I have to upgrade the RAM on 8 different desktop PCs - each of them with varying specs, different ages, different manufacturers, different motherboards, etc. I'm pretty sure they don't all use the same type of RAM.
I've been doing some Googling, and just can't wrap my head around how to determine what type of RAM I will need. I think the main issue is that I don't understand what the different types of RAM are (DDR, DDR2, DDD3, PC400, PC3200), the different speeds, the different physcial sizes (160 pin, 184pin, etc), SIMM, DIMM, DRAM, SDRAM, dual channel, single channel, etc. If you consider the many different permutations that the above can result in, you will understand my predicament.
Is there are good website/online resource that explains modern RAM (ONLY the last 5 years), without explaining all the way back to the 1990s, 1980s or even earlier.
Is there are free tool that I can download to help me determine what type of RAM I need to purchase?
Is there any other advice/suggestions that could be useful/helpful for me to get past this problem.