I'd like to upgrade my ancient Super Micro SuperServer 6024H-i with a little more memory. Its motherboard manual specifies support for DDR-233/300 memory only. However, it is equipped with an Intel E7520 Lindenhurst chipset, which specifies additional support for DDR2-400 memory.
Obviously, I'd hate to miss out on better performance if I can get it, but it seems unwise to ignore the manual. Which specification should I go by?