There are also ICs like Elpida BCSE, these are older and did not too bad, I had these on 1600 7-7-7 rated 2x2gb single sided kits and they did around 2000 8-9-7 and up to 2400 10-10-10. But I assume your new psc do not have this quality, and I am not sure which Elpida IC might have been their inspiration