btmedolin Posted May 15, 2005 Share Posted May 15, 2005 Hello. I have 2 matched pairs of Corsair TwinX-3200C2 (4 *512) = 2GB with an MSI K8N Neo2 / AMD 64 3500 939 CPU. I ran mem test 4 passes with no errors. My problem is such. With 1 pair of RAM installed it posts at DDR400, but when the full 2GB are installed it posts as only DDR333. When I run Memtest the ram speed is listed as only 157Mhz = DDR315. I feel like I am not utilizing my RAM to its potential. How do i configure my system to run the ram at full speed? Can I force the ram to post at DDR400? Thanks. These are my settings: DRAM Configuration : Max Memclock: Limit or 200 1T/2T Memory Timing : 2T CAS# latency (Tlc): 2.5 RAS# to CAS# delay (Trcd): 3 Min RAS# active time (Tras): 6 Row precharge Time (Trp): 3 High Performance Mode : Manual Aggressive timing : DISABLED Dynamic Overclocking: DISABLED Spread Spectrum : Enabled HT Frequency : 5x Cool’n’Quiet: Enable Adjust CPU Rotation: Startup Adjust CPU FSB Frequency: 200 Adjust AGP Frequency: 66 Adjust CPU VID 1.500v CPU Voltage: By CPU VID Memory Voltage : 2.75 AGP Voltage: 1.6V (ATI 9600XT 256MB) Link to comment Share on other sites More sharing options...
tessar Posted May 15, 2005 Share Posted May 15, 2005 The reduction in memory clock rate with all memory slots populated with DIMMs is a limitation of the MSI K8N Neo2. Read the manual or http://www.msicomputer.com/product/p_spec.asp?model=K8N_Neo2_Platinum&class=mb You are fortunate that your system runs. My system with the MSI K8T Neo2 doesn't get pass the memory detection test in the POST. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted May 16, 2005 Corsair Employees Share Posted May 16, 2005 Please make sure that you have the latest BIOS installed on your MB and set the following BIOS settings; DRAM Configuration : Max Memclock: Limit or 200 1T/2T Memory Timing : 2T CAS# latency (Tlc): 2.5 RAS# to CAS# delay (Trcd): 3 Min RAS# active time (Tras): 6 Row precharge Time (Trp): 3 High Performance Mode : Manual Aggressive timing : DISABLED Dynamic Overclocking: DISABLED Spread Spectrum : Enabled HT Frequency : 5x Cool’n’Quiet: Enable Adjust CPU Rotation: Startup Adjust CPU FSB Frequency: 200 Adjust AGP Frequency: 66 Adjust CPU VID 1.500v CPU Voltage: By CPU VID Memory Voltage : 2.75 AGP Voltage: 1.50V *1.6V if you have 9200 or 9600 ATI or 5200 or 5700 Nvidia card. All other settings should be left to MB default settings. Then please test them one at a time with http://www.memtest.org and let’s make sure it's not some other issue! I would run the test for at least 2-3 passes to be sure! Link to comment Share on other sites More sharing options...
tessar Posted May 18, 2005 Share Posted May 18, 2005 Hi Ram Guy, Here is more information about my related problem. I have an MSI K8T Neo2 motherboard for the AMD Athlon 64 3500+. I originally built the system four months ago with TWINX1024-3200C2PT in slots 1 and 3. It has been running stably at DDR400 and 2.5-3-3-6 timings. I had a need for more memory because I stitch panoramic photos and use enblend for photometric blending (a real memory hog needing 1.5 GB of virtual memory). The motherboard claims to support having all four memory slots populated with DIMMs, but at DDR333 instead of DDR400. I decided that I could accept the lower speed for higher capacity. I bought VS1GBKIT400 to save a bit of money. The problem is that when I installed the sticks in slots 2 and 4, the boot died in the memory detection test, the first test in the POST. I have been able to run two passes of MemTest86 with only the VS1GBKIT400 installed in slots 1 and 3 (with 2 and 4 empty). The BIOS settings were DDR314 (157 MHz) and timings 2.5-3-3-6. I used the lower clock rate because the Neo2 claims to support four DIMMS at DDR333. Likewise, the TWINX1024-3200C2PT passed MemTest under similar conditions (DDR314). When I put the TWINX1024-3200C2PT in slots 1 and 3 and the VS1GBKIT400 in 2 and 4 with the same BIOS settings, the memory detection test fails. Do you have any suggestions? Should I loosen the timings or increase voltage? I have asked MSI for support too, but nothing has worked so far. I have the latest BIOS installed: V. 3.36 (3.30 is on the MSI web site). Kevin Please make sure that you have the latest BIOS installed on your MB and set the following BIOS settings; (settings deleted) Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted May 18, 2005 Corsair Employees Share Posted May 18, 2005 Kevin, I am sorry but you cannot mix memory with most systems. All of the modules would need to be the exact same part# and revision. Sorry! Link to comment Share on other sites More sharing options...
