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F2-8500CL5D-4GBPK + GA-MA790X-UD4P: One good pair, two bad???
I've got a new Gigabyte GA-MA790X-UDP4 MoBo, a Phenom II X4 3 GHz. (Deneb) processor and F2-8500CL5D-4GBPK memory. When I made the initial purchase from Newegg, I bought one pair of memory modules to see how they worked out.
The answer was, "Just fine." I installed the two modules into the yellow sockets (1 & 2), set the settings to the ones suggested in the sticky thread in this forum related to this combo and let it rip overnight running Memtest86+. The next morning, 15 passes of Memtest and no errors.
Based on this experience, I ordered another pair of the same modules to expand the system to 8 GB. When the 2nd pair arrived, I decided to test it. I pulled out the original pair, inserted the 2nd pair in the yellow sockets and fired up Memtest+. It would run until test 5 and then crash the system (it would reboot). I pulled the module from slot 2 and ran Memtest with just the one module. It ran until test 5 and then hung the system (no reboot, Memtest just hung). I pulled out that one module and replaced it with the 2nd "new" module. Same deal, Memtest hung at test 5.
Confirming there was an "issue," booting to Win XP produced a BSOD almost immediately with the 2nd set of modules. With the "original" set, Win XP ran without a problem.
I put the "original" pair of modules back in the yellow sockets, ran Memtest+ and again, no errors at all.
Based on this, I contacted Newegg and RMA'd the 2nd set of modules. Today, I got another pair as the replacements. I again removed the "original" pair of modules, stuck in the "new" set into the yellow sockets and ran Memtest+. Everything is fine until test 5 where I start to get thousands of errors. Pulled out the module from slot 2 and ran just one with Memtest+ and got errors (lots) in test 5. Swapped the other "new" module into slot 1 and ran it alone: same result - lots of errors in test 5.
I put back the "original" pair of modules into slots 1 & 2 and, once again, no errors at all with Memtest+.
In all cases, I used the suggested timings and memory voltage from the sticky thread. I tried bumping up the north bridge voltage, but it made no apparent difference.
Note that I haven't even tried running all four modules at the same time to get to 8 GB (with 64-bit Ubuntu). I'm beginning to suspect that's going to be a "challenge." What should I try next? Or, since my goal is to ultimately run the four modules together, should I just RMA all of it and buy something else?
The answer was, "Just fine." I installed the two modules into the yellow sockets (1 & 2), set the settings to the ones suggested in the sticky thread in this forum related to this combo and let it rip overnight running Memtest86+. The next morning, 15 passes of Memtest and no errors.
Based on this experience, I ordered another pair of the same modules to expand the system to 8 GB. When the 2nd pair arrived, I decided to test it. I pulled out the original pair, inserted the 2nd pair in the yellow sockets and fired up Memtest+. It would run until test 5 and then crash the system (it would reboot). I pulled the module from slot 2 and ran Memtest with just the one module. It ran until test 5 and then hung the system (no reboot, Memtest just hung). I pulled out that one module and replaced it with the 2nd "new" module. Same deal, Memtest hung at test 5.
Confirming there was an "issue," booting to Win XP produced a BSOD almost immediately with the 2nd set of modules. With the "original" set, Win XP ran without a problem.
I put the "original" pair of modules back in the yellow sockets, ran Memtest+ and again, no errors at all.
Based on this, I contacted Newegg and RMA'd the 2nd set of modules. Today, I got another pair as the replacements. I again removed the "original" pair of modules, stuck in the "new" set into the yellow sockets and ran Memtest+. Everything is fine until test 5 where I start to get thousands of errors. Pulled out the module from slot 2 and ran just one with Memtest+ and got errors (lots) in test 5. Swapped the other "new" module into slot 1 and ran it alone: same result - lots of errors in test 5.
I put back the "original" pair of modules into slots 1 & 2 and, once again, no errors at all with Memtest+.
In all cases, I used the suggested timings and memory voltage from the sticky thread. I tried bumping up the north bridge voltage, but it made no apparent difference.
Note that I haven't even tried running all four modules at the same time to get to 8 GB (with 64-bit Ubuntu). I'm beginning to suspect that's going to be a "challenge." What should I try next? Or, since my goal is to ultimately run the four modules together, should I just RMA all of it and buy something else?
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