Guys, please enlighten me please, really noob in this. Whoever can't understand what i'm saying please don't flame me.

1. The high-performance 1Gb DDR2 677 ram is selling at RM390,
written ram come in pairs, pairs means 2 sticks of 1Gb ram or 2 sticks of 512Mb Ram?

3. 1 stick of 1Gb DDR2 Ram on mobo = 1Gb
2 sticks of 1Gb DDR2 Ram are actually 1Gb or 2GB on board?

Guys, thx for the replies, 1 more question k.

For DDR2,

2 sticks of 1 gb value ram better or,

2 sticks of 512mb high perfomance ram better?