I've got an Asus P7P55D LE motherboard with 4GB ram, divided in 2x 2GB which are currently in slots #1 and #3. I want to add 8GB (i.e. 2x 4GB) and I know it's usually best have matching pairs of ram.
Now if the existing two 2GB dimms would have been in slot #1 and #2. I would have placed the new 4GB dimms in #3 and #4 without any doubt.
But since they're in slot #1 and #3 (installed this way by the guy who originally built the PC at the shop, and they seem to know what they're doing) I am wondering, how does this pairing work? Should the dimms in slot #1 and #3 be equal, and likewise #2 and #4? Or should #1 and #2 be equal, and likewise #3 and #4 ?
Now if the existing two 2GB dimms would have been in slot #1 and #2. I would have placed the new 4GB dimms in #3 and #4 without any doubt.
But since they're in slot #1 and #3 (installed this way by the guy who originally built the PC at the shop, and they seem to know what they're doing) I am wondering, how does this pairing work? Should the dimms in slot #1 and #3 be equal, and likewise #2 and #4? Or should #1 and #2 be equal, and likewise #3 and #4 ?