tessar Posted May 19, 2005 Share Posted May 19, 2005 Ram Guy, Thanks for the explanation. The MSI manual and support staff haven't stated that restriction at any time. I could either sell the TwinX at large depreciation and buy more ValueSelect, or return the ValueSelect with reshelving fee and buy more TwinX at higher cost. :sigh!: Kevin Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted May 19, 2005 Corsair Employees Share Posted May 19, 2005 If you get more of our XMS modules you would need to match the part# and revision and that may be hard to do. Link to comment Share on other sites More sharing options...
tessar Posted May 19, 2005 Share Posted May 19, 2005 Wow, that's really restrictive :!: Since I bought the ValueSelect last week, I suppose that you're suggesting I order another set of ValueSelect since it is more likely to have the same revision than the TwinX, which I bought in Oct. 2004. Kevin If you get more of our XMS modules you would need to match the part# and revision and that may be hard to do. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted May 19, 2005 Corsair Employees Share Posted May 19, 2005 We no not really, but what ever will suit your needs. Either way all of the modules would need to match. With Value Select they should match as long as you get the same part# but XMS will need to be matched with both part# and revision. Should you run into problems all we can do; would be to give you an RMA for all of the modules and request they send back matching revisions. But they would all need to be VS or XMS in order to do that. Link to comment Share on other sites More sharing options...
tessar Posted May 28, 2005 Share Posted May 28, 2005 Just to follow up, I bought another set of VS1GBKIT400 to complement the first set. With all four memory slots populated with the same Values Select DIMMs, the system runs stably at DDR314 and latencies of 2.5-3-3-6. The MSI Neo2 board specifies DDR333 when all slots are populated with DIMMs. Photoshop runs faster when loading 500 MB TIFFs (360 degree panoramics). I'm selling the TWINX1024-3200C2PT on eBay. I bought this in October 2004 for $226. The current high bid is $96 with the auction ending Wednesday, June 1. (Hint: My eBay ID is the same as my HOH ID.) Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted May 31, 2005 Corsair Employees Share Posted May 31, 2005 This motherboard will run at DDR 400MHz if you set the following BIOS settings manually, otherwise by Auto detect the memory module will only run at DDR 333MHz. Please make sure that you have the latest BIOS installed on your MB and set the following BIOS settings; Advanced Chipset/DRAM Configuration DRAM Configuration: Max Memclock: Limit or 200 1T/2T Memory Timing : 2T CAS# latency (Tlc): 2.5 RAS# to CAS# delay (Trcd): 3 Min RAS# active time (Tras): 8 Row precharge Time (Trp): 3 Frequency Voltage Control High Performance Mode : Manual Aggressive timing : DISABLED Dynamic Overclocking: DISABLED Spread Spectrum : Enabled HT Frequency : 5x Cool’n’Quiet: Enable Adjust CPU Rotation: Startup Adjust CPU FSB Frequency: 200 Adjust AGP Frequency: 66 Adjust CPU VID 1.500v CPU Voltage: By CPU VID Memory Voltage : 2.75 AGP Voltage: 1.50V *1.6V if you have 9200 or 9600 ATI or 5200 or 5700 Nvidia card. All other settings should be left to MB default settings. Then please test them one at a time with http://www.memtest.org and let’s make sure it's not some other issue! I would run the test for at least 2-3 passes to be sure! Link to comment Share on other sites More sharing options...
EddyPetch Posted June 4, 2005 Share Posted June 4, 2005 You could bring your memory bandwith up a tad? Drop the multiplier to 10. Drop the HTT to 4x Increase the FSB to 220 Still running at 2200; DDR367 Or, if good cooling: HTT4x; Multiply 10x240 and have DDR400 @ 2400. Link to comment Share on other sites More sharing options...
tessar Posted June 7, 2005 Share Posted June 7, 2005 I have the latest BIOS. I set the memory speed to DDR400 and changed the other setting too. Upon rebooting, the motherboard overrode my setting and put the clock down to DDR314 (the closest it can get to DDR333). That's okay since the manual states the limitation. Also, the panoramic imaging software runs much faster with more more memory (disk is orders of magnitude slower), and that's all that matters. Thanks for the help. Link to comment Share on other sites More sharing options...
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