RamAir02 Posted December 16, 2010 Share Posted December 16, 2010 Just wondering what optimal BIOS settings are for this combo. Link to comment Share on other sites More sharing options...
RamAir02 Posted December 16, 2010 Author Share Posted December 16, 2010 When I run the set as single channel I have no problems. When I run the set as dual channel I get random freezes and hangs. Sometimes won't even post. I've tried loading default settings as well as 9-9-9-24 Link to comment Share on other sites More sharing options...
Wired Posted December 17, 2010 Share Posted December 17, 2010 Timings / voltage are on the label of the memory. Test one stick at a time in each slot using Memtest86+. Link to comment Share on other sites More sharing options...
RamAir02 Posted December 17, 2010 Author Share Posted December 17, 2010 When testing one at a time all modules pass memtest86+ 4.10. In dual channel setup there are errors and then the pc hangs Link to comment Share on other sites More sharing options...
trackrat Posted December 17, 2010 Share Posted December 17, 2010 If the modules pass Memtest 86+ individually they are probably good. Make sure you have the latest BIOS as this is how Asus improves RAM compatibility. You can also try a few different options to see if they help. You can increase the CPU-NB / VDDNB voltage to ~1.25 V and the RAM voltage to 1.65 V. You can also e-mail Asus tech to confirm that the specific model mobo that you have does not have issues with this specific part number RAM. Link to comment Share on other sites More sharing options...
RamAir02 Posted December 17, 2010 Author Share Posted December 17, 2010 Ok thank you for the help; this is my first build. I will try your suggestions. It is just puzzling since the pc is stable with ram in single channel setup i.e. slots 1 and 3. What is the disadvantage to running the ram in slots 1 and 3 instead of dual channel setup? Link to comment Share on other sites More sharing options...
trackrat Posted December 17, 2010 Share Posted December 17, 2010 Dual channel can offer more data processing bandwidth depending on many factors. For single channel you would typically use only one module. For dual channel you can use 2 or 4 modules. Slots 1 & 3 are often the preferred slots for two DIMMs in dual channel. Single or dual channel is typically a function of how many modules you are using unless you place the two DIMMs in the same channel. Then you'd be in single channel instead of the preferred dual channel mode. Most mobos color code the RAM slots so you know which pair to use for two DIMMs. Link to comment Share on other sites More sharing options...
RamAir02 Posted December 17, 2010 Author Share Posted December 17, 2010 Ok I really hope I can get this figured out so I'm not forced to use my memory in single channel setup. Attached I'd a pic of my mobo. The dual channel slots are next to each other i.e. slots 1 & 2 or 3 & 4. Link to comment Share on other sites More sharing options...
trackrat Posted December 17, 2010 Share Posted December 17, 2010 Yeah some mobo makers physically place the two channels side-by-side and others staggered them. It doesn't matter as long as you place the DIMMs in the correct slots. Link to comment Share on other sites More sharing options...
RamAir02 Posted December 18, 2010 Author Share Posted December 18, 2010 If the modules pass Memtest 86+ individually they are probably good. Make sure you have the latest BIOS as this is how Asus improves RAM compatibility. You can also try a few different options to see if they help. You can increase the CPU-NB / VDDNB voltage to ~1.25 V and the RAM voltage to 1.65 V. You can also e-mail Asus tech to confirm that the specific model mobo that you have does not have issues with this specific part number RAM. Ok so I've upped the DRAM Voltage to 1.64 (intervals of .02V) but I have a question about the CPU-NB / VDDNB voltage. There are multiple options relating to this and I'm not sure which to alter. I have: CPU Voltage CPU/NB Voltage CPU VDDA Voltage DRAM Voltage HT Voltage NB Voltage NB 1.8V Voltage SB Voltage I'm assuming the one I want to increase to 1.25 volts is CPU/NB Voltage, but I don't want to do this to the wrong option, so please clarify. Thanks Link to comment Share on other sites More sharing options...
trackrat Posted December 18, 2010 Share Posted December 18, 2010 Yes correct the CPU/NB voltage is the one you want to up to ~1.25 V. The link below may be useful for a look at the various AMD voltage settings possible? http://sites.amd.com/us/Documents/AMD_Dragon_AM3_AM2_Performance_Tuning_Guide.pdf Link to comment Share on other sites More sharing options...
RamAir02 Posted December 18, 2010 Author Share Posted December 18, 2010 Thank you for the link. I am still trying to learn and am very grateful. Link to comment Share on other sites More sharing options...
trackrat Posted December 18, 2010 Share Posted December 18, 2010 I'm glad to help. Link to comment Share on other sites More sharing options...
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