jazpaisley Posted August 5, 2010 Share Posted August 5, 2010 I had recently bought Twin2x2048-6400C5DHX-G lot #10153549, to add more memory to my Gigabyte GA-EP45-UD3L motherboard. Together with my first Twin2x2048-6400C5DHX-G lot #09427752 I would have 4 GB of memory. The problem I'm having is, I can't use all four sticks, no matter what BIOS setting I use, both twin sets work fine by them self, even using three sticks works good. Is there another solution to my dilemma ? :(: Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted August 6, 2010 Corsair Employee Share Posted August 6, 2010 Set the memory timings to 5-5-5-18-2T and the memory voltage to 1.9v. Set the memory frequency to 667MHz. You may also need to give the NB/MCH a slight voltage boost as well. Link to comment Share on other sites More sharing options...
jazpaisley Posted August 6, 2010 Author Share Posted August 6, 2010 Would be safe to increase memory Voltage to 2.1 Link to comment Share on other sites More sharing options...
jazpaisley Posted August 6, 2010 Author Share Posted August 6, 2010 Sorry, that didn't workSet the memory timings to 5-5-5-18-2T and the memory voltage to 1.9v. Set the memory frequency to 667MHz. You may also need to give the NB/MCH a slight voltage boost as well. Gigabyte GA-EP45-UD3L v1.0, Bios F9 Reduce memory freq =667 -133Mhz Increase memory Voltage=1.9 +.1 Increase MCH voltage=1.16 +.06 even increase tRFC=56 +4 Link to comment Share on other sites More sharing options...
jazpaisley Posted August 7, 2010 Author Share Posted August 7, 2010 Is their a matching set of four DDR2 800/1066 memory that will work as dual mode x2 on a Gigabyte GA-EP45-UD3L v1.0 motherboard with Q8400 CPU Link to comment Share on other sites More sharing options...
Synthohol Posted August 7, 2010 Share Posted August 7, 2010 use the memory finder link on the left to find what you want :): Link to comment Share on other sites More sharing options...
jazpaisley Posted August 7, 2010 Author Share Posted August 7, 2010 My motherboard not listed in the Memory Finder link Link to comment Share on other sites More sharing options...
Synthohol Posted August 7, 2010 Share Posted August 7, 2010 a similar board with the same P45 chipset should work for comparison. or you can wait until monday and get RAM GUY's advice, he may not have seen this thread. also mixing RAM is not supported especially at listed speed. Link to comment Share on other sites More sharing options...
jazpaisley Posted August 7, 2010 Author Share Posted August 7, 2010 Twin2x2048-6400C5DHX-G lot #10153549, v5.1 Twin2x2048-6400C5DHX-G lot #09427752, v1.2 Maybe thats why these two won't work together? Its too bad, I thought when I bought them they would do the job. But when you buy ram, they don't tell you the version. Link to comment Share on other sites More sharing options...
Synthohol Posted August 7, 2010 Share Posted August 7, 2010 the version does not matter, buying/installing 2 sets from 2 separate packages does. yes you would have stood a better chance on getting the ram to play nicely together at a lower speed if they came from the same batch HOWEVER when 4 sticks are required as per your capacity needs, Corsair (and other) RAM makers design and test and package the 4 sticks together to be installed on 1 board. they were hand tested that way to ensure all 4 sticks will operate at their listed speed(s) on a single board. there are 2 roads to take here, you can sell what you have and purchase a 4 stick kit from a single package or you can request 2 RMAs to have a better chance of getting 2 sets with the same version BUT this is not guaranteed either that you will get the same version back on both sets but your odds are likely better than 50/50 as per the posts i have read here over the past couple years. i dont know if you have read this yet but it covers the dilemma you are facing a bit more than i can do in a post.. http://forum.corsair.com/v3/attachment.php?attachmentid=3803&d=1215810616 just yesterday i posted a similar response to the same issue here... http://forum.corsair.com/v3/showthread.php?t=88675& Link to comment Share on other sites More sharing options...
Wired Posted August 8, 2010 Share Posted August 8, 2010 Version number matters as well. Link to comment Share on other sites More sharing options...
jazpaisley Posted August 8, 2010 Author Share Posted August 8, 2010 GA-EP45-UD3L v1.0 F9 Bios http://a.imageshack.us/img571/3741/s6302817.jpg http://a.imageshack.us/img840/6788/s6302816.jpg http://a.imageshack.us/img405/9581/s6302815.jpg http://a.imageshack.us/img835/9285/s6302814.jpg Which Driving Pull-up or Pull-down is best Link to comment Share on other sites More sharing options...
jazpaisley Posted August 9, 2010 Author Share Posted August 9, 2010 Well the (667) memory Ideal worked. I had a old pair of Corsair Value RAM VS1GB667D2 5-5-5-15 combined with Twin2x-2048-6400DHX, and it works now I have 4GB dual channel memory. Just need to test it now......... Windows Experience Index went from 5.9 to 7.2 ... unsure why? memory running at 666 mhz http://img824.imageshack.us/img824/8527/weiq.jpg Link to comment Share on other sites More sharing options...
jazpaisley Posted August 25, 2010 Author Share Posted August 25, 2010 I went ahead and RMA the Corsair Twin2x2048-6400c5dhx v1.2, and a new set was returned.... cross my fingers and it worked Now I have two pairs of Twin2x2048-6400C5DHX G, thats put me back in the game! Thanks Corsair, and everyone who helped Memory Controller: Type Dual Channel (128-bit) Active Mode Dual Channel (128-bit) Memory Timings: CAS Latency (CL) 5T RAS To CAS Delay (tRCD) 5T RAS Precharge (tRP) 5T RAS Active Time (tRAS) 18T Row Refresh Cycle Time (tRFC) 52T Command Rate (CR) 2T RAS To RAS Delay (tRRD) 3T Write Recovery Time (tWR) 14T Read To Read Delay (tRTR) Same Rank: 4T, Different Rank: 6T Read To Write Delay (tRTW) 8T Write To Read Delay (tWTR) Same Rank: 11T, Different Rank: 5T Write To Write Delay (tWTW) Same Rank: 4T, Different Rank: 6T Read To Precharge Delay (tRTP) 5T Write To Precharge Delay (tWTP) 14T Precharge To Precharge Delay (tPTP) 1T Refresh Period (tREF) 3120T DRAM Read ODT 3T DRAM Write ODT 6T MCH Read ODT 11T Performance Level 7 Read Delay Phase Adjust Neutral DIMM1 Clock Fine Delay 10T DIMM2 Clock Fine Delay 5T DIMM3 Clock Fine Delay 10T DIMM4 Clock Fine Delay 6T Memory Slots: DRAM Slot #1 1 GB (DDR2-800 DDR2 SDRAM) DRAM Slot #2 1 GB (DDR2-800 DDR2 SDRAM) DRAM Slot #3 1 GB (DDR2-800 DDR2 SDRAM) DRAM Slot #4 1 GB (DDR2-800 DDR2 SDRAM) Link to comment Share on other sites More sharing options...
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