Monarch Posted December 8, 2004 Share Posted December 8, 2004 Athlon 64 CPUs have built-in memory controlls (f*cking pofs!, cheapos!) that will let you have optimal performance only 2 RAM sticks. 2 RAM stinks - dual channel, high FSB, 1T command rate 3 RAM stinks - single channel, low FSB, 2T command rate... SUPPOSEDLY MSI NEO 2 can do 200Mhz even with 3 RAM stinks. I have Corsair XMS PC 3500 BH-5 1x512Mb, and Corsair XMS PC3200LL 2x256Mb. Will this board run all of them at at least 200Mhz? Single channel...darn. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted December 8, 2004 Corsair Employees Share Posted December 8, 2004 All of the modules will need to be identical or it will not post. And it will run at DDR400 with 2 modules, but DDR333 would be suggested if you run more than 2 modules. Link to comment Share on other sites More sharing options...
Monarch Posted December 8, 2004 Author Share Posted December 8, 2004 Will not POST at unidentical modules? What if I would have 512Mb of PC3200 LL Corsair, and 512Mb of Mushkin BH-6? Both 512Mb... Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted December 8, 2004 Corsair Employees Share Posted December 8, 2004 If the SPD on the modules are not matched the MB will not post! Link to comment Share on other sites More sharing options...
Monarch Posted December 9, 2004 Author Share Posted December 9, 2004 Oh...thats why there is one stick that you can use and then set the timings manually... Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted December 9, 2004 Corsair Employees Share Posted December 9, 2004 With Intel platform you can do that in most cases. However, with AMD 64 since the memory controller is in the CPU when the system posts it will ignore the timings set in the bios until it is finished the post. And if the SPD's of the modules are not the same the memory controller will not know what to set and give a no memory detected post code! Link to comment Share on other sites More sharing options...
Monarch Posted December 9, 2004 Author Share Posted December 9, 2004 With Intel platform you can do that in most cases. However, with AMD 64 since the memory controller is in the CPU when the system posts it will ignore the timings set in the bios until it is finished the post. And if the SPD's of the modules are not the same the memory controller will not know what to set and give a no memory detected post code! Is there a 100% chance for that? Most people tell me to just try and see. SPD for Corsair XMS PC3200L is 2-2-3-6 (or 2-3-2-6, depending on the sequences you follow). Mushkin (or Winbond) BH-6...I no idea. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted December 9, 2004 Corsair Employees Share Posted December 9, 2004 Well if you have a AMD 64 system then I am sorry I have explained that. But if you have an Intel platform MB then I would agree try it and see. Link to comment Share on other sites More sharing options...
Monarch Posted December 9, 2004 Author Share Posted December 9, 2004 Well if you have a AMD 64 system then I am sorry I have explained that. But if you have an Intel platform MB then I would agree try it and see. Someone reports for MSI Neo2 Plat: "I've run completely different Corsair sticks together. One was a two year old 3200C2 and the other was new 3200LL. They ran together fine." Those 2 memory modules have different SPD values... Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted December 10, 2004 Corsair Employees Share Posted December 10, 2004 It's more complicated than I can explain here, but in a nut shell the SPD is a hexadecimal # that the memory controller or bios will read and then thru a formula will set the binary bit to set a register value in the memory controller for the memory timings. With some modules that are close the memory controller can compensate. However, in most cases I would not suggest it, but you are welcome to try what you like. Link to comment Share on other sites More sharing options...
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