Is 1gb ddr2 good

Well I have had several other computers and laptops before. My new Emachines computer that I purchased this week had 1GB DDR2 in it and it has beaten all my other computers and laptops in speed. So I'm guessing it's all thanks to the 1GB DDR2. Well I have had several other computers and laptops before. My new Emachines computer that I purchased this week had 1GB DDR2 in it and it has beaten all my other computers and laptops in speed. So I'm guessing it's all thanks to the 1GB DDR2.