edhand Posted March 15, 2009 Share Posted March 15, 2009 I just put together a new system with a Asus M4N72-E main board and TWIN2X4096-8500C5DF. Everything runs fine with the memory at 800MHz, but when I try to manually set it to 5-5-5-15-2T @ 1066, the system is unstable and won't boot. It got so bad on one attempt that I had to reset the bios with the motherboard jumper. I looked at the settings in this link (What are the correct timings for My Dominator Module? ), but the options there and in my bios are slightly different. Any help would be appreciated. Link to comment Share on other sites More sharing options...
DerekT Posted March 15, 2009 Share Posted March 15, 2009 Phenom and Phenom II have issues with high end memory. I advise those who purchase the AMD processors to also purchase mid-line memory if they want to ensure that the system will work correctly. Did you set your DRAM voltage to 2.1v? Link to comment Share on other sites More sharing options...
edhand Posted March 15, 2009 Author Share Posted March 15, 2009 I did set it to 2.1. This memory was on the QVL for my mainboard, and I (I think) put them in the correct slots as the Phenoms can only run 1 module per channel @ 1066. Link to comment Share on other sites More sharing options...
DerekT Posted March 15, 2009 Share Posted March 15, 2009 The word in reality is "Should" because it happens that they sometimes just refuse to run with that which they support. I did set it to 2.1. This memory was on the QVL for my mainboard, and I (I think) put them in the correct slots as the Phenoms can only run 1 module per channel @ 1066. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted March 16, 2009 Corsair Employees Share Posted March 16, 2009 I don't have a problem replacing the memory for you but from what you have posted I would suspect the MB BIOS or the CPU may have some problem, can you test them in a known working system to be sure. Let's get them replaced, please use the On Line RMA Request Form and we will be happy to replace them. Link to comment Share on other sites More sharing options...
edhand Posted March 16, 2009 Author Share Posted March 16, 2009 The system is working, just not with the memory @ 1066. I suspect that either I'm changing the wrong settings to get it to run at the EPP settings, or not changing everything I need to. I was first looking to verify what settings in this particular bios I should be changing. Link to comment Share on other sites More sharing options...
Yellowbeard Posted March 16, 2009 Share Posted March 16, 2009 The system is working, just not with the memory @ 1066. I suspect that either I'm changing the wrong settings to get it to run at the EPP settings, or not changing everything I need to. I was first looking to verify what settings in this particular bios I should be changing. Keep in mind what Derek pointed out. The jury is still out on Phenom II but, most Phenom users cannot get anywhere close to 1066. You may simply not be able to run this speed with an AMD CPU/IMC. Link to comment Share on other sites More sharing options...
edhand Posted March 17, 2009 Author Share Posted March 17, 2009 Found the problem. Turns out that on Asus boards, in order to get 1066 settings the memory needs to be inserted in A2 and B2, doesn't work in A1 B1. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted March 17, 2009 Corsair Employees Share Posted March 17, 2009 Good news and thanks for letting us know! Link to comment Share on other sites More sharing options...
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