TIMMY1626862255 Posted June 4, 2007 Share Posted June 4, 2007 I know this problem has been posted a million times before, but mines a little different. I had my 2 x 1024 Corsair Value Ram running @ 254FSB 2.7V 3-4-4-7 1T Dual Channel, AMD Operton 146 @ 280FSB 1.4v, for months on end and its been fine for me until.... I changed everything in my PC apart from the motherboard, ram and cpu. I didn't even removed the ram and cpu from the motherboard when putting the motherboard into the new case. So I hooked it all up and tried to boot, long beeep. It was the ram, so I took out one stick, and the PC booted fine. I tried resetting the cmos but it didnt allow me to run dual channel. So I then updated to the current lastest BIOS, but still no luck with dual channel. Even using the optimized defaults wont allow me to boot in dual channel. So i have been forced to run both sticks in Single Channel. I tired to enable 1T again, but it isnt having that either, even at 200FSB 3-4-4-8 (default 3-3-3-8). I memtested them both and they did not produce any errors in single channel 2T. Edit: Ive tried both 1&3 and 2&4 slots, no luck :( The thing is that I don't want to RMA these sticks because they will do 254FSB, Can anyone help me and shed some light on why the motherboard wont allow dual channel now, when it did before. Ive tired many settings from DIY Street, and I would love to have dual channel and 1T back. Thank you. !TIMMY! Specs: DFI Lanparty NF4 SLI-DR AMD Opteron 146 @ 1.4v 2 x 1024 Corsair Value PC3200 @ 3-4-4-8 2T 2.7v Single Channel Sapphire Radeon X1900XT 256mb @ 682/1566 Hiper Type R 580W Link to comment Share on other sites More sharing options...
TIMMY1626862255 Posted June 4, 2007 Author Share Posted June 4, 2007 Ok, I was bored this morning, and decided to dive into the BIOS again. I set most of the ram timings to 'Auto' and the DRAM Speed to 'Slow', and bam.... my opty is at 2.80GHz 1.4v and ram at 254FSB @ 3-4-4-7 2.7v but still at 2T and Single Channel. This is the same as I had it before, but at 2T and single instead of dual channel. I still can not get dual channel to post or 1T to post in single channel. Does anyone know which ram timings apply to these to I can have more of a fiddle. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 4, 2007 Corsair Employee Share Posted June 4, 2007 Test the system with out over clocking your CPU and see what happens. Link to comment Share on other sites More sharing options...
TIMMY1626862255 Posted June 4, 2007 Author Share Posted June 4, 2007 I have, with optimized defaults, and still no luck with dual channel :( Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 4, 2007 Corsair Employee Share Posted June 4, 2007 Then you have a bad CPU or the MB has a problem, I would test the CPU in another system to be sure. Link to comment Share on other sites More sharing options...
TIMMY1626862255 Posted June 5, 2007 Author Share Posted June 5, 2007 Unfortunetly I dont have another 939 mobo to test the cpu :( It just seems weird that it was fine before then didnt work wen I moved it to another case. After the Bios update i lost my original settings and cant remember all the ram timimgs I had, and thought that this could be the problem. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 5, 2007 Corsair Employee Share Posted June 5, 2007 Take the MB out of the case and test it on the Box the MB came in, if it works out of the case the check for a grounding problem, if it still does not work I would re-flash the Bios and see if that helps. Link to comment Share on other sites More sharing options...
TIMMY1626862255 Posted June 12, 2007 Author Share Posted June 12, 2007 Ok, i tried it out of the case, and still couldn't run dual channel, or 1T. So I flashed the Bios to the latest official (the same as what I was running), and that made no difference. Am I right in thinking that the memory controller for Socket 939 is in the CPU? Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 12, 2007 Corsair Employee Share Posted June 12, 2007 Yes the memory controller is in the CPU and why I suggested testing it in another system. Link to comment Share on other sites More sharing options...
TIMMY1626862255 Posted June 13, 2007 Author Share Posted June 13, 2007 I would do but I dont know anyone with a 939 mobo :( Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 14, 2007 Corsair Employee Share Posted June 14, 2007 Are you still trying to over clock the CPU or just running at Defaults? Link to comment Share on other sites More sharing options...
