Kersal Posted February 2, 2008 Share Posted February 2, 2008 Hi, i have a M2N-E with Vista 64Bit Installed. I have a 2xCM2X2048-6400 and 2xCM2X1024-6400 for a total of 6gb The problem is that when i put all together the system works properly but in single channel mode only even if all the memory are twins. Why? Furthermore, is better to have 6Gb single channel or 4gb dual? (i generally play videogames and do photo editing) tnx Link to comment Share on other sites More sharing options...
bigbuck08 Posted February 2, 2008 Share Posted February 2, 2008 Try setting the DDR speed to 667, you may have to go even lower to 533. Having 4GB in dual channel wil be better than running 6GB in single channel. Link to comment Share on other sites More sharing options...
Wired Posted February 3, 2008 Share Posted February 3, 2008 I have a TWIN2X2048-6400 and 2xCM2X1024-6400 for a total of 6gbThat's 4 GB total, and since your motherboard has 4 slots total, either you've listed the wrong memory part #s, or you have a magical board :) Link to comment Share on other sites More sharing options...
Kersal Posted February 3, 2008 Author Share Posted February 3, 2008 2 x 2gb + 2 x 1 xgib = 6 gb no magical mainboard. All slot occupied. Link to comment Share on other sites More sharing options...
Wired Posted February 3, 2008 Share Posted February 3, 2008 Gotcha, a Twin2X4096 pack with a Twin2X2048 pack. Thanks for editing that in your original post. Link to comment Share on other sites More sharing options...
Xtreeme Posted February 3, 2008 Share Posted February 3, 2008 The problem is that when i put all together the system works properly but in single channel mode only even if all the memory are twins. Why? This really sounds like a mainboard issue to me. Contact the mainboard manufacturer. It may just require a bios update. Also are the ram timings the same on all 4 sticks, if not manaully set them to the slowest timings you have. Link to comment Share on other sites More sharing options...
Kersal Posted February 4, 2008 Author Share Posted February 4, 2008 I Have read somewhere that the problem is the way AMD address the ram, so is possible to do dual channel only on 2 banks and not on all 4. I report this: (it's TRUE??) "The Athlon 64 has a dual channel memory controller that can run 4 single sided DIMMs or 2 double sided DIMMS at 400MHz, but can't run 4 double sided DIMMs at more than 333MHz. As 1GB single sided DIMMs are almost unnobtainable yours are probably double sided, so you could run just that pair at 400MHz (provided they're placed one on each controller) but when you added the extra DIMMs, either single or double sided, the memory controller can'e run them at more than 333MHz. Basically when you're using double sided DIMMs the only way to run them at 400MHz is to have them one on each memory controller and have the second slot on that controller empty, because each controller can only run 2 "sides" of memory at full speed, any more and it drops the speed down." Link to comment Share on other sites More sharing options...
Xtreeme Posted February 4, 2008 Share Posted February 4, 2008 thats not what happening though (and btw the board does have a little to do with it aswell). Your not dropping in speed, your running single channel. Going by the density of 1gb in that quote Id say thats from the s939 or even s754 days. While its true that most will drop in speed, if the mem matches it should still be in dual channel mode. Link to comment Share on other sites More sharing options...
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