Late to the party, but... Part of the problem is that there are very few, if any SO-DIMM 1GB+ DDR memories. I never did see one, and people claim they exist, but cant link to one.
For about $30 you can upgrade older AMD AM2 systems with 4 DIMM slots to 16GB, cheaper than any DDR2/DDR3/DDR4 memory upgrade out there. I know someone that was rocking an old Athlon X2 6000+ (3.0ghz) up until late last year. Recently he got a used Phenom II X4 for it for ~$50. He's only put about $400-500 into most of the parts in his PC, and he's had it for over 6 years now. He does buy new videocards occasionally, so probably $500 or so spent there. But still, under $1000 for over ~6 years of usage, and a PC that still plays modern games mostly okay? He did a crazy good job cheaping out. Even has a 256GB SSD in it.
In any case 1GB RAM should be more than enough for using the NV+ (v1). If it's not then you probably are affected by other bottlenecks e.g. CPU performance as well, and would benefit from moving to using a new ReadyNAS.
