OK, guys, thanks for the info. It was very helpful. Rharv, yes, you're right -- my Corsair memory sticks are obviously meant to be installed as a pair. A big reason why I was thinking about getting another identical pair, which would push my system memory up to 16GB, which is where I think it needs to be. My motherboard, an ASRock 890GX Pro3, will handle up to 32GB. I would like to go ahead and install the max, but I've got the necessary funds to do this earmarked for other things.

Jim, thanks for the links. Your second link leads to a screen where Crucial shows their selections with prices. Surprisingly, their prices are some of the cheapest I've seen, especially for new RAM. I visited Corsair's website, and their prices are significantly higher, although the eBay sellers of Corsair RAM have their prices adjusted more toward real street prices.

As a follow-up to this, one of the problems I'm having with my system (Win7 64 bit, although lately I've been running BiaB 32 bit) is pops and crackles and hesitations. I have to have just about everything else put away, and I'll even call up Windows Task Manager and stop several applications which load themselves on system start up. I have to do this to ensure a clean sounding playback in both BiaB and Cakewalk by Bandlab (formerly Sonar Platinum). I'm hoping that by doubling the system RAM I won't have to be quite so rigid in trimming things down so the music stuff will run right. One reason for this is that, now that I have a digital mixer (Behringer XR12), I also now have a big mixer screen that must be present to operate the mixer -- while either BiaB or Cakewalk are running. Fact is, I'd like to be able to have both BiaB and Cakewalk up at the same time, but I usually can't do this. I'm hoping 16GB will be enough extra memory so I can make it happen.