joelschlegel Posted March 8, 2005 Share Posted March 8, 2005 Ram Guy... I need your help! This is driving me crazy..... System Specs: Athlon 64 - 3500+ Abit AV8 (flashed to latest version... 19) BFG 6800 Ultra OC 550W PS 2-200 Gig maxtor drives I have recently added another gig of corsair XMS-3200-CP2 (Twinx) memory (for a total of 2Gig) to my system and im now experiencing spontaneous reboots. So the system has 4 DIMMS XMS-3200C2PT. I purchased 2 Twinx paks of 1 Gig (4 512M dimms). The problem seems to come into play when all 4 memory slots are populated and I try to set the DRAM up so that it runs at DDR400 (using either SPD or MANUAL settings for DRAM) When setting the DRAM config to "auto" on the MB the system seems to run fine, however, it sets the memory bus speed to 170Mhz (DDR370) according to memtest86 (v1.5). This seems strange to me since the memory is rated as DDR400 (following tests had the DRAM setting to SPD) I tested each DIMM separate with memtest86 and all was fine Then I tested 2 (new) DIMMS together... and that test was fine (in 1st 2 memory slots). Memtest reported memory bus @ 202Mhz / DDR 404 I boosted the DRAM voltage to 2.7 as you suggested to others on this forum When all 4 slots are populated, and put the mb setting to anything other than AUTO, I get failures on test #5, 6 or 7. There were huge chunks of bad areas (330000 errors) on pass 1. the memory addresses were all over the place that were bad... seemed spread out over all modules. Questions: a) Is there any 'technical' reason why the memory bus speed would drop to 166Mhz (170 Mhz ) / DDR333 (DDR 370) when all 4 DIMMs are installed? b) any recommendations to determine if it is a RAM issue or MB issue? c) any recommendations on how to determine which module is bad Other notes: System has rebooted 2 x when all 2 gig is installed and the MB is set at DRAM "Auto". If I put it at either SPD or MANUAL and set it to DDR 400 then the system isn't stable at all and reboots frequently. (when only 1 gig is installed, the system is stable). If I left any pertinent information out... I can provide it.. Thanks in advance for your assistance! Link to comment Share on other sites More sharing options...
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