Memory won't run triple channel

Microsoft Windows xp professional w/serv...
May 16, 2010 at 13:13:06
Specs: Windows 7, i7 930/6GB DDR3
I built a new computer the other day. I bought 6 GB of triple channel OCZ memory 3-2GB sticks). It would only run in duel channel mode. Windows and CPU-Z shows 6GB of memory and under CPU-Z it showed duel channel and it displayed a slightly different part number than what was on the sticker on the sticks of RAM. Also CPU-Z said the maximum bandwidth was PC3-8500 and it clearly says PC3-12800 on the sticker. I returned the OCZ and bought a triple channel set of Crucial memory PC3-12800 6GB kit and this memory is listed as PC3-10700H (667Mhz). Crucial is showing duel channel also not triple channel. All of my drivers are up to date and I have tried moving around sticks of memory and all of the memory are in DIMM slots 1, 3, 5 as stated in the motherboard manual (Gigabyte GA-X58A-UD3R). I am using the latest version of CPU-Z and have tried other benchmarking programs and they say the same thing. Could it be the motherboard? Any suggestions...Thanks

See More: Memory wont run triple channel

Report •


#1
May 16, 2010 at 16:49:43
The RAM detection has nothing to do with drivers. It has to do with the RAM itself, the placement of the RAM in the slots, & the BIOS settings for the RAM. This is not a software problem, it's a hardware problem. Are you manually configuring the BIOS settings? You are using the 3 WHITE slots, right?

http://www.ninjalane.com/reviews/mo...

http://www.gigabyte.us/FileList/Mem...


Report •

#2
May 16, 2010 at 18:22:33
Yes, I am using slots 1,3, and 5, which are the white slots. I have adjusted the Bios settings. One thing I thought was odd was under memory timings it has >>>channel A, B and C. Under B and C it had the the memory timings listed in the column on the left and Auto in the brackets on the right but under channel A it had lines or dashes on the left column and Auto in the brackets on the right. I have tried changing the bios settings and rebooting and running CPU-Z but it always says Duel channel and the max bandwidth shows up in cpu-z as like PC3-10,700 instead of the PC3-12800 thats listed on the memory. Thanks for the reply, I feeling sick thinking about haveing to pull the mobo and return it. Any help is appreciated...

Report •

#3
May 17, 2010 at 07:43:06
Sounds like you're running the RAM at 667MHz frequency rather than 800MHz. Do NOT rely on auto settings. Manually enter the RAM frequency, the timings & the voltage.

Report •

Related Solutions

#4
May 17, 2010 at 19:38:07
Turned out to be a defective motherboard. Owners manual says if using one stick of memory to use slot 1 or 3, so I took out all of the memory and used one 2GB stick to boot from slot 1. System did not boot. Moved stick to slot 3, system booted up, even tried slot 5 and it booted. I also tried the other two sticks of ram in slot 1 with no boot up. That and channel A in the bios had dashes instead of the memory timeings like channel B and C have led me to return the motherboard and exchange for a new one. Just put it back together and I am now running Triple Channel. (high five) Thanks for the replies.

Report •

Ask Question