I currently have 6gb of the following memory in triple channel on my X58A-UD3R Motherboard. Corsair XMS3 6GB (3x2048MB) DDR3 1333MHz 240pin DIMM Memory Module Kit CMX6GX3M3A1333C9 I am looking to add another 6GB, to take it to a total of 12GB. Now, I looked at the pricing of my RAM and it is £38 for another 6GB. However, I have heard that filling all 6 lanes with memory on a triple channel board can cause Overclocks to become unstable. Anyone heard of this?
Well just today I added 6GB more to my system, and my overclock has remained stable. The only difference is that I have 1600MHz memory. Just remember to get the same voltage and timings memory. I built my PC over a year ago, and Corsair have released a new XMS3 range, so initially I was confused trying to find my old memory. Turns out they simply released new XMS3 sticks with exactly the same performance characteristics as the old ones.
Yes overclocks can be affected when all six DIMMs are populated. When I had all six DIMMs populated for 9GB total I needed to increase uncore voltage a little to keep the system stable. However it may not need it with 1333MHz as the bandwidth will be a lot lower.
Increasing any cpu-related voltage will increase temps, but not necessarily by a lot. As long as you have a decent cooler you don't need to worry about it.
