Hi guys,
once it is not usual, but I'm not coming upon this forum for overclocking purpose, at least not now, but instead for a technical advice regarding the corsair's memory I use. I believe an overclocking forum may be the most accurate place to retrieve relevant information on this.
Before I forget about, my main config part are:
Gigabyte P55A-UD4 (rev 2.0) - latest released bios F15
Intel i7-860 (LGA 1156)
Noctua NH-C12P - SE14
Corsair memory (see hereafter).
W7 64bits
I started last year with 2x2Gb XMS3 PC3-16000 memory kit (CMX4GX3M2A2000C9). Hereafter a direct link to the Corsair's technical sheet of this module. http://www.corsair.com/memory-by-product-family/xms-classic/cmx4gx3m2a2000c9.html
At that time I went father for the first time, so I simply setted up the PC with most default bios setting except a few ones regarding RAID config for my storage HDD and some other I don't exactly remember.
Everything seemed fine, RAM running at 2GHz, no reason to be suspicious.
With time going, my daughter letting me some more time I started over again working with the comp. Noticing the ram getting full through my usage, I looked into upgrading with another 2x2Gb XMS3 PC3-16000 memory kit (CMX4GX3M2A2000C9).
Since I couldn't easily find some at my usual retailers or web stores, I finally went for 2x4Gb XMS3 PC3-16000 memory kit (CMX8GX3M2A2000C9). Hereafter a direct link to the Corsair's technical sheet of this module. http://www.corsair.com/memory-by-product-family/xms-classic/cmx8gx3m2a2000c9.html
After experiencing some issues when installing the new modules I managed to have all four banks working together but at 1600 MHz. No way to hit 2GHz as specified. Both kits are said PC3-16000 !!!
Getting worried, I decided to run memtest to insure RAM wasn't damaged. What a surprise:
- the 2x2GB kit is seemingly not PC3-16000 but PC3-10600 instead
- the 2x4GB kit is seemingly not PC3-16000 but PC3-8500 instead
I ran back into windows, and double checked with CPU-Z which gives me the same kind of result. See here: https://plus.google.com/photos/1031...s/5687181750262165633?authkey=CLKnqezjidXLvQE
In the end it's no wonder I have issues trying to run both module together, there are on different base clock, not PC3-16000 at all, none of them !!!!
Simply because they where tested at 2GHz, they sell it as PC3-16000.
May I have your opinion on this before getting toward corsair to ask about this. Is it a common known situation I simply ran into due to lack of knowledge or is it also surprising for you guys. I now have two set of incompatible RAMs except if I downclock them to 1600 MHz. While it's not a major issue itself, I ordered PC3-16000 RAM modules and end up with far cheaper modules.
once it is not usual, but I'm not coming upon this forum for overclocking purpose, at least not now, but instead for a technical advice regarding the corsair's memory I use. I believe an overclocking forum may be the most accurate place to retrieve relevant information on this.
Before I forget about, my main config part are:
Gigabyte P55A-UD4 (rev 2.0) - latest released bios F15
Intel i7-860 (LGA 1156)
Noctua NH-C12P - SE14
Corsair memory (see hereafter).
W7 64bits
I started last year with 2x2Gb XMS3 PC3-16000 memory kit (CMX4GX3M2A2000C9). Hereafter a direct link to the Corsair's technical sheet of this module. http://www.corsair.com/memory-by-product-family/xms-classic/cmx4gx3m2a2000c9.html
At that time I went father for the first time, so I simply setted up the PC with most default bios setting except a few ones regarding RAID config for my storage HDD and some other I don't exactly remember.
Everything seemed fine, RAM running at 2GHz, no reason to be suspicious.
With time going, my daughter letting me some more time I started over again working with the comp. Noticing the ram getting full through my usage, I looked into upgrading with another 2x2Gb XMS3 PC3-16000 memory kit (CMX4GX3M2A2000C9).
Since I couldn't easily find some at my usual retailers or web stores, I finally went for 2x4Gb XMS3 PC3-16000 memory kit (CMX8GX3M2A2000C9). Hereafter a direct link to the Corsair's technical sheet of this module. http://www.corsair.com/memory-by-product-family/xms-classic/cmx8gx3m2a2000c9.html
After experiencing some issues when installing the new modules I managed to have all four banks working together but at 1600 MHz. No way to hit 2GHz as specified. Both kits are said PC3-16000 !!!
Getting worried, I decided to run memtest to insure RAM wasn't damaged. What a surprise:
- the 2x2GB kit is seemingly not PC3-16000 but PC3-10600 instead
- the 2x4GB kit is seemingly not PC3-16000 but PC3-8500 instead
I ran back into windows, and double checked with CPU-Z which gives me the same kind of result. See here: https://plus.google.com/photos/1031...s/5687181750262165633?authkey=CLKnqezjidXLvQE
In the end it's no wonder I have issues trying to run both module together, there are on different base clock, not PC3-16000 at all, none of them !!!!
Simply because they where tested at 2GHz, they sell it as PC3-16000.
May I have your opinion on this before getting toward corsair to ask about this. Is it a common known situation I simply ran into due to lack of knowledge or is it also surprising for you guys. I now have two set of incompatible RAMs except if I downclock them to 1600 MHz. While it's not a major issue itself, I ordered PC3-16000 RAM modules and end up with far cheaper modules.