.org to be sure! But set Legacy USB to Disabled when running any memory test, Also check the Command Rate it set to 2t and the TRC is set to 24. Link to comment Share on other sites More sharing options...
tib-g Posted July 12, 2007 Author Share Posted July 12, 2007 thanks very much RAMGUY. MemTest passed with no errors. I have some engineering applications that I want to run on it to be sure it is all working smoothly. will advise. -Tib. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted July 13, 2007 Corsair Employees Share Posted July 13, 2007 NP Please do let me know how you make out! Link to comment Share on other sites More sharing options...
tib-g Posted July 22, 2007 Author Share Posted July 22, 2007 sorry for the late response, i was away all last week. not so good, I'm afraid. the computer is stable under basic functions. but when I run anything particularly taxing, it crashes, well, stops responding; i can still see the screen, but the computer has stopped doing anything. i had a temp. monitor window open and the last temperatures shown were 54 degC for the CPU and 48 degC for the motherboard. this seems well within normal limits. is there a less aggressive memory setting i can try? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted July 23, 2007 Corsair Employees Share Posted July 23, 2007 Yes try it at DDR667 and what version of the O.S. are you using? Link to comment Share on other sites More sharing options...
tib-g Posted July 23, 2007 Author Share Posted July 23, 2007 DDR667 at the same timings (5-5-5-18)? i'm running windows xp pro x64 edition. it recognises all 8gb. thanks again! Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted July 23, 2007 Corsair Employees Share Posted July 23, 2007 Yes DDR667 @ Cas 5-5-5-15 at 1.9-2.0 Volts and make sure if Command Rate is listed its set to 2T Link to comment Share on other sites More sharing options...
tib-g Posted July 27, 2007 Author Share Posted July 27, 2007 so far so good. since reducing ram speed to DDR667, system has been very stable. i will let you know if that changes. thanks again for your help! Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted July 27, 2007 Corsair Employees Share Posted July 27, 2007 No Problem and please do let me know! Link to comment Share on other sites More sharing options...
tib-g Posted August 8, 2007 Author Share Posted August 8, 2007 thanks ramguy, the system hasn't missed a beat since I made the change. I'm a little disappointed that the system can't run stably at the higher speed, but its still pretty quick. cheers! Link to comment Share on other sites More sharing options...
Yellowbeard Posted August 8, 2007 Share Posted August 8, 2007 thanks ramguy, the system hasn't missed a beat since I made the change. I'm a little disappointed that the system can't run stably at the higher speed, but its still pretty quick. cheers! With the load of 4 DIMMs on the NB, I'd suggest upgrading the cooling on that specific board. Also, you may be able to clock the MOBO back up to DDR800 speeds with an increase on your NB voltage. But, I would not try that unless you improve the cooling. Mine runs well with the NBv at 1.56v. Link to comment Share on other sites More sharing options...
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