G.Skill 2x2GB PC2 8800 (F2-8800CL5D-4GBPI)
 

To sum things up, the F2-8800CL5D-4GBPI is a good kit as long as you
don't expect too much above stock speeds. However, with attractive
heatspreaders and even more attractive prices of DDR2, this is a great kit
to add 4 gigabytes of memory for very little dough.

http://www.overclockersonline.net/?p...icles&num=1981