CouGaR Posted January 7, 2006 Share Posted January 7, 2006 Hi, I need some help with the RAM I just purchased and received. The RAM will not run at 1T timing no matter what, regardless of speed and voltages. Memtest spits out errors by the 1000s in 1T. Just recently I was able to run a pass of Memtest at 250MHZ at 2T with no errors after getting some help from another forum. I changed a lot of the timings around to get it to work at 2T, but I want to be able to run them in 1T anyway. Both sticks, one at a time, still gave out errors by the way in both 1T and 2T. I have not tested them individually again after I changed the timings. Can someone help me in changing the BIOS RAM options for this RAM to make it work at it's best? I'm using the ASUS A8R-MVP motherboard with BIOS 0309 (latest). Here's some BIOS screens if they can help: http://www.anandtech.com/mb/showdoc.aspx?i=2617&p=3 Thanks in advance for any help. Link to comment Share on other sites More sharing options...
Wired Posted January 7, 2006 Share Posted January 7, 2006 IIRC, they're not rated @ a specific Command Rate, in otherwords 1T isn't guaranteed, nor tested. http://www.corsair.com/corsair/products/specs/TWINX2048-4000PT.pdf http://www.houseofhelp.com/v2/showthread.php?t=38150 Link to comment Share on other sites More sharing options...
CouGaR Posted January 7, 2006 Author Share Posted January 7, 2006 Aw man, that sucks. I would have never thought that RAM like this couldn't run in 1T. Anyway, could you recommend the best settings for the RAM? Thanks. Link to comment Share on other sites More sharing options...
Wired Posted January 7, 2006 Share Posted January 7, 2006 First link I posted had the timings: CAS Latency (tCL): 3 RAS to CAS Delay (tRCD): 4 Row Precharge (tRP): 4 Active to Precharge Delay (tRAS): 8 Memory Voltage: 2.75 Volts All other settings to defaults. Link to comment Share on other sites More sharing options...
CouGaR Posted January 7, 2006 Author Share Posted January 7, 2006 Yes, I know about the 3-4-4-8 timings, but there's a lot more of them that I need to adjust in the BIOS. Here's my BIOS: http://img352.imageshack.us/img352/7740/p10403984jx.jpg http://img352.imageshack.us/img352/1251/p10403971dm.jpg Can you tell me what to change from those pics? I really appreciate you help. Link to comment Share on other sites More sharing options...
Wired Posted January 8, 2006 Share Posted January 8, 2006 All other settings to defaults.Corsair doesn't list specific settings for them, just to be set to defaults. Link to comment Share on other sites More sharing options...
CouGaR Posted January 8, 2006 Author Share Posted January 8, 2006 Oh. Before I changed any of the other settings both sticks failed Memtest miserably, so I guess it's best to return them at this point. Thanks for your help. Link to comment Share on other sites More sharing options...
CouGaR Posted January 9, 2006 Author Share Posted January 9, 2006 Is this site wrong? http://www.thinkcomputers.org/v2/index.php?x=reviews&id=269 They said this RAM is guaranteed to run at 250MHz 1T. Link to comment Share on other sites More sharing options...
Wired Posted January 10, 2006 Share Posted January 10, 2006 Unless Corsair has said that somewhere, yes, they're wrong. Link to comment Share on other sites More sharing options...
nichomach Posted January 11, 2006 Share Posted January 11, 2006 Unless Corsair has said that somewhere, yes, they're wrong. http://www.altech.com.au/addon/newsletters/corsairxms4000_051027pr.pdf Available in both 1GB single and 2GB kit packages, the XMS-4000PT is guaranteed to run at 500MHz at 3-4-4-8-1T. Something I was very interested in, since I'm looking at an X2 4400, and need some reasonably stonking memory to match it. Preferably without "diagnostic" LEDs since they frighten the cat... Seriously, though, I'd be interested at some point to see a response from someone from Corsair if they do stop by. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted January 12, 2006 Corsair Employee Share Posted January 12, 2006 Command Rate is not really a memory setting and would be dependant 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. And the fact that you dont have any errors whe set to 2t Command Rate would suggest its some other issue. If possible I would test the modules in another system if you can that might help verify the issue. However, if you just want to get them replaced. Please follow the link in my signature “I think I have a bad part! Or *New* Tech Support Express” and we will be happy to replace them or it! Link to comment Share on other sites More sharing options...
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