I assume you mean mid-2010?
NCIX has pretty good prices on RAM. For that computer the Corsair is probably the better bang for you buck at $38 for 8GB:
http://www.ncix.ca/products/?sku=614...acture=Corsair
Kingston is another option but it's $10 more:
http://www.ncix.ca/products/?sku=527...ston%20Branded