Will
http://www.aliexpress.com/store/product/1066Mzh-4GB-DDR3-PC3-8500-KVR1333D3N9-4G-Memory-Ram-Memoria-for-Desktop-PC-Free-Shipping-Lifetime/1807239_32352023803.html (KVR1066D3N7/4G) work on a ASRock G41C-GS, Intel Core 2 Quad Q9550, WIn 7 64bit.
Currently i have 4Gb DDR2 333Mhz ram
http://www.aliexpress.com/store/product/1066Mzh-4GB-DDR3-PC3-8500-KVR1333D3N9-4G-Memory-Ram-Memoria-for-Desktop-PC-Free-Shipping-Lifetime/1807239_32352023803.html (KVR1066D3N7/4G) work on a ASRock G41C-GS, Intel Core 2 Quad Q9550, WIn 7 64bit.
Currently i have 4Gb DDR2 333Mhz ram