"Mushkin's slogan is "Get More". Did I? Why, yes, yes I did. At stock speeds, the Mushkin modules consistently performed almost identically the same as most of the 2x1GB sets. This, while running looser latencies to do it. Most of the 2x1GB kits are able to reduce the latencies to 6-5-5-16 at 1333MHz, but I was unable to make this happen on the HP3 10666 2x2GB set. But in reality, the addition of two gigabytes of additional system memory makes this a non-issue for day-to-day use. 'Feel' is something that is hard to explain, but most of you know just what I am talking about. Programs respond that little bit quicker, games load just that little bit faster, all things that you can feel but are not easily measured. Adding more system memory does this for you. If you run Vista, many of you know the amount of resources that are eaten up by all the background services. Running with just two gigabytes, means that eventually the requested memory is going to have to be paged out to the swap file and this of course takes longer to respond than having the physical memory available."