The AMD Sempron 145 CPU (2800MHz Single Core, Sargas 45nm) supports up to:
AM3 (Official)
2x8GB DDR3 1333 (1600 (O.C.), unofficial)
2x8GB DDR3 1066 ECC
AM2+
2x8GB DDR2 1066
2x8GB DDR2 800 ECC
In layman terms, two sticks of 8GB RAM, DDR3 at up to 1333 MHz (PC3-10600)/
1066 MHz (PC3-8500) ECC
for AM3
two sticks of 8GB DDR2
at 1066 MHz (PC2-8500)/
800 MHz (PC2-6400) ECC
for AM2+
And you can unlock a second core for some AM3 760G motherboards
Sad to see how people forget the old-gear we had last time...