Reubs Posted October 24, 2005 Share Posted October 24, 2005 Hi Just built a new system around the following: ASRock 939 Dual SATA 2 (Bios rev v1.2) Corsair TWINX1024 XMS3200XL AMD Athlon 64 X2 3800+ Enermax Noisetaker 485W Installed fine but with memory at Auto configured at DDR333 2.5,2,2,5 When I manually configure to DDR400 2,2,2,5 I get BSOD on windows startup. I tried setting DRAM voltage to high but it made no difference. From reading other posts, it looks like I am not alone with this combination of MB and mem with this problem but I don't see any resolution. Anyone have any suggestions?? Link to comment Share on other sites More sharing options...
kitch9 Posted October 24, 2005 Share Posted October 24, 2005 Hi Just built a new system around the following: ASRock 939 Dual SATA 2 (Bios rev v1.2) Corsair TWINX1024 XMS3200XL AMD Athlon 64 X2 3800+ Enermax Noisetaker 485W Installed fine but with memory at Auto configured at DDR333 2.5,2,2,5 When I manually configure to DDR400 2,2,2,5 I get BSOD on windows startup. I tried setting DRAM voltage to high but it made no difference. From reading other posts, it looks like I am not alone with this combination of MB and mem with this problem but I don't see any resolution. Anyone have any suggestions?? It will run at CL2.5 DDR400 with 1T Timing. It is specified I believe to run at 2.5 on AMD boards. Link to comment Share on other sites More sharing options...
RJLeong65 Posted October 24, 2005 Share Posted October 24, 2005 It will run at CL2.5 DDR400 with 1T Timing. It is specified I believe to run at 2.5 on AMD boards. Not quite. The 3200XL is specified to run at CAS 2 on all systems - Intel or AMD. However, that does not mean that an individual motherboard will like such tight timings. Many budget motherboards hate being run at 2-2-2-5-1T timings; they prefer 2.5-x-x-x or 2-3-3-x timings for better stability. If the ASRock motherboard cannot run the 3200XL series modules stably at rated timings, then a better choice for Corsair memory would be the 3200C2 series, which is guaranteed to run at CAS 2-3-3-6-1T timings on current-production motherboards (although you will have to manually set the CAS and RAS timings in order to attain the tested values; otherwise, the 3200C2 will run at JEDEC-standard 3-3-3-8 timings). Link to comment Share on other sites More sharing options...
Reubs Posted October 24, 2005 Author Share Posted October 24, 2005 Thanks guys, But I bought the memory on the basis that it was one of the Corsair recommended choices for the Asrock board, should it not then run at the specified timings? And why does it not auto configure at the right speed and timing? Link to comment Share on other sites More sharing options...
RJLeong65 Posted October 24, 2005 Share Posted October 24, 2005 And why does it not auto configure at the right speed and timing? That is because some motherboards have SPD auto detection disabled by default. Abit and several other motherboard manufacturers are notorious for defaulting to manual timings and speed selection after the optimized BIOS defaults (aka "Load Setup Defaults") are loaded. Link to comment Share on other sites More sharing options...
Reubs Posted October 25, 2005 Author Share Posted October 25, 2005 Ok Last night I played with the Bios, started with slow setting and ended with the following : Cool'n'quiet Disabled DRAM voltage High Set memory to DDR400, 2.0, 2.0, 2.0, 5, 1T Now it boots up and looks ok in windows, I even ran a few benchmarks, so far so good. So I thought I would just check with memtest, and unfortunately it hangs on test 8. I have read other hanging on test 8, should I be concerned? Is it likely that I will also have problems in windows? Any advice would be greatly appreciated. Reubs Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 25, 2005 Corsair Employees Share Posted October 25, 2005 I would try and set the Ras to Cas to "3 and see if your system is more stable. In addition, please check for the latest bios from the MB maker as well. Link to comment Share on other sites More sharing options...
Reubs Posted October 28, 2005 Author Share Posted October 28, 2005 After much tweaking, I am stable under windows and memtest with: DDR400, 2,2,2,5 with command rate set to 2T and DRAM Volts high. Every time I try 1T, memtest fails on test 8. I lose about 15% in memory bandwidth but at least it's stable. I wonder if this is board or memory related. Any other way of getting 1T to work? Many thanks Reubs Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 28, 2005 Corsair Employees Share Posted October 28, 2005 More than likley the bios just needs to mature a bit. But I would test the modules one at a time to be sure. Link to comment Share on other sites More sharing options...
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