Originally Posted by heng8866
I found it is really hard to get a RAM frequency higher than 1600MHZ on an AM3 platform, while at the same time, 955BE is multiplier unclockable. My suggestion is use a ratio of 1:4 and set the FSB to 200, which can give you a RAM speed of 1600MHZ, then adjust the multiplier to reach your ideal speed.
To me, I think 1600MHZ 8-8-8-20 at 1.65v is the best setup. Do not use a high voltage during daily computing.
I can add that yes, getting RAM beyond 1600MHz isn't easy and for most situations, setting the ratio at 1:4 would give you the best overall RAM speed. If using your FSB as part of your tweaking, drop your divider down to the next available ratio for stability since when you increase your bus speed, your RAM speed will naturally rise too.
I have discovered with my RAM that 1.9v's isn't needed unless going for alot of RAM speed. My set will run 1600MHz easily (1:4 @ 200MHZ FSB ) at 1.65v's even though they are rated for 1.9v's.
In reality, unless you have active cooling present for your RAM such as using a RAM cooler or have a fan inside the case for this purpose, 1.75 - 1.8v's is enough for most anything you'll be doing except going for really high RAM speeds.
I've had these sticks at 828MHz shown in CPU-Z with some fairly tight timings BUT had some volts going to them when I did it - Definitely more than 1.9v's.