Hello! I was just thinking about adding another GB of ram to my 32bit system. Currently I have 2GB in dual channel mode, and have a 1gb 4870 video card. Adding one more gigabyte of ram should be usable, correct? (2^32=4gb less the hdd cache which is 32mb) At newegg.ca they sell the exact same brand and timing ram (GSkill DDR2 1066 5-5-5-15) in 2gb (2x1gb)--which is what I currently have--and 1gb sticks. So I am considering buying one more stick. I am quite aware that most motherboards with 3 sticks will enter single channel mode, but mine the Gigabyte GA-EP45-UD3L has the P45 chipset, and if you see here: http://www.intel.com/support/motherboards/desktop/sb/cs-011965.htm#flex Triple channel memory can be run despite the dimms being 0 to 3 not 0 to 5. I at this point assume I can run this mode as my mobo again has the p45 chipset and if you look at the "supported" intel motherboards you can see some with the p45, and p43 chipsets at the bottom i.e the DP45SG. What do you think I should do? Did I misunderstand? By the way my Windows 7 installation again is 32-bit so I am limited. And 4x1gb sticks sounds fine, but i`ll end up wasting $30 completely because by the time i purchase a 64bit os I will replace all my hardware anyways. All opinions Welcome! Thanks!