TIMMY1626862255 Posted June 14, 2007 Author Share Posted June 14, 2007 Still trying to run at defaults with dual channel and 1T. I tried taking out the cpu and putting it back in, re applying the thermal paste and resetting the cmos, but that did not make a difference. Im really running out of ideas, why would it work before and not now? Heres my current settings, maybe there something in there: FSB 200 Command Per Clock (CPC) 2T CAS Latency (CL) 3T RAS To CAS Delay (tRCD) 4T RAS Precharge (tRP) 4T RAS Active Time (tRAS) 8T Row Cycle Time (tRC) 14T Row Refresh Cycle Time (tRFC) 16T Command Rate (CR) 2T RAS To RAS Delay (tRRD) 2T Write Recovery Time (tWR) 3T Read To Write Delay (tRTW) 4T Write To Read Delay (tWTR) 1T Write CAS Latency (tWCL) 1T Refresh Period (tREF) 166 MHz 7.8 us DQS Skew Control Disabled DRAM Drive Strength Weak DRAM Data Drive Strength 4 (No Reduction) Max Async Latency 12 ns Read Preamble Time 9.0 ns Idle Cycle Limit 256 Dynamic Idle Cycle Counter Disabled Read/Write Queue Bypass 8 Bypass Max 4 32-byte Granularity Enabled Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 14, 2007 Corsair Employee Share Posted June 14, 2007 Set the command Rate to 2T and see what happens. Link to comment Share on other sites More sharing options...
TIMMY1626862255 Posted June 15, 2007 Author Share Posted June 15, 2007 Sorry the Command Per Clock (CPC) was meant to be the Command Rate (was tired when I wrote that). It is set at 2T, I can't set it at 1T in single channel, PC won't post. 2T wont work in dual channel either. Ive totally run out of ideas now :( I have read on DIY Street that other people have had similar problems but there doesnt seem to be a fix for it. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 15, 2007 Corsair Employee Share Posted June 15, 2007 Keep in mind, for most motherboards, CPU and RAM thru time the overclocking results will decline. Link to comment Share on other sites More sharing options...
TIMMY1626862255 Posted June 16, 2007 Author Share Posted June 16, 2007 Yeah that is true, but ive been running default manufactor's voltage through all of my components :( Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 18, 2007 Corsair Employee Share Posted June 18, 2007 Please try what I have suggested with the and Voltage. Link to comment Share on other sites More sharing options...
TIMMY1626862255 Posted June 18, 2007 Author Share Posted June 18, 2007 ??? im running at defaut speeds with default voltages :( I might have to buy a second hand 939 cpu to test the motherboard out. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 18, 2007 Corsair Employee Share Posted June 18, 2007 Did you try setting the memory Voltage and for sure you will need to set the command Rate to 2T as well. Link to comment Share on other sites More sharing options...
TIMMY1626862255 Posted June 19, 2007 Author Share Posted June 19, 2007 I hav have memory voltage at 2.7v as this is the highest it is varified to run, and I have to run the command rate at 2T or the PC wont post. I cant get it to run 1T at all at the moment, and the ram is supposed to. Thats why I will get an old 939 cpu and test it to see if it is my AMD opteron or DFI that is stopping me running dual channel and 1T. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 19, 2007 Corsair Employee Share Posted June 19, 2007 Command Rate is not really a memory setting and would be dependent on the make and model of MB and PSU and the specific CPU you have installed. You might look this setting up on http://www.rojakpot.com and get a better explanation. Link to comment Share on other sites More sharing options...
TIMMY1626862255 Posted June 27, 2007 Author Share Posted June 27, 2007 Ok I bought a athlon 64 3700, and it works fine. I now have dual channel and 1T working. Even managed to overclock it back to where I originally had it. I have no idea what went wrong with my opteron 146. O well its all fixed now. Thanks for the help Ram Guy. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted June 27, 2007 Corsair Employee Share Posted June 27, 2007 Probably just getting tired if you have been over clocking it like whats in your signature. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.