UNIXUSER Posted November 19, 2009 Share Posted November 19, 2009 I have 2X CMG4GX3M2A1600C7. Am not able to get 7-7-7-20 1600 speed. The system runs fine at 9-9-9-24 667Mhz /1334Mhz. FSB 3:10 T1. I have seen MANY others in the same boat on the MSI / Gigabyte / Asus forums. When they set 7-7-7-20 timings up in BIOS then no POST. No solution in sight. I can give a loooong list of things tried, booth BIOS and software such as AMD overdrive and MSI overcloockingcenter. Not realy looking forward to the next two months of rebooting and testing. If someone can be kind and look at the MSI 790fx G70 PDF manual and give a good clue.:confused: Link to comment Share on other sites More sharing options...
Wired Posted November 19, 2009 Share Posted November 19, 2009 Do you mean you have two sticks, or two kits? Link to comment Share on other sites More sharing options...
UNIXUSER Posted November 19, 2009 Author Share Posted November 19, 2009 Just two sticks. In the other forums I see the same problem with the thread ending with a return of CMG4GX3M2A1600C7 and other ram selected. :sigh!: I paid twice as much for the Corsair ram due to the fact that I have used it for years and trusted it. Not looking for some super overclock just 1333 or 1600 with tight timings. I would like to know if this ram is a no go. I can return it. Link to comment Share on other sites More sharing options...
Wired Posted November 19, 2009 Share Posted November 19, 2009 Are you leaving the memory voltage at auto or setting it to what's on the label? Link to comment Share on other sites More sharing options...
UNIXUSER Posted November 20, 2009 Author Share Posted November 20, 2009 I ment it when I said a LOOOONG list of things tried. Yes 1.65v, I was not joking about months of rebooting. This board has every memory and clock option that you can think of. The combinations would be well over 100,000. :eek: I did not give up after one week but I will give up. Thanks for trying to help, but this is more than "just put in the correct settings in BIOS". Those settings did not get to POST or crashed after boot. Link to comment Share on other sites More sharing options...
Yellowbeard Posted November 20, 2009 Share Posted November 20, 2009 Some AMD CPUs simply will not run memory at 1600. My suggestion is to find stable settings at or around 1066 or 1333. Then, try to work upwards from there. Link to comment Share on other sites More sharing options...
UNIXUSER Posted November 21, 2009 Author Share Posted November 21, 2009 666mhz at 9-9-9-24 is what it is at now. This is with a 965 black edition. NOT looking to hit 2000mhz as the mother board and ram claim they can do. Just looking to get 1333 mhz at (( 7-7-7-20)). This is the same as the other Google forum hits, in the end it is a NO GO. please relabel the ram for others. Link to comment Share on other sites More sharing options...
GrandAdmiral Posted November 21, 2009 Share Posted November 21, 2009 Hi there I have 2x2GB CMG4GX3M2B1600C7 which I've been running for a few days with a 965BE at 1333 7-7-7-20 @ 1.6V. No problems for me other than having to manually set those timings and missing 1600MHz timings. Is that a fault with my RAM sticks? Grand Admiral Link to comment Share on other sites More sharing options...
Yellowbeard Posted November 21, 2009 Share Posted November 21, 2009 666mhz at 9-9-9-24 is what it is at now. This is with a 965 black edition. NOT looking to hit 2000mhz as the mother board and ram claim they can do. Just looking to get 1333 mhz at (( 7-7-7-20)). This is the same as the other Google forum hits, in the end it is a NO GO. please relabel the ram for others. What do you mean relabel the RAM for others :confused: Link to comment Share on other sites More sharing options...
GrandAdmiral Posted November 21, 2009 Share Posted November 21, 2009 I think he means relabel the RAM as a lower speed because he and apparently others haven't been able to get it to work properly at the advertised speed. Which I really doubt you're gonna do. Grand Admiral Link to comment Share on other sites More sharing options...
Wired Posted November 21, 2009 Share Posted November 21, 2009 Agreed. You can always RMA it or try it on another system. Link to comment Share on other sites More sharing options...
UNIXUSER Posted November 22, 2009 Author Share Posted November 22, 2009 "relabel the RAM for others". I have two sticks of Corsair Platinum Twinx CMX256A 3200C2pt from a few years ago that were sold as PC3200 400 mhz C2. Latter Corsair changed the data sheets to read C2.5. They have been runing it at C3. Mistakes happen.:sigh!: I'm just going to leave it at 1400 mhz 7-7-7-20. 1.68v. Thanks for your time. Link to comment Share on other sites More sharing options...
