Because it is very difficult to fake ddr2 memory, ddr3 doesn't make money at all because of its low cost, so even Kingston, where fakes were very popular before, has no fakes now.

There is no difference between memory quality and price. Everyone is the same particle, the only difference is the spd setting. Ordinary-priced memory can't be overclocked by the pirate ship Qi Zhi or Kingston Wei Gang, while the high-end overclocked memory and pirate ship are of course of good quality, but Kingston Hacker Bar still keeps the overclocking record.