Well I asked. And I was told I can have two 8GB RAM cards. Or I have a choice to have a more expensive Motherboard that have 4 slots , kicking up the maximum RAM capacity to 32GB ... AM I insane for even considering this?
In my experience, the component that is most difficult to replace, upgrade, improve, or tinker with is the mobo. If I wanted to upgrade my mobo, I'd have to pretty much take the whole thing apart, pull out the mobo, install the new one and then re-seat everything on the new mobo (and probably get thermal gel in my hair for a week AGAIN). While the graphics card, CPU, and RAM tend to be the shiny parts that get a lot of attention, none of them work very well if the mobo isn't designed to handle them. So, personally, before I bought a graphics card that cost more than all the other components put together, I'd allocate money toward buying the nicest mobo I could afford, followed by RAM, CPU, and graphics - possibly in that order of importance, at least marginally. Not because RAM is the most crucial component, necessarily, but because it tends to be more annoying to expand your RAM than just buying a new stick and popping it in. Better to start with at least middle-of-the-road RAM rather than going with minimal RAM and then running into problems later (as others have mentioned).
If it's a gaming rig, I assume it's going to be Windows. In my opinion with Windows, you want at least, at minimum, at barebones, 8 gigs of RAM. I work all day with people whose computers are trying to run Windows on lower amounts of RAM and lower CPU speeds - it's really just not pretty. (Especially with Windows 8. I have developed an abiding and possibly unreasonable loathing for Windows 8 and hate working with customers who have it on their system.) Plus, I don't understand why you're skimping on part of the memory if you want everything to run perfectly. Maybe you have some reasoning that I missed. >.>
I'm not an IT gal and I don't play one on TV but that's what I've picked up from my experiences.