Yellowbeard Posted November 22, 2009 Share Posted November 22, 2009 "relabel the RAM for others". I have two sticks of Corsair Platinum Twinx CMX256A 3200C2pt from a few years ago that were sold as PC3200 400 mhz C2. Latter Corsair changed the data sheets to read C2.5. They have been runing it at C3. Mistakes happen.:sigh!: I'm just going to leave it at 1400 mhz 7-7-7-20. 1.68v. Thanks for your time. The data sheet was changed because the modules changed. Link to comment Share on other sites More sharing options...
Wired Posted November 22, 2009 Share Posted November 22, 2009 Also IIRC those sticks could run CAS 2.0 just fine on Intel systems but AMD memory controllers pre-Athlon 64 couldn't run memory faster than CAS 2.5. Link to comment Share on other sites More sharing options...
UNIXUSER Posted November 23, 2009 Author Share Posted November 23, 2009 That is what was changed, that it would work on Intel at cas 2 but not with the AMD CPUs. I had an AMD 32 bit 3200+. Those sticks are still good but I replaced them with 512mb Corsair XMS. :sunglasse Link to comment Share on other sites More sharing options...
Yellowbeard Posted November 23, 2009 Share Posted November 23, 2009 These are different cirumstances and do not warrant relabeling memory. In this case, some of the newer AMD CPUs will run 1600 and some won't. However, this is a limitation common with any CPU as OCing is not guaranteed. Link to comment Share on other sites More sharing options...
UNIXUSER Posted November 26, 2009 Author Share Posted November 26, 2009 "These are different cirumstances" Feels the same. But I know that it is more a matter of me finding the sweet spot with this mother board. The ASUSA7N8X-E did and the AMD 3200+ "CPU in a box" did have the option for 2.0. Link to comment Share on other sites More sharing options...
UNIXUSER Posted December 17, 2009 Author Share Posted December 17, 2009 I hit 1600 7-7-7-20. It was the MSI instructions and software leading me into a brick wall time after time. It would have been plug and play if I used the CMG4GX3M2B1600C7. ALL of the auto settings failed useing the CMG4GX3M2A1600C7. Link to comment Share on other sites More sharing options...
Yellowbeard Posted December 17, 2009 Share Posted December 17, 2009 I hit 1600 7-7-7-20. It was the MSI instructions and software leading me into a brick wall time after time. It would have been plug and play if I used the CMG4GX3M2B1600C7. ALL of the auto settings failed useing the CMG4GX3M2A1600C7. That coincides with what we recommend for AMD boards: http://www.corsair.com/products/phenomii/default.aspx Link to comment Share on other sites More sharing options...
xpatar Posted December 26, 2009 Share Posted December 26, 2009 Even though I've seen that you have changed your ram modules, I would like to ask you a few questions: a) Did see any difference using the black or the blue slots? b) Did you try disabling any spread spectrum option inside bios? Take a look the extract I found in the manual of your board: "1. If you do not have any EMI problem, leave the setting at [Disabled] for optimal system stability and performance. But if you are plagued by EMI, select the value of Spread Spectrum for EMI reduction. 2. The greater the Spread Spectrum value is, the greater the EMI is reduced, and the system will become less stable. For the most suitable Spread Spectrum value, please consult your local EMI regulation. 3. Remember to disable Spread Spectrum if you are overclocking because even a slight jitter can introduce a temporary boost in clock speed which may just cause your overclocked processor to lock up." So if you still have those modules try disabling any spread spectrum option. c) Set your vdimm @ 1.65v and try again. Link to comment Share on other sites More sharing options...
UNIXUSER Posted June 16, 2010 Author Share Posted June 16, 2010 Ram voltage to 1.8V seems to work the best. CPU-Z willl then show 7-7-7-20-41 2T in XPM. and the ram IS running at 1600. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted June 17, 2010 Corsair Employees Share Posted June 17, 2010 The AMD CPU's are rated at DDR1333 Max and you can check with AMD if you like but some will run the memory at DDR1600 and most will not with out some tweaking so that is normal. Link to comment Share on other sites More sharing options...
UNIXUSER Posted September 2, 2010 Author Share Posted September 2, 2010 Take the RAM voltage to 1.72 and now running at 1600 7-7-7-20 41 T2. NB voltage up a little from stock. The latest AMD overdrive was usefull. Link to comment Share on other sites More sharing options...
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